./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 687269bb6882b72a3d48999f1e5c55a1d5283a94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:50:21,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:21,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:21,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:21,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:21,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:21,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:21,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:21,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:21,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:21,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:21,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:21,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:21,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:21,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:21,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:21,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:21,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:21,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:21,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:21,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:21,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:21,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:21,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:21,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:21,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:21,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:21,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:21,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:21,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:21,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:21,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:21,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:21,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:21,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:21,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:21,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:21,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:21,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:21,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:21,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:21,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:50:21,337 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:21,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:21,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:21,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:21,346 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:21,346 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:50:21,346 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:50:21,346 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:50:21,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:50:21,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:50:21,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:21,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:21,349 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:50:21,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:21,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:21,349 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:50:21,350 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:50:21,350 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_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2019-11-25 08:50:21,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:21,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:21,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:21,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:21,508 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:21,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-25 08:50:21,559 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/data/8369454e0/159b756364ef40d4867b1df9b9de8ade/FLAG543328a03 [2019-11-25 08:50:21,939 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:21,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-25 08:50:21,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/data/8369454e0/159b756364ef40d4867b1df9b9de8ade/FLAG543328a03 [2019-11-25 08:50:21,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/data/8369454e0/159b756364ef40d4867b1df9b9de8ade [2019-11-25 08:50:21,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:21,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:21,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:21,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:21,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:21,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:21" (1/1) ... [2019-11-25 08:50:21,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d79dae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:21, skipping insertion in model container [2019-11-25 08:50:21,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:21" (1/1) ... [2019-11-25 08:50:21,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:21,995 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:22,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:22,149 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:22,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:22,232 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:22,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22 WrapperNode [2019-11-25 08:50:22,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:22,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:22,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:22,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:22,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:22,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:22,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:22,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:22,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... [2019-11-25 08:50:22,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:22,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:22,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:22,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:22,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:22,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:22,497 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:50:22,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:22 BoogieIcfgContainer [2019-11-25 08:50:22,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:22,499 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:50:22,499 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:50:22,502 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:50:22,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:22,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:50:21" (1/3) ... [2019-11-25 08:50:22,504 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f5546f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:22, skipping insertion in model container [2019-11-25 08:50:22,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:22,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:22" (2/3) ... [2019-11-25 08:50:22,505 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f5546f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:22, skipping insertion in model container [2019-11-25 08:50:22,505 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:22,505 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:22" (3/3) ... [2019-11-25 08:50:22,506 INFO L371 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2019-11-25 08:50:22,549 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:50:22,549 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:50:22,549 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:50:22,549 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:22,549 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:22,549 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:50:22,550 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:22,550 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:50:22,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-25 08:50:22,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:22,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:22,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:22,610 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:22,610 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:22,610 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:50:22,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-25 08:50:22,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:22,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:22,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:22,612 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:22,612 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:22,619 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2019-11-25 08:50:22,620 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2019-11-25 08:50:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:50:22,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:22,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922351107] [2019-11-25 08:50:22,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,719 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:22,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2019-11-25 08:50:22,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:22,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047543485] [2019-11-25 08:50:22,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,734 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:22,736 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2019-11-25 08:50:22,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:22,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147686668] [2019-11-25 08:50:22,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:22,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:22,839 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:22,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:22,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:22,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:22,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:22,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:22,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:22,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:22,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-25 08:50:22,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:22,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:22,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:22,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:22,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:22,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,074 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-25 08:50:23,079 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:23,080 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:23,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:23,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:23,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:23,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:23,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:23,141 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,147 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:23,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:23,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:23,187 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:23,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:23,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:23,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:23,188 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:23,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:23,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:23,188 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-25 08:50:23,188 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:23,189 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:23,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,315 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:23,320 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:23,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:23,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:23,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:23,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:23,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:23,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:23,349 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) [2019-11-25 08:50:23,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:23,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:23,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:23,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:23,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:23,368 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:23,368 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:23,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:23,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:23,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:23,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:23,391 