./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 687269bb6882b72a3d48999f1e5c55a1d5283a94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:15:25,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:15:25,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:15:26,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:15:26,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:15:26,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:15:26,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:15:26,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:15:26,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:15:26,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:15:26,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:15:26,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:15:26,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:15:26,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:15:26,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:15:26,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:15:26,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:15:26,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:15:26,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:15:26,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:15:26,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:15:26,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:15:26,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:15:26,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:15:26,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:15:26,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:15:26,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:15:26,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:15:26,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:15:26,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:15:26,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:15:26,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:15:26,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:15:26,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:15:26,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:15:26,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:15:26,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:15:26,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:15:26,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:15:26,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:15:26,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:15:26,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 04:15:26,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:15:26,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:15:26,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:15:26,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:15:26,092 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:15:26,092 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 04:15:26,093 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 04:15:26,093 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 04:15:26,093 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 04:15:26,093 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 04:15:26,093 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 04:15:26,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:15:26,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:15:26,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:15:26,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:15:26,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 04:15:26,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 04:15:26,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 04:15:26,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:15:26,095 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 04:15:26,095 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:15:26,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 04:15:26,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:15:26,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:15:26,096 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 04:15:26,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:15:26,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:15:26,105 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 04:15:26,107 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 04:15:26,107 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2019-11-20 04:15:26,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:15:26,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:15:26,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:15:26,287 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:15:26,288 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:15:26,289 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-20 04:15:26,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/data/f08251e7a/5f3af0610b2b4695b7532b374700ecaf/FLAGdfe8e008e [2019-11-20 04:15:26,755 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:15:26,756 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-20 04:15:26,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/data/f08251e7a/5f3af0610b2b4695b7532b374700ecaf/FLAGdfe8e008e [2019-11-20 04:15:27,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/data/f08251e7a/5f3af0610b2b4695b7532b374700ecaf [2019-11-20 04:15:27,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:15:27,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:15:27,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:15:27,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:15:27,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:15:27,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a7b673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27, skipping insertion in model container [2019-11-20 04:15:27,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,142 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:15:27,161 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:15:27,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:15:27,390 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:15:27,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:15:27,561 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:15:27,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27 WrapperNode [2019-11-20 04:15:27,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:15:27,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:15:27,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:15:27,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:15:27,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:15:27,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:15:27,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:15:27,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:15:27,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... [2019-11-20 04:15:27,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:15:27,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:15:27,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:15:27,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:15:27,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:15:27,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:15:27,875 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:15:27,875 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 04:15:27,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:15:27 BoogieIcfgContainer [2019-11-20 04:15:27,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:15:27,877 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 04:15:27,878 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 04:15:27,881 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 04:15:27,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:15:27,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 04:15:27" (1/3) ... [2019-11-20 04:15:27,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d4a4171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:15:27, skipping insertion in model container [2019-11-20 04:15:27,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:15:27,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:15:27" (2/3) ... [2019-11-20 04:15:27,884 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d4a4171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:15:27, skipping insertion in model container [2019-11-20 04:15:27,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:15:27,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:15:27" (3/3) ... [2019-11-20 04:15:27,886 INFO L371 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2019-11-20 04:15:27,935 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 04:15:27,935 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 04:15:27,935 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 04:15:27,935 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:15:27,935 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:15:27,936 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 04:15:27,936 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:15:27,936 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 04:15:27,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-20 04:15:27,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:27,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:27,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:27,983 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:15:27,983 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:27,983 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 04:15:27,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-20 04:15:27,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:27,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:27,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:27,985 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:15:27,986 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:27,993 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2019-11-20 04:15:27,994 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2019-11-20 04:15:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:28,001 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 04:15:28,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:28,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190230343] [2019-11-20 04:15:28,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,103 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2019-11-20 04:15:28,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:28,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075695528] [2019-11-20 04:15:28,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,125 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:28,127 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2019-11-20 04:15:28,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:28,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630667959] [2019-11-20 04:15:28,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:28,143 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:28,252 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:28,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:28,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:28,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:28,253 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:28,254 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,254 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:28,254 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:28,254 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-20 04:15:28,254 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:28,255 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:28,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,488 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:28,488 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:28,502 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,518 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:28,518 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:28,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:28,534 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:28,541 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:28,557 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:28,564 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:28,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:28,580 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:28,614 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,661 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:28,664 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:28,664 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:28,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:28,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:28,664 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:28,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:28,665 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:28,665 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-20 04:15:28,665 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:28,665 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:28,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:28,803 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:28,808 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,817 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:28,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:28,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:28,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:28,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:28,833 