./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:33:59,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:33:59,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:33:59,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:33:59,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:33:59,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:33:59,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:33:59,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:33:59,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:33:59,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:33:59,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:33:59,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:33:59,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:33:59,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:33:59,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:33:59,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:33:59,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:33:59,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:33:59,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:33:59,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:33:59,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:33:59,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:33:59,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:33:59,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:33:59,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:33:59,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:33:59,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:33:59,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:33:59,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:33:59,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:33:59,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:33:59,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:33:59,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:33:59,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:33:59,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:33:59,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:33:59,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:33:59,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:33:59,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:33:59,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:33:59,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:33:59,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:33:59,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:33:59,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:33:59,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:33:59,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:33:59,606 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:33:59,606 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:33:59,607 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:33:59,607 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:33:59,607 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:33:59,607 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:33:59,607 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:33:59,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:33:59,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:33:59,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:33:59,609 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:33:59,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:33:59,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:33:59,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:33:59,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:33:59,612 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:33:59,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:33:59,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:33:59,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:33:59,612 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:33:59,615 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:33:59,615 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 [2020-10-20 06:33:59,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:33:59,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:33:59,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:33:59,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:33:59,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:33:59,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-10-20 06:33:59,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908ca0fbb/ffef75bbe6fc4b7db4c85adf115e8602/FLAG42ae79f67 [2020-10-20 06:34:00,530 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:00,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-10-20 06:34:00,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908ca0fbb/ffef75bbe6fc4b7db4c85adf115e8602/FLAG42ae79f67 [2020-10-20 06:34:00,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908ca0fbb/ffef75bbe6fc4b7db4c85adf115e8602 [2020-10-20 06:34:00,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:00,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:00,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:00,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:00,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:00,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:00" (1/1) ... [2020-10-20 06:34:00,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc6f5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:00, skipping insertion in model container [2020-10-20 06:34:00,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:00" (1/1) ... [2020-10-20 06:34:00,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:00,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:01,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:01,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:01,176 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:01,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01 WrapperNode [2020-10-20 06:34:01,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:01,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:01,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:01,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:01,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:01,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:01,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:01,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:01,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... [2020-10-20 06:34:01,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:01,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:01,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:01,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:01,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:01,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:01,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:01,464 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:34:01,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:01 BoogieIcfgContainer [2020-10-20 06:34:01,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:01,467 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:01,467 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:01,471 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:01,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:01,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:00" (1/3) ... [2020-10-20 06:34:01,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c88f94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:01, skipping insertion in model container [2020-10-20 06:34:01,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:01,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:01" (2/3) ... [2020-10-20 06:34:01,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c88f94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:01, skipping insertion in model container [2020-10-20 06:34:01,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:01,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:01" (3/3) ... [2020-10-20 06:34:01,478 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-10-20 06:34:01,529 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:01,530 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:01,530 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:01,530 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:01,530 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:01,530 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:01,531 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:01,531 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:01,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:01,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:01,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:01,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:01,571 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:01,571 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:01,571 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:01,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:01,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:01,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:01,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:01,573 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:01,573 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:01,581 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2020-10-20 06:34:01,581 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~i~0 < 5);main_~j~0 := 0; 6#L19-2true assume !