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:50:23,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:23,396 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:50:23,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:23,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:23,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:23,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:23,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:23,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:23,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:23,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:23,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:23,433 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:23,433 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:23,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:23,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:23,440 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:23,440 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:23,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:23,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:23,491 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:50:23,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:23,559 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:23,561 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-11-25 08:50:23,645 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2019-11-25 08:50:23,647 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 [2019-11-25 08:50:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-25 08:50:23,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:50:23,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:23,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:50:23,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:23,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-25 08:50:23,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:23,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-11-25 08:50:23,656 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-25 08:50:23,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2019-11-25 08:50:23,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-25 08:50:23,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-25 08:50:23,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-25 08:50:23,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:23,667 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-25 08:50:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-25 08:50:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-11-25 08:50:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:50:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-25 08:50:23,694 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-25 08:50:23,695 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-25 08:50:23,695 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:50:23,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-11-25 08:50:23,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-25 08:50:23,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:23,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:23,698 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:50:23,698 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:23,699 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-25 08:50:23,699 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-25 08:50:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:50:23,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:23,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899820480] [2019-11-25 08:50:23,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2019-11-25 08:50:23,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:23,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616256592] [2019-11-25 08:50:23,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:23,739 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2019-11-25 08:50:23,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:23,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139727235] [2019-11-25 08:50:23,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:23,753 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:23,784 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:23,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:23,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:23,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:23,785 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:23,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:23,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:23,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-25 08:50:23,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:23,785 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:23,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:23,891 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:23,891 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:23,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:23,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:23,907 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:23,916 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:23,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:23,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:24,045 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:24,047 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:24,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:24,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:24,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:24,048 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:24,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:24,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:24,049 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-25 08:50:24,049 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:24,049 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:24,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,153 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:24,153 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) [2019-11-25 08:50:24,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:24,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:24,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:24,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:24,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:24,175 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:24,175 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) [2019-11-25 08:50:24,198 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 [2019-11-25 08:50:24,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:24,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:24,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:24,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:24,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:24,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:24,203 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 [2019-11-25 08:50:24,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:24,210 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:50:24,210 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,222 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:24,222 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:24,222 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:24,223 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:24,225 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:24,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:24,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:24,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:24,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:24,276 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:50:24,277 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-11-25 08:50:24,314 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2019-11-25 08:50:24,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-25 08:50:24,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-25 08:50:24,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:50:24,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-25 08:50:24,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-11-25 08:50:24,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:24,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2019-11-25 08:50:24,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:50:24,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:50:24,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-25 08:50:24,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:24,320 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-25 08:50:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-25 08:50:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-25 08:50:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:50:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-11-25 08:50:24,326 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-25 08:50:24,326 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-25 08:50:24,326 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:50:24,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2019-11-25 08:50:24,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:24,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:24,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:24,329 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:50:24,329 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:24,332 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-25 08:50:24,333 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-25 08:50:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2019-11-25 08:50:24,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:24,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940392386] [2019-11-25 08:50:24,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2019-11-25 08:50:24,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:24,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119343137] [2019-11-25 08:50:24,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,369 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2019-11-25 08:50:24,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:24,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452777890] [2019-11-25 08:50:24,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:24,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:24,433 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:24,434 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:24,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:24,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:24,434 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:24,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:24,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:24,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-25 08:50:24,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:24,435 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:24,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:24,539 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:24,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:24,543 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 [2019-11-25 08:50:24,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:24,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:24,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:24,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:24,569 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) [2019-11-25 08:50:24,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:24,581 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:24,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:24,610 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,691 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:24,693 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:24,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:24,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:24,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:24,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:24,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:24,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:24,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-25 08:50:24,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:24,694 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:24,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:24,806 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:24,806 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:24,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:24,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:24,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:24,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:24,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:24,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:24,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:24,820 