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:28,834 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:28,846 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:28,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:28,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:28,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:28,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:28,874 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:28,874 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:28,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:28,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:28,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:28,896 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 04:15:28,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:28,898 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 04:15:28,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:28,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:28,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:28,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:28,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:28,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:28,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:28,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:28,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:28,951 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:28,951 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:28,966 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:28,966 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:28,966 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:28,967 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:28,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:29,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:29,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:29,021 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:15:29,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:29,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:29,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-11-20 04:15:29,186 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2019-11-20 04:15:29,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-20 04:15:29,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 04:15:29,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:29,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 04:15:29,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:29,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-20 04:15:29,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:29,199 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-11-20 04:15:29,207 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-20 04:15:29,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2019-11-20 04:15:29,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-20 04:15:29,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-20 04:15:29,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-20 04:15:29,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:29,217 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 04:15:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-20 04:15:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-11-20 04:15:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 04:15:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-20 04:15:29,252 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-20 04:15:29,252 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-20 04:15:29,252 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 04:15:29,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-11-20 04:15:29,253 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-20 04:15:29,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:29,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:29,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:15:29,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:29,254 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-20 04:15:29,254 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-20 04:15:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 04:15:29,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:29,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719337934] [2019-11-20 04:15:29,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,264 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:29,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2019-11-20 04:15:29,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:29,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751870221] [2019-11-20 04:15:29,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2019-11-20 04:15:29,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:29,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041119062] [2019-11-20 04:15:29,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:29,291 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:29,336 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:29,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:29,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:29,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:29,336 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:29,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:29,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:29,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-20 04:15:29,337 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:29,337 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:29,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,468 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:29,468 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:29,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:29,486 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,492 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:29,492 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:29,506 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:29,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:29,675 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:29,679 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:29,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:29,679 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:29,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:29,679 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:29,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:29,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:29,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-20 04:15:29,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:29,680 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:29,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:29,838 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:29,839 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,847 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:29,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:29,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:29,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:29,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:29,856 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:29,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:29,865 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:29,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:29,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:29,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:29,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:29,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:29,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:29,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:29,899 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:29,903 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 04:15:29,903 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:29,917 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:29,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:29,918 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:29,918 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:29,921 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:29,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:29,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:29,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:29,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:29,971 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:15:29,971 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-11-20 04:15:30,022 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2019-11-20 04:15:30,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-20 04:15:30,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-20 04:15:30,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 04:15:30,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-20 04:15:30,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-11-20 04:15:30,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:30,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2019-11-20 04:15:30,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 04:15:30,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 04:15:30,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-20 04:15:30,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:30,030 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 04:15:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-20 04:15:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-20 04:15:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 04:15:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-11-20 04:15:30,033 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-20 04:15:30,033 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-20 04:15:30,033 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 04:15:30,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2019-11-20 04:15:30,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:30,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:30,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:30,035 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 04:15:30,035 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:30,036 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-20 04:15:30,036 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-20 04:15:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,036 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2019-11-20 04:15:30,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914987306] [2019-11-20 04:15:30,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2019-11-20 04:15:30,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052531814] [2019-11-20 04:15:30,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,058 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:30,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2019-11-20 04:15:30,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687940366] [2019-11-20 04:15:30,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,080 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:30,127 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:30,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:30,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:30,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:30,128 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:30,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:30,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:30,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-20 04:15:30,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:30,129 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:30,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:30,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:30,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:30,301 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:30,321 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,327 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:30,327 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:30,350 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:30,374 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:30,513 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:30,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:30,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:30,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:30,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:30,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:30,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:30,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-20 04:15:30,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:30,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:30,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:30,636 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:30,636 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:30,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:30,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:30,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:30,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:30,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:30,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:30,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:30,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:30,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:30,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:30,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:30,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:30,676 