./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 0.1.25-f470102 [2019-12-07 12:57:34,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:57:34,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:57:34,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:57:34,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:57:34,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:57:34,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:57:34,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:57:34,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:57:34,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:57:34,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:57:34,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:57:34,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:57:34,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:57:34,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:57:34,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:57:34,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:57:34,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:57:34,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:57:34,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:57:34,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:57:34,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:57:34,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:57:34,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:57:34,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:57:34,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:57:34,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:57:34,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:57:34,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:57:34,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:57:34,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:57:34,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:57:34,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:57:34,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:57:34,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:57:34,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:57:34,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:57:34,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:57:34,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:57:34,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:57:34,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:57:34,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 12:57:34,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:57:34,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:57:34,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:57:34,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:57:34,268 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:57:34,268 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 12:57:34,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:57:34,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:57:34,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 12:57:34,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:57:34,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:57:34,271 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 12:57:34,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:57:34,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:57:34,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:57:34,271 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 12:57:34,272 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 12:57:34,272 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:34,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:57:34,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:57:34,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:57:34,383 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:57:34,383 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:57:34,383 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-12-07 12:57:34,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/data/214639aa3/3394e63677b44e70b186314c7c839a91/FLAGa2e27c537 [2019-12-07 12:57:34,912 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:57:34,913 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-12-07 12:57:34,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/data/214639aa3/3394e63677b44e70b186314c7c839a91/FLAGa2e27c537 [2019-12-07 12:57:35,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/data/214639aa3/3394e63677b44e70b186314c7c839a91 [2019-12-07 12:57:35,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:57:35,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:57:35,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:57:35,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:57:35,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:57:35,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4098f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35, skipping insertion in model container [2019-12-07 12:57:35,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:57:35,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:57:35,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:57:35,540 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:57:35,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:57:35,589 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:57:35,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35 WrapperNode [2019-12-07 12:57:35,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:57:35,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:57:35,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:57:35,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:57:35,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:57:35,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:57:35,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:57:35,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:57:35,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... [2019-12-07 12:57:35,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:57:35,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:57:35,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:57:35,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:57:35,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:57:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:57:35,750 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:57:35,751 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 12:57:35,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:35 BoogieIcfgContainer [2019-12-07 12:57:35,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:57:35,752 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 12:57:35,752 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 12:57:35,754 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 12:57:35,754 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:57:35,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:57:35" (1/3) ... [2019-12-07 12:57:35,755 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41b4308b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:57:35, skipping insertion in model container [2019-12-07 12:57:35,755 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:57:35,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:35" (2/3) ... [2019-12-07 12:57:35,756 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41b4308b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:57:35, skipping insertion in model container [2019-12-07 12:57:35,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:57:35,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:35" (3/3) ... [2019-12-07 12:57:35,757 INFO L371 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2019-12-07 12:57:35,786 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 12:57:35,786 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 12:57:35,786 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 12:57:35,786 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:57:35,786 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:57:35,786 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 12:57:35,786 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:57:35,787 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 12:57:35,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 12:57:35,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:35,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:35,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:35,812 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:57:35,812 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:35,812 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 12:57:35,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 12:57:35,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:35,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:35,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:35,813 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:57:35,813 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:35,818 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2019-12-07 12:57:35,818 INFO L796 eck$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 [2019-12-07 12:57:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 12:57:35,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:35,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438810210] [2019-12-07 12:57:35,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,893 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2019-12-07 12:57:35,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:35,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475296373] [2019-12-07 12:57:35,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2019-12-07 12:57:35,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:35,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821928967] [2019-12-07 12:57:35,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:35,916 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:35,964 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:35,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:35,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:35,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:35,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:35,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:35,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:35,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:35,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-12-07 12:57:35,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:35,966 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:35,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:35,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:35,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:35,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,058 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:36,059 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,070 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,078 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,085 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,089 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:36,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,121 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:36,123 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:36,123 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:36,123 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:36,123 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:36,123 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:36,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:36,123 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:36,123 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-12-07 12:57:36,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:36,123 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:36,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,180 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:36,183 