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:24,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:24,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:24,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:24,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:24,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:24,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:24,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:24,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:24,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:24,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:24,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:24,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:24,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:24,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:24,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:24,863 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:24,863 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:24,872 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:24,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:24,873 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:24,873 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:50:24,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:24,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:24,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:24,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:24,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:24,936 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:24,936 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-25 08:50:24,982 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2019-11-25 08:50:24,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:50:24,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-25 08:50:24,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-25 08:50:24,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2019-11-25 08:50:24,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:24,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-11-25 08:50:24,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:24,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2019-11-25 08:50:24,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-25 08:50:24,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-25 08:50:24,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2019-11-25 08:50:24,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:24,991 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2019-11-25 08:50:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2019-11-25 08:50:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-25 08:50:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:50:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2019-11-25 08:50:24,994 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-25 08:50:24,994 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-25 08:50:24,994 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:50:24,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2019-11-25 08:50:24,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:50:24,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:24,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:24,996 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-25 08:50:24,996 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:24,996 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-25 08:50:24,996 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-25 08:50:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2019-11-25 08:50:24,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:24,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531986456] [2019-11-25 08:50:24,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,007 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2019-11-25 08:50:25,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106315195] [2019-11-25 08:50:25,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,015 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2019-11-25 08:50:25,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170632289] [2019-11-25 08:50:25,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,068 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:25,068 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:25,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:25,069 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:25,069 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:25,069 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,069 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:25,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:25,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-25 08:50:25,069 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:25,069 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:25,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,167 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:25,167 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:25,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:25,200 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:25,201 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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 [2019-11-25 08:50:25,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:25,209 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:25,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:25,224 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,383 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:25,384 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:25,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:25,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:25,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:25,385 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:25,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:25,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:25,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-25 08:50:25,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:25,385 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:25,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,467 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:25,467 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:25,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:25,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:25,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:25,480 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:50:25,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:25,481 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:50:25,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:25,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,495 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:25,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:25,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:25,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:25,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:25,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:25,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:25,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:25,501 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:25,504 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:50:25,504 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,507 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:25,507 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:25,508 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:25,508 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:25,509 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,529 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:25,553 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:25,553 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-25 08:50:25,583 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2019-11-25 08:50:25,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-25 08:50:25,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-25 08:50:25,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:50:25,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-25 08:50:25,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2019-11-25 08:50:25,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-25 08:50:25,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2019-11-25 08:50:25,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-25 08:50:25,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-25 08:50:25,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2019-11-25 08:50:25,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:25,590 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-25 08:50:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2019-11-25 08:50:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2019-11-25 08:50:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-25 08:50:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2019-11-25 08:50:25,594 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-25 08:50:25,595 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-25 08:50:25,595 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:50:25,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2019-11-25 08:50:25,596 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-25 08:50:25,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:25,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:25,597 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:25,597 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:25,597 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-25 08:50:25,597 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-25 08:50:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2019-11-25 08:50:25,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695919378] [2019-11-25 08:50:25,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2019-11-25 08:50:25,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317196330] [2019-11-25 08:50:25,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2019-11-25 08:50:25,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648851491] [2019-11-25 08:50:25,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,635 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,673 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:25,673 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:25,673 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:25,673 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:25,673 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:25,673 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:25,673 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:25,673 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-25 08:50:25,673 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:25,673 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:25,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,739 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:25,740 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:25,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:25,748 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:25,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:25,769 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:25,772 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:25,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:25,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:25,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:25,772 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:25,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:25,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:25,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-25 08:50:25,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:25,773 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:25,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:25,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:25,849 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:25,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:25,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:25,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:25,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:25,855 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:25,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:25,858 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:25,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:25,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:25,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:25,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:25,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:25,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:25,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:25,867 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:25,868 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:50:25,869 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:25,872 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:25,872 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:25,872 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:25,872 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:25,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:25,909 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:50:25,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2019-11-25 08:50:25,932 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2019-11-25 