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:30,676 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:30,680 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:30,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:30,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:30,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:30,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:30,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:30,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:30,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:30,710 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:30,711 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:30,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:30,716 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:30,716 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:30,716 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:15:30,725 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:30,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:30,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:30,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:30,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:30,801 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:30,801 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-20 04:15:30,856 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2019-11-20 04:15:30,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-20 04:15:30,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-20 04:15:30,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-20 04:15:30,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2019-11-20 04:15:30,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:30,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-11-20 04:15:30,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:30,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2019-11-20 04:15:30,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-20 04:15:30,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-20 04:15:30,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2019-11-20 04:15:30,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:30,868 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2019-11-20 04:15:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2019-11-20 04:15:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-20 04:15:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 04:15:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2019-11-20 04:15:30,873 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-20 04:15:30,873 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-20 04:15:30,874 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:15:30,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2019-11-20 04:15:30,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:15:30,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:30,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:30,876 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-20 04:15:30,876 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:30,877 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-20 04:15:30,877 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-20 04:15:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2019-11-20 04:15:30,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826759163] [2019-11-20 04:15:30,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2019-11-20 04:15:30,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19536575] [2019-11-20 04:15:30,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,926 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:30,928 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2019-11-20 04:15:30,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:30,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903356032] [2019-11-20 04:15:30,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:30,946 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:31,000 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:31,000 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:31,000 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:31,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:31,001 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:31,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:31,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:31,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-20 04:15:31,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:31,002 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:31,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,107 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:31,107 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:31,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:31,154 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:31,155 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:31,161 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:31,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:31,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:31,356 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:31,358 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:31,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:31,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:31,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:31,358 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:31,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:31,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:31,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-20 04:15:31,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:31,359 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:31,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:31,459 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:31,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:31,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:31,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:31,465 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 04:15:31,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:31,466 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 04:15:31,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:31,468 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:31,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:31,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:31,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:31,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:31,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:31,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:31,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:31,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:31,485 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 04:15:31,485 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:31,489 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:31,489 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:31,489 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:31,491 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:31,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:31,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:31,515 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:15:31,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:31,542 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:31,543 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-20 04:15:31,582 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2019-11-20 04:15:31,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-20 04:15:31,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-20 04:15:31,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:31,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-20 04:15:31,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:31,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-20 04:15:31,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:31,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2019-11-20 04:15:31,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-20 04:15:31,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2019-11-20 04:15:31,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-20 04:15:31,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-20 04:15:31,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2019-11-20 04:15:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:31,595 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-20 04:15:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2019-11-20 04:15:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2019-11-20 04:15:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 04:15:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2019-11-20 04:15:31,599 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-20 04:15:31,599 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-20 04:15:31,599 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:15:31,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2019-11-20 04:15:31,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-20 04:15:31,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:31,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:31,601 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:31,602 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:31,602 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-20 04:15:31,602 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-20 04:15:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2019-11-20 04:15:31,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:31,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888588665] [2019-11-20 04:15:31,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,615 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:31,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2019-11-20 04:15:31,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:31,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298079117] [2019-11-20 04:15:31,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,622 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2019-11-20 04:15:31,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:31,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25327616] [2019-11-20 04:15:31,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:31,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:31,684 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:31,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:31,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:31,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:31,684 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:31,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:31,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:31,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-20 04:15:31,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:31,685 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:31,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,754 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:31,754 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:31,758 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:31,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:31,787 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:31,789 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:31,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:31,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:31,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:31,790 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:31,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:31,790 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:31,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-20 04:15:31,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:31,791 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:31,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:31,909 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:31,909 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:31,921 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:31,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:31,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:31,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:31,925 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:31,925 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:31,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:31,935 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:31,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:31,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:31,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:31,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:31,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:31,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:31,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:31,946 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 04:15:31,946 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:31,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:31,949 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:31,950 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:31,950 