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:36,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:36,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:36,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:36,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:36,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:36,210 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,215 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:36,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,217 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 12:57:36,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,218 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 12:57:36,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:36,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:36,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:36,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:36,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:36,232 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:36,237 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:36,237 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,241 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:36,241 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:36,242 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:36,242 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:36,245 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:36,267 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:36,268 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:36,274 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:57:36,274 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:36,314 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 [2019-12-07 12:57:36,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-12-07 12:57:36,355 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. [2019-12-07 12:57:36,355 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 [2019-12-07 12:57:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-12-07 12:57:36,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 12:57:36,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 12:57:36,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2019-12-07 12:57:36,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-12-07 12:57:36,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 12:57:36,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2019-12-07 12:57:36,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 12:57:36,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 12:57:36,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-12-07 12:57:36,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:36,367 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 12:57:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-12-07 12:57:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-12-07 12:57:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 12:57:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-12-07 12:57:36,385 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-12-07 12:57:36,386 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-12-07 12:57:36,386 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 12:57:36,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-12-07 12:57:36,386 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 12:57:36,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:36,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:36,387 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 12:57:36,387 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:36,387 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-12-07 12:57:36,387 INFO L796 eck$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 [2019-12-07 12:57:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 12:57:36,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580723531] [2019-12-07 12:57:36,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,395 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2019-12-07 12:57:36,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266231679] [2019-12-07 12:57:36,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2019-12-07 12:57:36,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030026615] [2019-12-07 12:57:36,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,431 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:36,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:36,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:36,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:36,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:36,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:36,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:36,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-12-07 12:57:36,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:36,432 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:36,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,499 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:36,500 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,506 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,511 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:36,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,619 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:36,620 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:36,620 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:36,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:36,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:36,620 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:36,620 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:36,621 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:36,621 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-12-07 12:57:36,621 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:36,621 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:36,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:36,677 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:36,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,684 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:36,684 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:36,687 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:36,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:36,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:36,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:36,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:36,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:36,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:36,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:36,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:36,701 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 12:57:36,702 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:36,705 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:36,705 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:36,705 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:36,707 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:36,721 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:36,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:36,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:36,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:36,732 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 12:57:36,732 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-12-07 12:57:36,753 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. [2019-12-07 12:57:36,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-12-07 12:57:36,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 12:57:36,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 12:57:36,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2019-12-07 12:57:36,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:36,755 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-12-07 12:57:36,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:36,757 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2019-12-07 12:57:36,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 12:57:36,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 12:57:36,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-12-07 12:57:36,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:36,757 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 12:57:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-12-07 12:57:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-12-07 12:57:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 12:57:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-12-07 12:57:36,759 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-12-07 12:57:36,759 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-12-07 12:57:36,760 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 12:57:36,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2019-12-07 12:57:36,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:36,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:36,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:36,761 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 12:57:36,761 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:36,761 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-12-07 12:57:36,761 INFO L796 eck$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 [2019-12-07 12:57:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,761 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2019-12-07 12:57:36,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472191311] [2019-12-07 12:57:36,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2019-12-07 12:57:36,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778579489] [2019-12-07 12:57:36,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,776 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2019-12-07 12:57:36,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:36,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394609807] [2019-12-07 12:57:36,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:36,785 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:36,802 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:36,802 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:36,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:36,802 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:36,802 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:36,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:36,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:36,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-12-07 12:57:36,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:36,803 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:36,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,863 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:36,863 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,869 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:36,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:36,877 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:36,882 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:36,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:36,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:36,975 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:36,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:36,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:36,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:36,976 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:36,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:36,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:36,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:36,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-12-07 12:57:36,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:36,976 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:36,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:36,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,030 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:37,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,043 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:37,043 