./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:44:06,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:44:06,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:44:06,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:44:06,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:44:06,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:44:06,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:44:06,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:44:06,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:44:06,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:44:06,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:44:06,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:44:06,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:44:06,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:44:06,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:44:06,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:44:06,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:44:06,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:44:06,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:44:06,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:44:06,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:44:06,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:44:06,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:44:06,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:44:06,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:44:06,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:44:06,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:44:06,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:44:06,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:44:06,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:44:06,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:44:06,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:44:06,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:44:06,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:44:06,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:44:06,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:44:06,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:44:06,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:44:06,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:44:06,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:44:06,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:44:06,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:44:06,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:44:06,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:44:06,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:44:06,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:44:06,585 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:44:06,585 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:44:06,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:44:06,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:44:06,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:44:06,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:44:06,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:44:06,588 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:44:06,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:44:06,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:44:06,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:44:06,588 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:44:06,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:44:06,589 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_d6703692-1269-46ca-9251-fffaa4514628/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 -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2019-12-07 18:44:06,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:44:06,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:44:06,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:44:06,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:44:06,699 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:44:06,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2019-12-07 18:44:06,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/data/96e3fd0cd/4b3484d6cbeb494b8e0fbc8ebe122d03/FLAG4cfd708b9 [2019-12-07 18:44:07,236 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:44:07,237 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/sv-benchmarks/c/termination-restricted-15/c.08.c [2019-12-07 18:44:07,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/data/96e3fd0cd/4b3484d6cbeb494b8e0fbc8ebe122d03/FLAG4cfd708b9 [2019-12-07 18:44:07,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/data/96e3fd0cd/4b3484d6cbeb494b8e0fbc8ebe122d03 [2019-12-07 18:44:07,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:44:07,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:44:07,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:44:07,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:44:07,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:44:07,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@896f2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07, skipping insertion in model container [2019-12-07 18:44:07,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:44:07,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:44:07,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:44:07,845 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:44:07,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:44:07,897 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:44:07,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07 WrapperNode [2019-12-07 18:44:07,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:44:07,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:44:07,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:44:07,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:44:07,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:44:07,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:44:07,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:44:07,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:44:07,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... [2019-12-07 18:44:07,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:44:07,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:44:07,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:44:07,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:44:07,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:44:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:44:08,068 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:44:08,069 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:44:08,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:08 BoogieIcfgContainer [2019-12-07 18:44:08,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:44:08,070 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:44:08,070 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:44:08,072 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:44:08,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:08,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:44:07" (1/3) ... [2019-12-07 18:44:08,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20e33288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:44:08, skipping insertion in model container [2019-12-07 18:44:08,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:08,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:07" (2/3) ... [2019-12-07 18:44:08,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20e33288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:44:08, skipping insertion in model container [2019-12-07 18:44:08,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:08,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:08" (3/3) ... [2019-12-07 18:44:08,075 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.08.c [2019-12-07 18:44:08,103 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:44:08,103 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:44:08,104 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:44:08,104 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:44:08,104 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:44:08,104 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:44:08,104 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:44:08,104 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:44:08,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:44:08,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:08,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:08,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:08,129 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:44:08,129 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:44:08,129 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:44:08,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:44:08,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:08,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:08,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:08,130 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:44:08,130 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:44:08,135 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2019-12-07 18:44:08,135 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 <= main_~i~0 - 1); 10#L12-3true main_~i~0 := main_~i~0 - 1; 8#L10-2true [2019-12-07 18:44:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,139 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 18:44:08,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152807326] [2019-12-07 18:44:08,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,208 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 18:44:08,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625246224] [2019-12-07 18:44:08,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,219 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-12-07 18:44:08,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143262042] [2019-12-07 18:44:08,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,229 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,265 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:08,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:08,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:08,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:08,265 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:44:08,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:08,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:08,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-12-07 18:44:08,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:08,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:08,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,367 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:08,367 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:08,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:08,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:08,381 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_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:08,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:08,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:08,389 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_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:08,393 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:44:08,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:08,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:44:08,412 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:08,412 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:08,412 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:08,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:08,412 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:44:08,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:08,412 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:08,412 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-12-07 18:44:08,412 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:08,412 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:08,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,467 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:08,471 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:08,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:08,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:08,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:08,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:08,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:08,480 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:08,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:08,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:08,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:08,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:08,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:08,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:08,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:08,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:08,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:08,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:44:08,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:08,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:08,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:08,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:44:08,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:44:08,504 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:44:08,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:44:08,509 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:44:08,517 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:44:08,517 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:44:08,517 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-12-07 18:44:08,520 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:44:08,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:08,548 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:08,549 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:08,556 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:08,556 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:08,577 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:44:08,578 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 18:44:08,612 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-12-07 18:44:08,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:44:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-12-07 18:44:08,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 18:44:08,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 18:44:08,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 18:44:08,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-12-07 18:44:08,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:44:08,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-12-07 18:44:08,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 18:44:08,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 18:44:08,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 18:44:08,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:44:08,623 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 18:44:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 18:44:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 18:44:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:44:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-12-07 18:44:08,641 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 18:44:08,641 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 18:44:08,641 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:44:08,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-12-07 18:44:08,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:44:08,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:08,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:08,642 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:44:08,642 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:44:08,642 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2019-12-07 18:44:08,642 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2019-12-07 