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:31,951 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:31,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:31,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:31,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:31,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:31,997 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:15:31,997 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2019-11-20 04:15:32,020 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2019-11-20 04:15:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 04:15:32,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-20 04:15:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-20 04:15:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-20 04:15:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2019-11-20 04:15:32,025 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-20 04:15:32,026 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2019-11-20 04:15:32,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-20 04:15:32,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-11-20 04:15:32,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2019-11-20 04:15:32,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:32,027 INFO L688 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2019-11-20 04:15:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2019-11-20 04:15:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2019-11-20 04:15:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-20 04:15:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-11-20 04:15:32,035 INFO L711 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-20 04:15:32,035 INFO L591 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-20 04:15:32,035 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 04:15:32,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2019-11-20 04:15:32,037 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-20 04:15:32,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:32,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:32,038 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:32,038 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:32,038 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-20 04:15:32,038 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-20 04:15:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2019-11-20 04:15:32,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531858730] [2019-11-20 04:15:32,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,053 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2019-11-20 04:15:32,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071790886] [2019-11-20 04:15:32,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,061 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,062 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2019-11-20 04:15:32,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737823014] [2019-11-20 04:15:32,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,079 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,118 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:32,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:32,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:32,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:32,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:32,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:32,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:32,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-20 04:15:32,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:32,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:32,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,197 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:32,198 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:32,203 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:32,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:32,292 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:32,294 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:32,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:32,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:32,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:32,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:32,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:32,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:32,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-20 04:15:32,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:32,295 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:32,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,387 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:32,387 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:32,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:32,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:32,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:32,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:32,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:32,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:32,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:32,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:32,403 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:32,403 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,409 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:32,409 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:32,409 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:32,409 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:15:32,411 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:32,461 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:32,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-20 04:15:32,494 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2019-11-20 04:15:32,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-20 04:15:32,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-20 04:15:32,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,497 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:32,553 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:32,553 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-20 04:15:32,596 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2019-11-20 04:15:32,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 04:15:32,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-20 04:15:32,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,599 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:32,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:32,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:32,658 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:32,658 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-20 04:15:32,700 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2019-11-20 04:15:32,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-20 04:15:32,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-20 04:15:32,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 04:15:32,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-20 04:15:32,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:32,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2019-11-20 04:15:32,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2019-11-20 04:15:32,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2019-11-20 04:15:32,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-20 04:15:32,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-20 04:15:32,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2019-11-20 04:15:32,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:32,711 INFO L688 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2019-11-20 04:15:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2019-11-20 04:15:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2019-11-20 04:15:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-20 04:15:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2019-11-20 04:15:32,718 INFO L711 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-20 04:15:32,718 INFO L591 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-20 04:15:32,718 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 04:15:32,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2019-11-20 04:15:32,719 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-11-20 04:15:32,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:32,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:32,720 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-20 04:15:32,720 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:32,721 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-20 04:15:32,721 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-20 04:15:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2019-11-20 04:15:32,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656796570] [2019-11-20 04:15:32,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2019-11-20 04:15:32,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754632188] [2019-11-20 04:15:32,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,742 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:32,743 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2019-11-20 04:15:32,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:32,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296405470] [2019-11-20 04:15:32,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:32,759 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:32,854 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:32,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:32,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:32,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:32,854 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:32,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:32,854 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:32,854 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-20 04:15:32,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:32,855 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:32,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:32,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:32,967 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:32,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:32,983 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:32,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:32,989 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:32,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:32,998 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,004 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:33,004 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:33,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:33,015 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:33,019 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:33,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:33,024 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:33,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:33,046 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,227 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:33,229 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:33,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:33,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:33,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:33,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:33,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:33,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:33,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-20 04:15:33,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:33,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:33,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:33,299 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:33,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:33,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:33,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:33,306 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 04:15:33,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:33,307 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 04:15:33,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:33,313 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:33,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:33,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:33,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:33,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:33,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,334 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:33,334 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:33,337 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:33,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:33,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:33,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:33,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:33,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:33,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:33,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:33,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:33,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:33,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:33,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:33,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:33,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:33,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:33,361 