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:37,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:37,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:37,065 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:37,065 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:37,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:37,068 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:37,068 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 12:57:37,071 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:37,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,081 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,083 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:37,095 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 [2019-12-07 12:57:37,095 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-12-07 12:57:37,112 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. [2019-12-07 12:57:37,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 12:57:37,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 12:57:37,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2019-12-07 12:57:37,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2019-12-07 12:57:37,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-12-07 12:57:37,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:37,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2019-12-07 12:57:37,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 12:57:37,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 12:57:37,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2019-12-07 12:57:37,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:37,117 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2019-12-07 12:57:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2019-12-07 12:57:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-12-07 12:57:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 12:57:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2019-12-07 12:57:37,119 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-12-07 12:57:37,119 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-12-07 12:57:37,119 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 12:57:37,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2019-12-07 12:57:37,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:57:37,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:37,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:37,120 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-12-07 12:57:37,120 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:37,120 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-12-07 12:57:37,120 INFO L796 eck$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 [2019-12-07 12:57:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2019-12-07 12:57:37,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705638847] [2019-12-07 12:57:37,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,127 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2019-12-07 12:57:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3755706] [2019-12-07 12:57:37,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,132 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,132 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2019-12-07 12:57:37,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236890839] [2019-12-07 12:57:37,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,141 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,157 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,157 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,157 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,157 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,158 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:37,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-12-07 12:57:37,158 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,158 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,200 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,200 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:37,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:37,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:37,206 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:37,211 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:37,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:37,357 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:37,359 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,360 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:37,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-12-07 12:57:37,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,360 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,405 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,406 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,410 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 12:57:37,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,410 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 12:57:37,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:37,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:37,421 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 12:57:37,421 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,424 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:37,424 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:37,424 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:37,424 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:37,426 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,437 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,437 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,441 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:37,454 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 [2019-12-07 12:57:37,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 12:57:37,472 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. [2019-12-07 12:57:37,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-12-07 12:57:37,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2019-12-07 12:57:37,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 12:57:37,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2019-12-07 12:57:37,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2019-12-07 12:57:37,476 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 12:57:37,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2019-12-07 12:57:37,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-12-07 12:57:37,477 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-12-07 12:57:37,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2019-12-07 12:57:37,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:37,477 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-12-07 12:57:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2019-12-07 12:57:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2019-12-07 12:57:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 12:57:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2019-12-07 12:57:37,480 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-12-07 12:57:37,480 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-12-07 12:57:37,480 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 12:57:37,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2019-12-07 12:57:37,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-12-07 12:57:37,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:37,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:37,481 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:37,481 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:37,481 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-12-07 12:57:37,481 INFO L796 eck$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 [2019-12-07 12:57:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2019-12-07 12:57:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612152046] [2019-12-07 12:57:37,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,488 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2019-12-07 12:57:37,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662225184] [2019-12-07 12:57:37,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2019-12-07 12:57:37,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160534664] [2019-12-07 12:57:37,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,501 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,520 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,520 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,520 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,520 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,520 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:37,520 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-12-07 12:57:37,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,521 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,561 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,561 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:37,564 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:37,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:37,579 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:37,580 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,581 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:37,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-12-07 12:57:37,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,581 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,625 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,625 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:37,631 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:37,633 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:37,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,641 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:37,643 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 12:57:37,643 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:37,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:37,645 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:37,646 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:37,647 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,658 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,662 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:37,669 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 12:57:37,669 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2019-12-07 12:57:37,680 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. [2019-12-07 12:57:37,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 12:57:37,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 12:57:37,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2019-12-07 12:57:37,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2019-12-07 12:57:37,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2019-12-07 12:57:37,683 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-12-07 12:57:37,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2019-12-07 12:57:37,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-12-07 12:57:37,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-12-07 12:57:37,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2019-12-07 12:57:37,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:37,684 INFO L688 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2019-12-07 12:57:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2019-12-07 12:57:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2019-12-07 12:57:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 12:57:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-12-07 12:57:37,689 INFO L711 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-12-07 12:57:37,689 INFO L591 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-12-07 12:57:37,689 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 12:57:37,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2019-12-07 12:57:37,690 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-12-07 12:57:37,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:37,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:37,690 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:37,691 