18:44:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 18:44:08,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570303362] [2019-12-07 18:44:08,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 18:44:08,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174470275] [2019-12-07 18:44:08,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,656 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,656 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 18:44:08,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154107627] [2019-12-07 18:44:08,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:08,665 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:08,674 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:08,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:08,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:08,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:08,675 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:44:08,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:08,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:08,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-12-07 18:44:08,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:08,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:08,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,708 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:08,708 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:08,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:08,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:08,714 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_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:08,718 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:44:08,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:08,861 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:44:08,862 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:08,862 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:08,862 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:08,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:08,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:44:08,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:08,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:08,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-12-07 18:44:08,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:08,863 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:08,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:08,894 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:08,895 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:08,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:08,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:08,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:08,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:08,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:08,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:08,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:08,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:08,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:44:08,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:08,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:08,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:08,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:44:08,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:44:08,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:44:08,918 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:44:08,918 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:08,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:44:08,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:44:08,925 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:44:08,925 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 18:44:08,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:44:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:08,940 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:08,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:08,943 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:08,943 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:08,943 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:44:08,944 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 18:44:08,953 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-12-07 18:44:08,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:44:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 18:44:08,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 18:44:08,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 18:44:08,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:44:08,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:08,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-12-07 18:44:08,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:44:08,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-12-07 18:44:08,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 18:44:08,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 18:44:08,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-12-07 18:44:08,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:44:08,956 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:44:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-12-07 18:44:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-12-07 18:44:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:44:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-12-07 18:44:08,957 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 18:44:08,957 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 18:44:08,957 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:44:08,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-12-07 18:44:08,957 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:44:08,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:08,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:08,958 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-12-07 18:44:08,958 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:44:08,958 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 123#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2019-12-07 18:44:08,958 INFO L796 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2019-12-07 18:44:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,958 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-12-07 18:44:08,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529392443] [2019-12-07 18:44:08,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:08,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529392443] [2019-12-07 18:44:08,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:44:08,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:44:08,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062850722] [2019-12-07 18:44:08,997 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:44:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-12-07 18:44:08,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:08,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346181382] [2019-12-07 18:44:08,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:09,004 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:09,013 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:09,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:09,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:09,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:09,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:44:09,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:09,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:09,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-12-07 18:44:09,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:09,015 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:09,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,053 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:09,053 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:09,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:09,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:09,059 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_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:09,064 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:44:09,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:09,205 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:44:09,207 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:09,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:09,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:09,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:09,208 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:44:09,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:09,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:09,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-12-07 18:44:09,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:09,208 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:09,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:09,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:09,244 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:44:09,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:09,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:44:09,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:09,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:09,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:09,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:44:09,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:44:09,252 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:44:09,256 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:44:09,256 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6703692-1269-46ca-9251-fffaa4514628/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:09,259 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:44:09,259 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:44:09,259 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:44:09,259 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 18:44:09,261 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:44:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,277 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,280 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:09,280 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:44:09,280 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 18:44:09,289 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-12-07 18:44:09,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:44:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 18:44:09,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 18:44:09,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:09,290 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:44:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,307 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,307 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:09,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:44:09,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 18:44:09,315 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-12-07 18:44:09,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:44:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 18:44:09,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 18:44:09,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:09,316 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:44:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,328 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,328 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:09,331 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:09,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:44:09,331 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:44:09,332 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 18:44:09,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-12-07 18:44:09,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:44:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 18:44:09,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 18:44:09,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:09,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 18:44:09,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:09,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 18:44:09,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:09,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-12-07 18:44:09,342 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:44:09,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-12-07 18:44:09,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:44:09,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:44:09,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:44:09,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:44:09,343 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:09,343 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:09,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:44:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:44:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:44:09,346 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-12-07 18:44:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:44:09,347 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:44:09,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:44:09,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:44:09,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:44:09,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:44:09,348 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:09,348 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:44:09,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:44:09,349 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:44:09,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:44:09,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:44:09 BoogieIcfgContainer [2019-12-07 18:44:09,353 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:44:09,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:44:09,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:44:09,353 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:44:09,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:08" (3/4) ... [2019-12-07 18:44:09,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:44:09,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:44:09,357 INFO L168 Benchmark]: Toolchain (without parser) took 1629.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 936.6 MB in the beginning and 898.7 MB in the end (delta: 37.8 MB). Peak memory consumption was 168.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:09,357 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:44:09,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:09,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.45 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:09,359 INFO L168 Benchmark]: Boogie Preprocessor took 13.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:44:09,359 INFO L168 Benchmark]: RCFGBuilder took 135.74 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:09,360 INFO L168 Benchmark]: BuchiAutomizer took 1282.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 898.7 MB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:09,360 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 1.2 GB. Free memory is still 898.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:44:09,362 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.45 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.53 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 135.74 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1282.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 898.7 MB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.76 ms. Allocated memory is still 1.2 GB. Free memory is still 898.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function i + -1 * j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf98 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...