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:33,364 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:33,364 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,367 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:33,368 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:33,368 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:33,368 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:33,370 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:33,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:33,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:33,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:15:33,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:33,448 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:15:33,448 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2019-11-20 04:15:33,537 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2019-11-20 04:15:33,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:15:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-20 04:15:33,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-20 04:15:33,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:33,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-20 04:15:33,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:33,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-20 04:15:33,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:33,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2019-11-20 04:15:33,542 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-20 04:15:33,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2019-11-20 04:15:33,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2019-11-20 04:15:33,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2019-11-20 04:15:33,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2019-11-20 04:15:33,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:33,547 INFO L688 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2019-11-20 04:15:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2019-11-20 04:15:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2019-11-20 04:15:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-11-20 04:15:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2019-11-20 04:15:33,563 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-20 04:15:33,563 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-20 04:15:33,563 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 04:15:33,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2019-11-20 04:15:33,565 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-20 04:15:33,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:33,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:33,566 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:33,566 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:33,567 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-20 04:15:33,567 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-20 04:15:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:33,567 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2019-11-20 04:15:33,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:33,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877506682] [2019-11-20 04:15:33,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,580 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2019-11-20 04:15:33,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:33,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416095731] [2019-11-20 04:15:33,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,590 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2019-11-20 04:15:33,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:33,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589977392] [2019-11-20 04:15:33,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:33,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:33,680 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:33,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:33,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:33,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:33,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:33,681 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:33,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:33,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-20 04:15:33,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:33,681 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:33,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,766 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:33,767 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:33,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:33,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:33,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:33,774 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:33,784 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:33,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:33,951 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:33,952 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:33,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:33,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:33,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:33,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:33,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:33,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:33,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:33,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-20 04:15:33,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:33,953 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:33,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:33,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:34,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:34,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:34,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:34,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:34,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:34,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:34,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:34,083 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:34,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:34,086 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:34,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:34,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:34,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:34,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:34,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:34,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:34,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:34,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:34,102 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:34,102 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:34,106 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:34,107 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:34,107 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:34,108 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:34,181 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:15:34,181 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Exception during sending of exit command (exit): Stream closed [2019-11-20 04:15:34,326 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2019-11-20 04:15:34,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:15:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-20 04:15:34,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-20 04:15:34,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:34,328 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:34,386 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:15:34,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-20 04:15:34,485 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2019-11-20 04:15:34,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:15:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2019-11-20 04:15:34,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-20 04:15:34,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:34,487 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:34,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:34,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:15:34,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:34,566 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:15:34,566 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-20 04:15:34,670 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2019-11-20 04:15:34,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:15:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2019-11-20 04:15:34,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-20 04:15:34,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:34,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2019-11-20 04:15:34,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:34,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2019-11-20 04:15:34,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:34,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2019-11-20 04:15:34,683 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2019-11-20 04:15:34,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2019-11-20 04:15:34,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-11-20 04:15:34,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2019-11-20 04:15:34,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2019-11-20 04:15:34,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:34,690 INFO L688 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2019-11-20 04:15:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2019-11-20 04:15:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2019-11-20 04:15:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-20 04:15:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2019-11-20 04:15:34,713 INFO L711 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-20 04:15:34,713 INFO L591 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-20 04:15:34,713 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 04:15:34,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2019-11-20 04:15:34,720 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2019-11-20 04:15:34,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:34,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:34,721 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-20 04:15:34,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:15:34,721 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-20 04:15:34,721 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-20 04:15:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2019-11-20 04:15:34,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:34,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033940722] [2019-11-20 04:15:34,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2019-11-20 04:15:34,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:34,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288086856] [2019-11-20 04:15:34,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:34,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2019-11-20 04:15:34,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:34,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883628283] [2019-11-20 04:15:34,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:34,754 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:34,815 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:34,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:34,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:34,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:34,816 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:34,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:34,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:34,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-20 04:15:34,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:34,816 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:34,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:34,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:34,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:34,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:34,900 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:34,900 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:34,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:34,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:34,916 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:34,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:34,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:34,925 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:34,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:34,932 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:34,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:34,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:35,033 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:35,034 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:35,034 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:35,034 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:35,035 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:35,035 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:35,035 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,035 