./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 32bit --witnessprinter.graph.data.programhash 373a42d768821561cf3a59e950efa4caf2842fe4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:15:10,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:15:10,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:15:10,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:15:10,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:15:10,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:15:10,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:15:10,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:15:10,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:15:10,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:15:10,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:15:10,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:15:10,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:15:10,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:15:10,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:15:10,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:15:10,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:15:10,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:15:10,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:15:10,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:15:10,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:15:10,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:15:10,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:15:10,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:15:10,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:15:10,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:15:10,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:15:10,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:15:10,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:15:10,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:15:10,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:15:10,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:15:10,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:15:10,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:15:10,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:15:10,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:15:10,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:15:10,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:15:10,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:15:10,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:15:10,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:15:10,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 10:15:10,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:15:10,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:15:10,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:15:10,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:15:10,141 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:15:10,141 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 10:15:10,141 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 10:15:10,141 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 10:15:10,142 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 10:15:10,142 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 10:15:10,142 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 10:15:10,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:15:10,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:15:10,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:15:10,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:15:10,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:15:10,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:15:10,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 10:15:10,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 10:15:10,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 10:15:10,144 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:15:10,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:15:10,145 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 10:15:10,145 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:15:10,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 10:15:10,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:15:10,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:15:10,146 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 10:15:10,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:15:10,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:15:10,146 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 10:15:10,147 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 10:15:10,147 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 373a42d768821561cf3a59e950efa4caf2842fe4 [2019-11-20 10:15:10,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:15:10,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:15:10,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:15:10,383 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:15:10,384 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:15:10,384 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_02-1.c [2019-11-20 10:15:10,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/data/e57dac17f/d3dcc66f6b1147ed975b0d43011756e6/FLAGc52d00332 [2019-11-20 10:15:10,903 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:15:10,904 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/sv-benchmarks/c/loops/terminator_02-1.c [2019-11-20 10:15:10,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/data/e57dac17f/d3dcc66f6b1147ed975b0d43011756e6/FLAGc52d00332 [2019-11-20 10:15:11,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/data/e57dac17f/d3dcc66f6b1147ed975b0d43011756e6 [2019-11-20 10:15:11,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:15:11,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:15:11,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:15:11,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:15:11,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:15:11,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a990b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11, skipping insertion in model container [2019-11-20 10:15:11,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,293 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:15:11,313 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:15:11,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:15:11,476 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:15:11,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:15:11,627 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:15:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11 WrapperNode [2019-11-20 10:15:11,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:15:11,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:15:11,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:15:11,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:15:11,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:15:11,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:15:11,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:15:11,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:15:11,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... [2019-11-20 10:15:11,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:15:11,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:15:11,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:15:11,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:15:11,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 [2019-11-20 10:15:11,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:15:11,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:15:11,957 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:15:11,958 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 10:15:11,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:15:11 BoogieIcfgContainer [2019-11-20 10:15:11,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:15:11,960 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 10:15:11,960 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 10:15:11,964 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 10:15:11,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:15:11,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:15:11" (1/3) ... [2019-11-20 10:15:11,967 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62b73ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:15:11, skipping insertion in model container [2019-11-20 10:15:11,967 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:15:11,967 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:15:11" (2/3) ... [2019-11-20 10:15:11,968 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62b73ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:15:11, skipping insertion in model container [2019-11-20 10:15:11,968 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:15:11,968 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:15:11" (3/3) ... [2019-11-20 10:15:11,970 INFO L371 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2019-11-20 10:15:12,044 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 10:15:12,044 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 10:15:12,044 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 10:15:12,045 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:15:12,045 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:15:12,045 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 10:15:12,045 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:15:12,046 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 10:15:12,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 10:15:12,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:12,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:15:12,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:15:12,100 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:15:12,101 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:15:12,101 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 10:15:12,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 10:15:12,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:12,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:15:12,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:15:12,103 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:15:12,104 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:15:12,112 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2019-11-20 10:15:12,113 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L21true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 10#L21-2true [2019-11-20 10:15:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 10:15:12,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:12,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655580557] [2019-11-20 10:15:12,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,241 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-20 10:15:12,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:12,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450678785] [2019-11-20 10:15:12,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,266 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-20 10:15:12,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:12,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911397548] [2019-11-20 10:15:12,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:12,287 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:12,374 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:12,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:12,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:12,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:12,375 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:15:12,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:12,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:12,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:12,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-20 10:15:12,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:12,377 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:12,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,654 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:12,655 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:12,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:12,664 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:12,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:12,677 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 [2019-11-20 10:15:12,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:12,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:15:12,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:12,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Honda state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 [2019-11-20 10:15:12,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:12,717 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 [2019-11-20 10:15:12,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:15:12,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:15:12,750 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:15:12,752 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:12,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:12,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:12,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:12,752 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:15:12,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:12,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:12,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:12,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-20 10:15:12,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:12,753 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:12,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:12,915 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:12,920 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:12,935 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 [2019-11-20 10:15:12,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:12,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:12,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:12,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:12,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:12,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:12,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:12,945 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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 [2019-11-20 10:15:12,968 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 [2019-11-20 10:15:12,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:12,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:12,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:12,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:12,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:12,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:12,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:15:12,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:15:12,985 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:15:12,985 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:15:13,001 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:15:13,001 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:15:13,001 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:15:13,002 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-20 10:15:13,008 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:13,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:13,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:13,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:13,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:13,110 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 [2019-11-20 10:15:13,111 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-20 10:15:13,181 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 8 states. [2019-11-20 10:15:13,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:15:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-20 10:15:13,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 10:15:13,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 10:15:13,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 10:15:13,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-20 10:15:13,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:13,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2019-11-20 10:15:13,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 10:15:13,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 10:15:13,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-20 10:15:13,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:15:13,210 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 10:15:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-20 10:15:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 10:15:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 10:15:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-20 10:15:13,243 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 10:15:13,244 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 10:15:13,244 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 10:15:13,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-20 10:15:13,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:13,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:15:13,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:15:13,245 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 10:15:13,245 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:15:13,246 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2019-11-20 10:15:13,246 INFO L796 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 88#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 83#L21-2 [2019-11-20 10:15:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,247 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-20 10:15:13,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998699651] [2019-11-20 10:15:13,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,282 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-20 10:15:13,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990584997] [2019-11-20 10:15:13,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,293 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-20 10:15:13,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811852185] [2019-11-20 10:15:13,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,312 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,336 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:13,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:13,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:13,337 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:13,337 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:15:13,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:13,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:13,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-20 10:15:13,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:13,338 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:13,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,457 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:13,457 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:13,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:13,462 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:13,479 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Honda state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:13,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:13,496 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:13,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:15:13,517 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,530 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:15:13,533 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:13,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:13,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:13,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:13,534 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:15:13,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:13,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:13,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-20 10:15:13,534 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:13,535 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:13,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:13,651 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:13,671 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 [2019-11-20 10:15:13,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:13,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:13,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:13,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:13,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:13,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:13,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,681 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:15:13,684 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:15:13,684 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:13,699 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:15:13,699 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:15:13,700 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:15:13,700 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-20 10:15:13,713 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:13,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:13,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:13,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:13,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:13,783 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 [2019-11-20 10:15:13,783 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 10:15:13,806 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. [2019-11-20 10:15:13,807 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 [2019-11-20 10:15:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 10:15:13,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 10:15:13,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 10:15:13,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-20 10:15:13,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:13,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-20 10:15:13,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:13,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-20 10:15:13,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 10:15:13,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 10:15:13,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-20 10:15:13,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:15:13,813 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 10:15:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-20 10:15:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 10:15:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 10:15:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-20 10:15:13,815 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 10:15:13,815 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 10:15:13,815 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 10:15:13,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-20 10:15:13,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 10:15:13,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:15:13,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:15:13,817 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 10:15:13,820 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:15:13,820 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2019-11-20 10:15:13,820 INFO L796 eck$LassoCheckResult]: Loop: 142#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 143#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L21-2 [2019-11-20 10:15:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-20 10:15:13,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467248708] [2019-11-20 10:15:13,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,882 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-20 10:15:13,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202752119] [2019-11-20 10:15:13,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,899 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:13,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-20 10:15:13,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:13,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749194929] [2019-11-20 10:15:13,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:13,949 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:13,978 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:13,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:13,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:13,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:13,979 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:15:13,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:13,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:13,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:13,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-20 10:15:13,980 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:13,980 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:13,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:13,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,093 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:14,094 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,099 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:15:14,125 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:15:14,137 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:14,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:14,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:14,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:14,138 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:15:14,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:14,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:14,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-20 10:15:14,139 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:14,139 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:14,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,266 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:14,267 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,283 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 [2019-11-20 10:15:14,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:14,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:14,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:14,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:14,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:14,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:14,287 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,290 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:15:14,293 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:15:14,294 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,307 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:15:14,307 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:15:14,308 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:15:14,308 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-20 10:15:14,310 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:14,373 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 [2019-11-20 10:15:14,373 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 10:15:14,389 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. [2019-11-20 10:15:14,390 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 [2019-11-20 10:15:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 10:15:14,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 10:15:14,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:14,391 