(main_~i~0 > 2 && main_~j~0 <= 9); 5#L19-3true main_~i~0 := 1 + main_~i~0; 3#L17-2true [2020-10-20 06:34:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:34:01,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:01,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87637688] [2020-10-20 06:34:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,701 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:01,703 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-10-20 06:34:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:01,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142854086] [2020-10-20 06:34:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:01,727 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-10-20 06:34:01,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:01,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452535291] [2020-10-20 06:34:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:01,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:01,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:01,842 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:01,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:01,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:01,843 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:01,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:01,844 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:01,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:01,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:01,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration1_Loop [2020-10-20 06:34:01,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:01,846 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:01,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:01,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:01,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:01,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:02,016 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:02,017 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:02,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:02,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:02,048 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:02,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:02,082 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:02,082 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:02,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:02,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:02,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:02,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0} Honda state: {ULTIMATE.start_main_~j~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:02,160 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:02,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:02,219 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:02,221 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:02,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:02,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:02,223 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:02,223 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:02,223 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:02,223 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:02,223 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:02,223 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration1_Loop [2020-10-20 06:34:02,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:02,224 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:02,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:02,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:02,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:02,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:02,342 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:02,348 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,362 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 [2020-10-20 06:34:02,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:02,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:02,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:02,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:02,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:02,374 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:02,381 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:02,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:02,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:02,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:02,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:02,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:02,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:02,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:02,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:02,436 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:02,442 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:02,442 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:02,449 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:02,449 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:02,450 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:02,450 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2020-10-20 06:34:02,490 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:02,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:02,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:02,561 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:34:02,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:02,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:02,656 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:34:02,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-10-20 06:34:02,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2020-10-20 06:34:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2020-10-20 06:34:02,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-20 06:34:02,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:02,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:34:02,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:02,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-20 06:34:02,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:02,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2020-10-20 06:34:02,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:02,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2020-10-20 06:34:02,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:34:02,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:34:02,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2020-10-20 06:34:02,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:02,783 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 06:34:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2020-10-20 06:34:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 06:34:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:34:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-10-20 06:34:02,815 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-10-20 06:34:02,815 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-10-20 06:34:02,816 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:02,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2020-10-20 06:34:02,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:02,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:02,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:02,818 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:02,818 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:34:02,818 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 83#L19-2 [2020-10-20 06:34:02,819 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 90#L19-2 assume !(main_~i~0 > 2 && main_~j~0 <= 9); 88#L19-3 main_~i~0 := 1 + main_~i~0; 82#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 83#L19-2 [2020-10-20 06:34:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:34:02,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911242207] [2020-10-20 06:34:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:02,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:02,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:02,830 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2020-10-20 06:34:02,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:02,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086135106] [2020-10-20 06:34:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:02,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:02,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:02,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:02,863 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2020-10-20 06:34:02,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:02,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601025433] [2020-10-20 06:34:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:02,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601025433] [2020-10-20 06:34:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934264483] [2020-10-20 06:34:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:34:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:02,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:02,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:34:02,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-20 06:34:02,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679713480] [2020-10-20 06:34:03,022 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:03,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:03,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:03,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:03,023 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:03,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:03,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:03,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration2_Loop [2020-10-20 06:34:03,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:03,024 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:03,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,131 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:03,131 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:03,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:03,135 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:03,140 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:03,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:03,183 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:03,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:03,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:03,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:03,261 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:03,261 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:03,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:03,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:03,262 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:03,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,262 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:03,262 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:03,262 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration2_Loop [2020-10-20 06:34:03,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:03,263 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:03,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,352 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:03,352 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:03,368 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 [2020-10-20 06:34:03,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:03,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:03,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:03,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:03,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:03,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:03,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,376 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:03,379 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:03,379 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:03,387 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:03,388 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:03,388 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:03,388 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] [2020-10-20 06:34:03,409 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:03,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:03,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:03,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:34:03,480 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 [2020-10-20 06:34:03,480 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-20 