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:37,691 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-12-07 12:57:37,691 INFO L796 eck$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 [2019-12-07 12:57:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2019-12-07 12:57:37,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239745582] [2019-12-07 12:57:37,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,699 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2019-12-07 12:57:37,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593408838] [2019-12-07 12:57:37,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,704 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2019-12-07 12:57:37,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:37,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773718801] [2019-12-07 12:57:37,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:37,716 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:37,732 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,732 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:37,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-12-07 12:57:37,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,733 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,775 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:37,778 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:37,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:37,851 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:37,852 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:37,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:37,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:37,852 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:37,852 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:37,852 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:37,852 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:37,852 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:37,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-12-07 12:57:37,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:37,853 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:37,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:37,898 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:37,898 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:37,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:37,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:37,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:37,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:37,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:37,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:37,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:37,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:37,907 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:37,907 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:37,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:37,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:37,910 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:37,910 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 12:57:37,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,923 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,927 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:37,937 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 [2019-12-07 12:57:37,937 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-12-07 12:57:37,953 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. [2019-12-07 12:57:37,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 12:57:37,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 12:57:37,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,954 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,965 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:37,968 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:37,968 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:37,978 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 [2019-12-07 12:57:37,978 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-12-07 12:57:37,996 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. [2019-12-07 12:57:37,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 12:57:37,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 12:57:37,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:37,996 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,008 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,011 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:38,023 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 [2019-12-07 12:57:38,023 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-12-07 12:57:38,039 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. [2019-12-07 12:57:38,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-12-07 12:57:38,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 12:57:38,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 12:57:38,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 12:57:38,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2019-12-07 12:57:38,044 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2019-12-07 12:57:38,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2019-12-07 12:57:38,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-12-07 12:57:38,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 12:57:38,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2019-12-07 12:57:38,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:38,046 INFO L688 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2019-12-07 12:57:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2019-12-07 12:57:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2019-12-07 12:57:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 12:57:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2019-12-07 12:57:38,050 INFO L711 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-12-07 12:57:38,050 INFO L591 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-12-07 12:57:38,050 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 12:57:38,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2019-12-07 12:57:38,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-12-07 12:57:38,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:38,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:38,051 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-12-07 12:57:38,051 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:38,051 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-12-07 12:57:38,051 INFO L796 eck$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 [2019-12-07 12:57:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2019-12-07 12:57:38,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391949170] [2019-12-07 12:57:38,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2019-12-07 12:57:38,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456239526] [2019-12-07 12:57:38,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,064 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2019-12-07 12:57:38,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831559619] [2019-12-07 12:57:38,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,113 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:38,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:38,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:38,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:38,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:38,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:38,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:38,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-12-07 12:57:38,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:38,113 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:38,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,170 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:38,170 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Exception during sending of exit command (exit): Broken pipe [2019-12-07 12:57:38,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:38,186 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:38,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:38,193 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:38,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:38,201 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,205 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:38,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:38,365 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:38,366 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:38,366 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:38,366 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:38,366 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:38,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:38,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,367 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:38,367 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:38,367 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-12-07 12:57:38,367 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:38,367 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:38,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,415 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:38,416 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:38,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,420 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 12:57:38,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,420 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 12:57:38,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:38,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:38,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,428 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:38,428 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:38,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,433 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:38,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,436 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:38,436 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:38,438 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,443 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:38,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:38,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:38,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:38,446 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:38,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:38,449 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:38,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:38,452 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:38,452 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:38,453 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,464 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,467 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:38,485 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 [2019-12-07 12:57:38,485 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2019-12-07 12:57:38,534 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. [2019-12-07 12:57:38,534 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 [2019-12-07 12:57:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:57:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-12-07 12:57:38,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-12-07 12:57:38,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-12-07 12:57:38,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-12-07 12:57:38,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2019-12-07 12:57:38,537 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-12-07 12:57:38,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2019-12-07 12:57:38,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2019-12-07 12:57:38,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2019-12-07 12:57:38,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2019-12-07 