08:50:25,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:50:25,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:50:25,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-25 08:50:25,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-25 08:50:25,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:25,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2019-11-25 08:50:25,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-25 08:50:25,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2019-11-25 08:50:25,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-25 08:50:25,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-11-25 08:50:25,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2019-11-25 08:50:25,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:25,940 INFO L688 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2019-11-25 08:50:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2019-11-25 08:50:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2019-11-25 08:50:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-25 08:50:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-11-25 08:50:25,946 INFO L711 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-25 08:50:25,946 INFO L591 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-25 08:50:25,946 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:50:25,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2019-11-25 08:50:25,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-25 08:50:25,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:25,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:25,948 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:25,949 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:25,949 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-25 08:50:25,949 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-25 08:50:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,949 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2019-11-25 08:50:25,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652711294] [2019-11-25 08:50:25,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,961 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2019-11-25 08:50:25,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864527496] [2019-11-25 08:50:25,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,967 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:25,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2019-11-25 08:50:25,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:25,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121556782] [2019-11-25 08:50:25,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:25,981 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:26,014 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:26,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:26,015 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:26,015 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:26,015 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:26,015 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,015 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:26,015 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:26,015 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-25 08:50:26,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:26,015 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:26,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,076 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:26,076 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:26,079 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:26,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:26,090 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,167 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:26,168 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:26,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:26,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:26,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:26,169 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:26,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:26,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:26,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-25 08:50:26,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:26,169 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:26,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,248 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:26,249 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:26,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:26,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:26,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:26,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:26,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:26,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:26,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:26,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:26,259 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:26,260 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:26,269 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:26,269 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:26,269 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:50:26,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,309 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:26,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-25 08:50:26,346 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2019-11-25 08:50:26,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:50:26,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:50:26,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:26,347 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,398 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:26,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-25 08:50:26,422 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2019-11-25 08:50:26,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:50:26,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:50:26,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:26,425 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:26,461 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:26,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-25 08:50:26,498 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2019-11-25 08:50:26,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-25 08:50:26,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:50:26,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:26,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:50:26,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:26,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-25 08:50:26,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:26,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2019-11-25 08:50:26,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2019-11-25 08:50:26,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2019-11-25 08:50:26,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-25 08:50:26,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-25 08:50:26,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2019-11-25 08:50:26,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:26,507 INFO L688 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2019-11-25 08:50:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2019-11-25 08:50:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2019-11-25 08:50:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-25 08:50:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2019-11-25 08:50:26,513 INFO L711 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-25 08:50:26,513 INFO L591 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-25 08:50:26,513 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:50:26,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2019-11-25 08:50:26,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-11-25 08:50:26,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:26,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:26,515 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-25 08:50:26,515 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:26,515 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-25 08:50:26,515 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-25 08:50:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2019-11-25 08:50:26,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680425667] [2019-11-25 08:50:26,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,524 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2019-11-25 08:50:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644521604] [2019-11-25 08:50:26,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,532 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2019-11-25 08:50:26,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:26,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20985427] [2019-11-25 08:50:26,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:26,545 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:26,615 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:26,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:26,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:26,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:26,615 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:26,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:26,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:26,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-25 08:50:26,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:26,616 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:26,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,705 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:26,706 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:26,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:26,722 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:26,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:26,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:26,732 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:26,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,741 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:26,741 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:26,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:26,745 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:26,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:26,756 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:26,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:26,768 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,924 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:26,925 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:26,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:26,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:26,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:26,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:26,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:26,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:26,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-25 08:50:26,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:26,926 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:26,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:26,992 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:26,992 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:26,995 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:26,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:26,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:26,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:26,996 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:50:26,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:26,998 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:50:26,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:27,000 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:27,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:27,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:27,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:27,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:27,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:27,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:27,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,020 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:27,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:27,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:27,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:27,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:27,028 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:27,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:27,032 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:27,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:27,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:27,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:27,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:27,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:27,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:27,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:27,042 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:27,045 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:27,045 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,049 