06:34:03,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2020-10-20 06:34:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-20 06:34:03,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 06:34:03,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:03,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:34:03,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:03,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2020-10-20 06:34:03,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:03,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2020-10-20 06:34:03,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:03,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2020-10-20 06:34:03,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:34:03,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:34:03,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2020-10-20 06:34:03,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:03,513 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 06:34:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2020-10-20 06:34:03,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-20 06:34:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 06:34:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2020-10-20 06:34:03,516 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2020-10-20 06:34:03,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:03,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:34:03,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:34:03,522 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand 4 states. [2020-10-20 06:34:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:03,581 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-10-20 06:34:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:34:03,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2020-10-20 06:34:03,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:03,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 24 transitions. [2020-10-20 06:34:03,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:34:03,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:34:03,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2020-10-20 06:34:03,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:03,585 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-10-20 06:34:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2020-10-20 06:34:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-20 06:34:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:34:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2020-10-20 06:34:03,588 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-10-20 06:34:03,589 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-10-20 06:34:03,589 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:34:03,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2020-10-20 06:34:03,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:03,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:03,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:03,591 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:34:03,591 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:03,591 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 205#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 207#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 211#L19-2 [2020-10-20 06:34:03,591 INFO L796 eck$LassoCheckResult]: Loop: 211#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 211#L19-2 [2020-10-20 06:34:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-10-20 06:34:03,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:03,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876639428] [2020-10-20 06:34:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:03,604 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-10-20 06:34:03,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:03,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361957039] [2020-10-20 06:34:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2020-10-20 06:34:03,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:03,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706763717] [2020-10-20 06:34:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:03,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:03,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:03,647 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:03,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:03,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:03,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:03,647 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:03,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:03,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:03,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration3_Loop [2020-10-20 06:34:03,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:03,648 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:03,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:03,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:03,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:03,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:03,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:03,719 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:34:03,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:03,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:03,762 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:03,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=3} Honda state: {ULTIMATE.start_main_~i~0=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:03,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:03,818 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:03,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:03,898 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,941 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:03,943 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:03,943 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:03,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:03,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:03,943 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:03,943 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:03,944 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:03,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:03,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration3_Loop [2020-10-20 06:34:03,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:03,944 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:03,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:03,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,006 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:04,006 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:04,032 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 [2020-10-20 06:34:04,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:04,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:04,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:04,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:04,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:04,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:04,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,044 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:04,098 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 [2020-10-20 06:34:04,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:04,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:04,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:04,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:04,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:04,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:04,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,106 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:04,113 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:04,113 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:04,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:04,124 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:04,124 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 19 Supporting invariants [] [2020-10-20 06:34:04,151 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:04,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,187 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,188 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 [2020-10-20 06:34:04,188 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10 Second operand 2 states. [2020-10-20 06:34:04,208 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 23 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 34 states and 46 transitions. Complement of second has 5 states. [2020-10-20 06:34:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:34:04,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-20 06:34:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-20 06:34:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:34:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 46 transitions. [2020-10-20 06:34:04,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:04,220 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 28 states and 39 transitions. [2020-10-20 06:34:04,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:34:04,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:34:04,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 39 transitions. [2020-10-20 06:34:04,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:04,223 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 39 transitions. [2020-10-20 06:34:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 39 transitions. [2020-10-20 06:34:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2020-10-20 06:34:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:34:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2020-10-20 06:34:04,236 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-20 06:34:04,237 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-20 06:34:04,237 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:34:04,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2020-10-20 06:34:04,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:04,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:04,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:04,248 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2020-10-20 06:34:04,248 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:04,249 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1; 287#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 289#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 295#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 296#L19-2 assume !(main_~i~0 > 2 && main_~j~0 <= 9); 292#L19-3 main_~i~0 := 1 + main_~i~0; 293#L17-2 assume !!(main_~i~0 < 5);main_~j~0 := 0; 297#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 298#L19-2 [2020-10-20 06:34:04,249 INFO L796 eck$LassoCheckResult]: Loop: 298#L19-2 assume !!