12:57:38,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:38,541 INFO L688 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2019-12-07 12:57:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2019-12-07 12:57:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2019-12-07 12:57:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-07 12:57:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2019-12-07 12:57:38,551 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-12-07 12:57:38,551 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-12-07 12:57:38,551 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 12:57:38,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2019-12-07 12:57:38,553 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-12-07 12:57:38,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:38,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:38,554 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:38,554 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:38,554 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-12-07 12:57:38,554 INFO L796 eck$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 [2019-12-07 12:57:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,554 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2019-12-07 12:57:38,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101795693] [2019-12-07 12:57:38,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,562 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2019-12-07 12:57:38,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822636467] [2019-12-07 12:57:38,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,569 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,569 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2019-12-07 12:57:38,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:38,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094340635] [2019-12-07 12:57:38,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:38,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:38,612 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:38,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:38,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:38,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:38,612 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:38,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:38,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:38,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-12-07 12:57:38,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:38,612 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:38,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,659 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:38,659 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:38,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:38,664 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:38,668 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:38,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:38,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:38,806 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:38,807 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:38,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:38,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:38,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:38,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:38,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:38,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:38,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-12-07 12:57:38,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:38,808 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:38,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:38,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:38,857 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,859 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:38,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:38,861 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:38,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:38,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:38,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:38,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:38,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:38,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:38,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:38,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:38,874 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:38,877 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:38,877 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:38,879 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:38,880 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:38,880 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:38,880 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:38,881 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,893 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,897 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:38,918 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 [2019-12-07 12:57:38,918 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-12-07 12:57:38,973 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. [2019-12-07 12:57:38,973 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 [2019-12-07 12:57:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:57:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-12-07 12:57:38,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 12:57:38,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:38,974 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,984 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:38,988 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:57:38,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,005 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 [2019-12-07 12:57:39,005 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-12-07 12:57:39,054 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. [2019-12-07 12:57:39,054 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 [2019-12-07 12:57:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:57:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2019-12-07 12:57:39,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 12:57:39,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,055 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:39,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,065 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,066 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,069 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,069 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,087 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 [2019-12-07 12:57:39,087 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-12-07 12:57:39,136 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. [2019-12-07 12:57:39,136 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 [2019-12-07 12:57:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:57:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2019-12-07 12:57:39,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 12:57:39,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2019-12-07 12:57:39,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2019-12-07 12:57:39,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2019-12-07 12:57:39,141 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2019-12-07 12:57:39,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2019-12-07 12:57:39,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-12-07 12:57:39,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2019-12-07 12:57:39,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2019-12-07 12:57:39,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:39,144 INFO L688 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2019-12-07 12:57:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2019-12-07 12:57:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2019-12-07 12:57:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-12-07 12:57:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2019-12-07 12:57:39,151 INFO L711 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-12-07 12:57:39,151 INFO L591 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-12-07 12:57:39,151 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 12:57:39,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2019-12-07 12:57:39,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2019-12-07 12:57:39,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:39,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:39,153 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-12-07 12:57:39,153 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:57:39,153 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-12-07 12:57:39,153 INFO L796 eck$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 [2019-12-07 12:57:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2019-12-07 12:57:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455544740] [2019-12-07 12:57:39,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,157 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2019-12-07 12:57:39,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534015329] [2019-12-07 12:57:39,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,162 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2019-12-07 12:57:39,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624600671] [2019-12-07 12:57:39,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,169 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,203 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:39,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:39,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:39,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:39,204 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:39,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,204 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:39,204 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:39,204 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-12-07 12:57:39,204 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:39,204 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:39,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,258 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:39,258 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:39,265 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:39,272 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,275 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:39,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:39,354 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:39,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:39,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:39,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:39,354 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:39,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:39,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:39,355 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-12-07 12:57:39,355 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:39,355 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:39,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,402 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:39,402 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:39,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:39,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:39,409 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:39,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,414 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 12:57:39,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,414 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 12:57:39,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:39,416 