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:27,050 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:27,050 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:27,050 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:27,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:27,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:27,118 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:50:27,118 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2019-11-25 08:50:27,212 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2019-11-25 08:50:27,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:50:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-25 08:50:27,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-25 08:50:27,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:27,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-25 08:50:27,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:27,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-25 08:50:27,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:27,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2019-11-25 08:50:27,221 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-25 08:50:27,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2019-11-25 08:50:27,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2019-11-25 08:50:27,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2019-11-25 08:50:27,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2019-11-25 08:50:27,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:27,223 INFO L688 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2019-11-25 08:50:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2019-11-25 08:50:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2019-11-25 08:50:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-11-25 08:50:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2019-11-25 08:50:27,234 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-25 08:50:27,234 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-25 08:50:27,234 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:50:27,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2019-11-25 08:50:27,236 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-25 08:50:27,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:27,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:27,237 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:27,237 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:27,237 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-25 08:50:27,237 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-25 08:50:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2019-11-25 08:50:27,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:27,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561216970] [2019-11-25 08:50:27,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,247 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2019-11-25 08:50:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:27,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054413494] [2019-11-25 08:50:27,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,255 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:27,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,256 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2019-11-25 08:50:27,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:27,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807279379] [2019-11-25 08:50:27,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:27,269 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:27,322 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:27,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:27,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:27,322 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:27,322 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:27,322 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:27,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:27,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-25 08:50:27,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:27,323 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:27,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,392 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:27,392 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:27,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:27,396 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:27,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:27,404 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:27,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:27,543 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:27,545 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:27,545 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:27,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:27,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:27,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:27,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:27,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:27,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-25 08:50:27,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:27,546 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:27,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:27,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:27,642 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:27,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:27,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:27,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:27,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:27,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:27,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:27,651 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:27,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:27,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:27,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:27,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:27,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:27,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:27,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:27,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,668 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:27,671 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:27,671 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:27,676 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:27,677 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:27,677 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:27,677 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:27,678 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:27,740 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:50:27,740 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-25 08:50:27,838 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2019-11-25 08:50:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:50:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-25 08:50:27,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-25 08:50:27,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:27,839 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:27,890 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:50:27,890 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-25 08:50:27,977 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2019-11-25 08:50:27,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:50:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2019-11-25 08:50:27,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-25 08:50:27,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:27,981 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:27,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:28,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:50:28,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:28,053 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:50:28,053 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-25 08:50:28,143 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2019-11-25 08:50:28,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:50:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2019-11-25 08:50:28,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-25 08:50:28,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2019-11-25 08:50:28,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2019-11-25 08:50:28,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2019-11-25 08:50:28,151 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2019-11-25 08:50:28,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2019-11-25 08:50:28,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-11-25 08:50:28,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2019-11-25 08:50:28,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2019-11-25 08:50:28,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:28,156 INFO L688 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2019-11-25 08:50:28,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2019-11-25 08:50:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2019-11-25 08:50:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-25 08:50:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2019-11-25 08:50:28,168 INFO L711 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-25 08:50:28,168 INFO L591 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-25 08:50:28,168 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-25 08:50:28,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2019-11-25 08:50:28,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2019-11-25 08:50:28,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:28,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:28,171 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-25 08:50:28,171 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:28,171 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-25 08:50:28,171 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-25 08:50:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2019-11-25 08:50:28,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207283584] [2019-11-25 08:50:28,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,178 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2019-11-25 08:50:28,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035626056] [2019-11-25 08:50:28,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,185 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2019-11-25 08:50:28,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136547408] [2019-11-25 08:50:28,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,196 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,253 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:28,253 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:28,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:28,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:28,253 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:28,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:28,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:28,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-25 08:50:28,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:28,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:28,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:28,314 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:28,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:28,320 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:28,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:28,329 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,333 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:28,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:28,414 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:28,416 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:28,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:28,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:28,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:28,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:28,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:28,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:28,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-25 08:50:28,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:28,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:28,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,489 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:28,490 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:28,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:28,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:28,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:28,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:28,495 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:28,495 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:28,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,503 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:28,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:28,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:28,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:28,505 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:50:28,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:28,505 