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:35,035 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:35,035 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-20 04:15:35,035 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:35,035 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:35,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,110 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:35,110 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:35,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:35,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:35,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:35,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,129 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 04:15:35,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,129 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 04:15:35,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:35,131 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:35,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:35,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:35,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:35,142 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:35,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:15:35,146 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,150 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:35,150 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:35,150 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:35,150 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:35,152 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:15:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:35,207 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:15:35,207 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2019-11-20 04:15:35,320 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2019-11-20 04:15:35,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:15:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-20 04:15:35,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-20 04:15:35,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-20 04:15:35,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-20 04:15:35,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2019-11-20 04:15:35,327 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-20 04:15:35,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2019-11-20 04:15:35,331 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-20 04:15:35,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-20 04:15:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2019-11-20 04:15:35,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:15:35,332 INFO L688 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2019-11-20 04:15:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2019-11-20 04:15:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2019-11-20 04:15:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-20 04:15:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2019-11-20 04:15:35,340 INFO L711 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-20 04:15:35,340 INFO L591 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-20 04:15:35,340 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 04:15:35,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2019-11-20 04:15:35,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:15:35,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:15:35,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:15:35,343 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2019-11-20 04:15:35,343 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:15:35,343 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-20 04:15:35,343 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-20 04:15:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2019-11-20 04:15:35,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:35,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507029145] [2019-11-20 04:15:35,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,358 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2019-11-20 04:15:35,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:35,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181349576] [2019-11-20 04:15:35,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,366 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2019-11-20 04:15:35,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:15:35,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831738671] [2019-11-20 04:15:35,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:15:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:15:35,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:15:35,414 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:35,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:35,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:35,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:35,414 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:15:35,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:35,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:35,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-20 04:15:35,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:35,415 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:35,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,486 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:35,486 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:35,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:35,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:35,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:35,494 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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 [2019-11-20 04:15:35,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:35,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:35,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:15:35,504 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:15:35,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:15:35,509 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:15:35,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:15:35,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:15:35,614 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:15:35,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:15:35,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:15:35,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:15:35,615 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:15:35,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:15:35,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:15:35,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-20 04:15:35,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:15:35,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:15:35,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:15:35,689 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:15:35,689 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:35,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,696 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:35,696 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:35,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:35,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:15:35,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:15:35,711 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,716 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:15:35,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:15:35,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:15:35,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:15:35,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:15:35,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:15:35,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:15:35,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:15:35,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:15:35,733 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 04:15:35,733 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_310179a4-17d0-4b2c-b219-c9bdb2d1bca0/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) [2019-11-20 04:15:35,745 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:15:35,745 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:15:35,745 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:15:35,745 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 04:15:35,748 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:15:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:35,796 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:35,796 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-20 04:15:35,824 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2019-11-20 04:15:35,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-20 04:15:35,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 04:15:35,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,825 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:35,874 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:35,874 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-20 04:15:35,920 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2019-11-20 04:15:35,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 04:15:35,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 04:15:35,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,921 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:15:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:15:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:15:35,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:15:35,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:15:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:15:35,971 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:15:35,971 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-20 04:15:35,993 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2019-11-20 04:15:35,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:15:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:15:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-20 04:15:35,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 04:15:35,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2019-11-20 04:15:35,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-20 04:15:35,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:15:35,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2019-11-20 04:15:36,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:15:36,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2019-11-20 04:15:36,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:15:36,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:15:36,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:15:36,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:15:36,002 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:15:36,002 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:15:36,002 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:15:36,002 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 04:15:36,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:15:36,002 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:15:36,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:15:36,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:15:36 BoogieIcfgContainer [2019-11-20 04:15:36,010 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:15:36,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:15:36,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:15:36,011 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:15:36,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:15:27" (3/4) ... [2019-11-20 04:15:36,015 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:15:36,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:15:36,018 INFO L168 Benchmark]: Toolchain (without parser) took 8893.65 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 317.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -101.7 MB). Peak memory consumption was 215.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:15:36,019 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:15:36,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:15:36,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:15:36,020 INFO L168 Benchmark]: Boogie Preprocessor took 25.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:15:36,020 INFO L168 Benchmark]: RCFGBuilder took 248.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:15:36,021 INFO L168 Benchmark]: BuchiAutomizer took 8132.70 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 168.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 69.7 MB). Peak memory consumption was 238.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:15:36,021 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:15:36,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 438.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 248.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8132.70 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 168.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 69.7 MB). Peak memory consumption was 238.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 8.0s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 5.7s. Construction of modules took 0.4s. Büchi inclusion checks took 1.6s. 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, 0.4s 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: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...