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:39,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:39,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:39,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:39,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:39,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:57:39,427 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:39,429 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:39,429 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:39,429 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:39,430 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,459 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 [2019-12-07 12:57:39,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2019-12-07 12:57:39,505 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. [2019-12-07 12:57:39,506 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 [2019-12-07 12:57:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:57:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-12-07 12:57:39,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-12-07 12:57:39,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-12-07 12:57:39,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-12-07 12:57:39,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2019-12-07 12:57:39,511 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 12:57:39,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2019-12-07 12:57:39,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-12-07 12:57:39,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-12-07 12:57:39,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2019-12-07 12:57:39,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:57:39,515 INFO L688 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2019-12-07 12:57:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2019-12-07 12:57:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2019-12-07 12:57:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-12-07 12:57:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2019-12-07 12:57:39,522 INFO L711 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-12-07 12:57:39,522 INFO L591 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-12-07 12:57:39,522 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 12:57:39,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2019-12-07 12:57:39,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:57:39,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:57:39,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:57:39,524 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2019-12-07 12:57:39,524 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:57:39,525 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-12-07 12:57:39,525 INFO L796 eck$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 [2019-12-07 12:57:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2019-12-07 12:57:39,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121885186] [2019-12-07 12:57:39,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,533 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2019-12-07 12:57:39,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256582999] [2019-12-07 12:57:39,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,537 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2019-12-07 12:57:39,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:57:39,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188441426] [2019-12-07 12:57:39,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:57:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:57:39,547 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:57:39,563 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:39,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:39,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:39,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:39,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:57:39,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,564 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:39,564 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:39,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-12-07 12:57:39,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:39,564 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:39,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:39,608 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:39,614 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:57:39,620 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:57:39,624 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:57:39,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:57:39,703 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:57:39,704 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:57:39,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:57:39,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:57:39,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:57:39,705 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:57:39,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:57:39,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:57:39,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:57:39,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-12-07 12:57:39,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:57:39,705 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:57:39,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:57:39,763 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:57:39,763 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,765 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:39,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,767 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:39,767 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:39,770 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:39,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,775 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:57:39,775 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:57:39,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:57:39,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:57:39,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:57:39,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:57:39,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:57:39,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:57:39,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:57:39,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:57:39,785 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:57:39,787 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 12:57:39,787 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_2a2e5c55-0104-4af2-9ba7-f29556dfd37f/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 [2019-12-07 12:57:39,789 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:57:39,790 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:57:39,790 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:57:39,790 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 12:57:39,791 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:57:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,803 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,806 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,806 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,817 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 [2019-12-07 12:57:39,817 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-12-07 12:57:39,831 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. [2019-12-07 12:57:39,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 12:57:39,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 12:57:39,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,832 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,845 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,845 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,847 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,848 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,858 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 [2019-12-07 12:57:39,858 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-12-07 12:57:39,874 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. [2019-12-07 12:57:39,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 12:57:39,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 12:57:39,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,874 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:57:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:57:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,887 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,887 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:57:39,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:57:39,890 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:57:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:57:39,900 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 [2019-12-07 12:57:39,900 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-12-07 12:57:39,914 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. [2019-12-07 12:57:39,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:57:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 12:57:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-12-07 12:57:39,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 12:57:39,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2019-12-07 12:57:39,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2019-12-07 12:57:39,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:57:39,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2019-12-07 12:57:39,917 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:57:39,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:57:39,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:57:39,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:57:39,918 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 12:57:39,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:57:39,918 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:57:39,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 12:57:39,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:57:39 BoogieIcfgContainer [2019-12-07 12:57:39,922 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 12:57:39,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:57:39,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:57:39,923 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:57:39,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:35" (3/4) ... [2019-12-07 12:57:39,925 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:57:39,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:57:39,927 INFO L168 Benchmark]: Toolchain (without parser) took 4504.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -155.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:39,927 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:39,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:39,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:39,928 INFO L168 Benchmark]: Boogie Preprocessor took 11.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:39,928 INFO L168 Benchmark]: RCFGBuilder took 129.81 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:39,928 INFO L168 Benchmark]: BuchiAutomizer took 4170.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.3 MB). Peak memory consumption was 43.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:57:39,929 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:57:39,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.75 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 11.74 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 129.81 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4170.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.3 MB). Peak memory consumption was 43.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 4.1s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. 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, 0.1s 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: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...