(main_~i~0 > 2 && main_~j~0 <= 9);main_~j~0 := 1 + main_~j~0; 298#L19-2 [2020-10-20 06:34:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 2 times [2020-10-20 06:34:04,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:04,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432666271] [2020-10-20 06:34:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432666271] [2020-10-20 06:34:04,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761677367] [2020-10-20 06:34:04,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:34:04,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:34:04,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:34:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:34:04,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:34:04,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760072783] [2020-10-20 06:34:04,401 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:34:04,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,401 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-10-20 06:34:04,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:04,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605843823] [2020-10-20 06:34:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:04,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:04,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:04,411 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:04,424 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:04,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:04,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:04,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:04,424 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:04,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:04,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:04,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration4_Loop [2020-10-20 06:34:04,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:04,425 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:04,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:04,481 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:04,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:04,484 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:04,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:04,545 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:04,546 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:04,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:04,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:04,546 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:04,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:04,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:04,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:04,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wcet2.c_Iteration4_Loop [2020-10-20 06:34:04,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:04,547 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:04,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:04,600 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:04,600 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:04,614 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 [2020-10-20 06:34:04,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:04,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:04,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:04,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:04,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:04,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:04,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,625 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:04,632 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:04,632 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:04,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:04,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:04,635 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:04,635 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 19 Supporting invariants [] [2020-10-20 06:34:04,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,686 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,687 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 [2020-10-20 06:34:04,687 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:04,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 43 transitions. Complement of second has 5 states. [2020-10-20 06:34:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:34:04,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:04,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,700 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,739 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,740 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 [2020-10-20 06:34:04,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:04,775 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 43 transitions. Complement of second has 5 states. [2020-10-20 06:34:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:34:04,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:04,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,778 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:04,816 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:04,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:04,816 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 [2020-10-20 06:34:04,817 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:04,837 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 25 states and 34 transitions. Complement of second has 4 states. [2020-10-20 06:34:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:34:04,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:04,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2020-10-20 06:34:04,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:34:04,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:04,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 34 transitions. [2020-10-20 06:34:04,842 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:04,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2020-10-20 06:34:04,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:04,843 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:04,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:04,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:04,845 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:04,845 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:04,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:04,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:34:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:34:04,846 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-10-20 06:34:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:04,847 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:34:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:34:04,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:34:04,847 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:04,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:34:04,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:04,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:04,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:04,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:04,848 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:04,849 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:04,849 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:04,849 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:34:04,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:04,849 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:04,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:04,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:04 BoogieIcfgContainer [2020-10-20 06:34:04,855 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:04,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:04,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:04,856 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:04,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:01" (3/4) ... [2020-10-20 06:34:04,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:04,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:04,863 INFO L168 Benchmark]: Toolchain (without parser) took 3944.36 ms. Allocated memory was 39.8 MB in the beginning and 51.4 MB in the end (delta: 11.5 MB). Free memory was 18.3 MB in the beginning and 23.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,864 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.2 MB in the end (delta: 41.8 kB). Peak memory consumption was 41.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.71 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 18.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.26 ms. Allocated memory is still 40.9 MB. Free memory was 18.7 MB in the beginning and 17.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,867 INFO L168 Benchmark]: Boogie Preprocessor took 19.68 ms. Allocated memory is still 40.9 MB. Free memory was 17.3 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,868 INFO L168 Benchmark]: RCFGBuilder took 231.38 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 16.0 MB in the beginning and 21.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,868 INFO L168 Benchmark]: BuchiAutomizer took 3388.24 ms. Allocated memory was 42.5 MB in the beginning and 51.4 MB in the end (delta: 8.9 MB). Free memory was 21.5 MB in the beginning and 23.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,869 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 51.4 MB. Free memory was 23.9 MB in the beginning and 23.5 MB in the end (delta: 476.3 kB). Peak memory consumption was 476.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:04,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.2 MB in the end (delta: 41.8 kB). Peak memory consumption was 41.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 252.71 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 18.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.26 ms. Allocated memory is still 40.9 MB. Free memory was 18.7 MB in the beginning and 17.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.68 ms. Allocated memory is still 40.9 MB. Free memory was 17.3 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 231.38 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 16.0 MB in the beginning and 21.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3388.24 ms. Allocated memory was 42.5 MB in the beginning and 51.4 MB in the end (delta: 8.9 MB). Free memory was 21.5 MB in the beginning and 23.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.95 ms. Allocated memory is still 51.4 MB. Free memory was 23.9 MB in the beginning and 23.5 MB in the end (delta: 476.3 kB). Peak memory consumption was 476.3 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 5 and consists of 6 locations. One deterministic module has affine ranking function -2 * i + 7 and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 19 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 19 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 2.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 38 SDtfs, 38 SDslu, 13 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf98 lsp39 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp94 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...