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:50:28,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:28,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:28,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:28,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:28,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:28,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:28,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:28,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:28,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:28,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:28,518 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:50:28,518 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,521 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:28,521 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:28,521 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:28,521 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:28,522 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:28,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:28,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:28,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:50:28,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:28,578 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:50:28,578 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2019-11-25 08:50:28,647 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2019-11-25 08:50:28,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:50:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-25 08:50:28,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-25 08:50:28,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-25 08:50:28,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-25 08:50:28,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:28,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2019-11-25 08:50:28,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-25 08:50:28,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2019-11-25 08:50:28,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-25 08:50:28,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-25 08:50:28,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2019-11-25 08:50:28,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:50:28,659 INFO L688 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2019-11-25 08:50:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2019-11-25 08:50:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2019-11-25 08:50:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-25 08:50:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2019-11-25 08:50:28,675 INFO L711 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-25 08:50:28,675 INFO L591 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-25 08:50:28,675 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-25 08:50:28,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2019-11-25 08:50:28,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:50:28,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:28,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:28,676 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2019-11-25 08:50:28,676 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:28,677 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-25 08:50:28,677 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-25 08:50:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,677 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2019-11-25 08:50:28,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072098543] [2019-11-25 08:50:28,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,687 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2019-11-25 08:50:28,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189037180] [2019-11-25 08:50:28,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,692 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2019-11-25 08:50:28,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:28,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140145004] [2019-11-25 08:50:28,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:28,704 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:28,749 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:28,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:28,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:28,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:28,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:28,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:28,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:28,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-25 08:50:28,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:28,750 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:28,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,835 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:28,835 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:28,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,846 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:28,851 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:28,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,857 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,861 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:28,861 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:28,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:28,869 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:50:28,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:28,878 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:28,972 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:28,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:28,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:28,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:28,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:28,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:28,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:28,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:28,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-25 08:50:28,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:28,973 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:28,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:28,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:29,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:29,033 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:29,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:29,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:29,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:29,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:29,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:29,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:29,038 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:29,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:29,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:29,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:29,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:29,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:29,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:29,047 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:50:29,047 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:50:29,049 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:29,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:50:29,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:50:29,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:50:29,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:50:29,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:50:29,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:50:29,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:50:29,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:50:29,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:50:29,060 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:50:29,060 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_457da3e6-df9b-4644-af32-407e0c5604a2/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:29,063 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:50:29,063 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:50:29,063 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:50:29,063 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:50:29,064 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:50:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:29,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:29,103 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-25 08:50:29,126 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2019-11-25 08:50:29,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:50:29,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:50:29,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:29,131 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:29,201 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:29,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-25 08:50:29,234 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2019-11-25 08:50:29,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:50:29,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:50:29,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:29,236 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:50:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:29,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:29,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:29,279 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:50:29,280 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-25 08:50:29,298 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2019-11-25 08:50:29,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:50:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:50:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-25 08:50:29,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:50:29,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:29,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2019-11-25 08:50:29,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:29,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-25 08:50:29,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:50:29,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2019-11-25 08:50:29,305 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:50:29,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2019-11-25 08:50:29,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:50:29,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:50:29,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:50:29,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:50:29,306 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:50:29,306 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:50:29,306 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:50:29,306 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-25 08:50:29,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:50:29,306 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:50:29,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:50:29,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:50:29 BoogieIcfgContainer [2019-11-25 08:50:29,314 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:50:29,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:29,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:29,315 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:29,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:22" (3/4) ... [2019-11-25 08:50:29,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:50:29,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:29,320 INFO L168 Benchmark]: Toolchain (without parser) took 7354.65 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 271.1 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -88.9 MB). Peak memory consumption was 182.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:29,321 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:29,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -155.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:29,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:29,322 INFO L168 Benchmark]: Boogie Preprocessor took 16.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:29,322 INFO L168 Benchmark]: RCFGBuilder took 219.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:29,322 INFO L168 Benchmark]: BuchiAutomizer took 6815.31 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.9 MB). Peak memory consumption was 210.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:29,323 INFO L168 Benchmark]: Witness Printer took 4.09 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:29,325 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -155.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 219.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6815.31 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.9 MB). Peak memory consumption was 210.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.09 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 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 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.7s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 4.7s. Construction of modules took 0.3s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...