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:15:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:14,438 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 [2019-11-20 10:15:14,439 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 10:15:14,453 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. [2019-11-20 10:15:14,453 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 [2019-11-20 10:15:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 10:15:14,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 10:15:14,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:14,454 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:15:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:14,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:14,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:14,507 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 [2019-11-20 10:15:14,507 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 10:15:14,525 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. [2019-11-20 10:15:14,527 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 [2019-11-20 10:15:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 10:15:14,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 10:15:14,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:14,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-20 10:15:14,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:14,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 10:15:14,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:14,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-20 10:15:14,531 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 10:15:14,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-20 10:15:14,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 10:15:14,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 10:15:14,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-20 10:15:14,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:15:14,533 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 10:15:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-20 10:15:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-20 10:15:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 10:15:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-20 10:15:14,537 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 10:15:14,537 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 10:15:14,537 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 10:15:14,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-20 10:15:14,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 10:15:14,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:15:14,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:15:14,539 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:15:14,540 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:15:14,541 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2019-11-20 10:15:14,541 INFO L796 eck$LassoCheckResult]: Loop: 284#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 283#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 284#L21-2 [2019-11-20 10:15:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-20 10:15:14,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:14,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932373975] [2019-11-20 10:15:14,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,552 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-20 10:15:14,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:14,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822893668] [2019-11-20 10:15:14,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,575 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-20 10:15:14,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:15:14,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215200848] [2019-11-20 10:15:14,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:15:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:15:14,596 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:15:14,634 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:14,635 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:14,635 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:14,635 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:14,635 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:15:14,635 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:14,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:14,636 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-20 10:15:14,636 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:14,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:14,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:14,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:14,787 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:14,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,811 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:14,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,847 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:14,892 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,934 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:15:14,948 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:15:14,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=99} Honda state: {ULTIMATE.start_main_~x~0=99} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 4, 13] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:15:14,975 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:14,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:15:14,986 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 [2019-11-20 10:15:14,995 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:15:14,997 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:15:14,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:15:14,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:15:14,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:15:14,998 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:15:14,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:14,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:15:14,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:15:14,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-20 10:15:14,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:15:14,999 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:15:15,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:15,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:15,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:15,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:15,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:15:15,127 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:15:15,127 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:15,139 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 [2019-11-20 10:15:15,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:15,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:15,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:15,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:15,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:15,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:15,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:15:15,144 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:15,151 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 [2019-11-20 10:15:15,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:15,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:15,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:15,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:15,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:15,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:15,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:15:15,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:15,166 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 [2019-11-20 10:15:15,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:15,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:15,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:15,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:15,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:15,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:15,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:15:15,185 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:15,198 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 [2019-11-20 10:15:15,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:15,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:15,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:15,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:15,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:15,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:15,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:15,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:15,213 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 [2019-11-20 10:15:15,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:15:15,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:15:15,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:15:15,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:15:15,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:15:15,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:15:15,219 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 [2019-11-20 10:15:15,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:15:15,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:15:15,228 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_1cfeed2c-335b-47e2-bce2-2f1da90887c0/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) [2019-11-20 10:15:15,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:15:15,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:15:15,233 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:15:15,233 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:15:15,238 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:15:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:15:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:15,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:15:15,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:15:15,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:15:15,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:15:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:15:15,282 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 [2019-11-20 10:15:15,282 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 10:15:15,297 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 4 states. [2019-11-20 10:15:15,299 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 [2019-11-20 10:15:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:15:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 10:15:15,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 10:15:15,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:15,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 10:15:15,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:15,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 10:15:15,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:15:15,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-20 10:15:15,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:15:15,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-20 10:15:15,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 10:15:15,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 10:15:15,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 10:15:15,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 10:15:15,302 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:15:15,302 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:15:15,302 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:15:15,302 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 10:15:15,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:15:15,303 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:15:15,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 10:15:15,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:15:15 BoogieIcfgContainer [2019-11-20 10:15:15,311 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 10:15:15,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:15:15,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:15:15,313 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:15:15,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:15:11" (3/4) ... [2019-11-20 10:15:15,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:15:15,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:15:15,319 INFO L168 Benchmark]: Toolchain (without parser) took 4044.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 232.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:15:15,320 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-20 10:15:15,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:15:15,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:15:15,324 INFO L168 Benchmark]: Boogie Preprocessor took 22.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:15:15,326 INFO L168 Benchmark]: RCFGBuilder took 264.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:15:15,328 INFO L168 Benchmark]: BuchiAutomizer took 3351.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.3 kB). Peak memory consumption was 62.9 MB. Max. memory is 11.5 GB. [2019-11-20 10:15:15,328 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:15:15,334 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 354.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 264.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3351.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.3 kB). Peak memory consumption was 62.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.49 ms. Allocated memory is still 1.3 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 199 and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div444 bol100 ite100 ukn100 eq150 hnf48 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...