./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/WhileSingle.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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-restricted-15/WhileSingle.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 d930bfd65ed5d5f664b4fae9868151a005b1916b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:43:13,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:43:13,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:43:13,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:43:13,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:43:13,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:43:13,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:43:13,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:43:13,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:43:13,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:43:13,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:43:13,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:43:13,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:43:13,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:43:13,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:43:13,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:43:13,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:43:13,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:43:13,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:43:13,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:43:13,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:43:13,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:43:13,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:43:13,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:43:13,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:43:13,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:43:13,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:43:13,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:43:13,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:43:13,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:43:13,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:43:13,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:43:13,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:43:13,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:43:13,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:43:13,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:43:13,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:43:13,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:43:13,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:43:13,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:43:13,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:43:13,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:43:13,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:43:13,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:43:13,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:43:13,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:43:13,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:43:13,605 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:43:13,606 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:43:13,606 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:43:13,606 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:43:13,607 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:43:13,607 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:43:13,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:43:13,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:43:13,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:43:13,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:43:13,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:43:13,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:43:13,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:43:13,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:43:13,609 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:43:13,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:43:13,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:43:13,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:43:13,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:43:13,611 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:43:13,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:43:13,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:43:13,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:43:13,612 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:43:13,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:43:13,613 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 -> d930bfd65ed5d5f664b4fae9868151a005b1916b [2020-10-19 18:43:13,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:43:13,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:43:13,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:43:13,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:43:13,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:43:13,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/WhileSingle.c [2020-10-19 18:43:14,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb93390aa/67afb793b418480184f556f6cd6513b5/FLAG94c71dee8 [2020-10-19 18:43:14,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:43:14,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/WhileSingle.c [2020-10-19 18:43:14,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb93390aa/67afb793b418480184f556f6cd6513b5/FLAG94c71dee8 [2020-10-19 18:43:14,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb93390aa/67afb793b418480184f556f6cd6513b5 [2020-10-19 18:43:14,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:43:14,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:43:14,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:43:14,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:43:14,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:43:14,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:43:14" (1/1) ... [2020-10-19 18:43:14,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca3a691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:14, skipping insertion in model container [2020-10-19 18:43:14,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:43:14" (1/1) ... [2020-10-19 18:43:14,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:43:14,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:43:15,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:43:15,152 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:43:15,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:43:15,184 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:43:15,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15 WrapperNode [2020-10-19 18:43:15,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:43:15,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:43:15,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:43:15,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:43:15,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:43:15,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:43:15,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:43:15,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:43:15,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (1/1) ... [2020-10-19 18:43:15,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:43:15,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:43:15,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:43:15,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:43:15,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (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 [2020-10-19 18:43:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:43:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:43:15,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:43:15,588 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:43:15,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:15 BoogieIcfgContainer [2020-10-19 18:43:15,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:43:15,590 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:43:15,590 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:43:15,596 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:43:15,597 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:15,598 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:43:14" (1/3) ... [2020-10-19 18:43:15,599 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45c4ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:43:15, skipping insertion in model container [2020-10-19 18:43:15,600 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:15,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:15" (2/3) ... [2020-10-19 18:43:15,601 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45c4ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:43:15, skipping insertion in model container [2020-10-19 18:43:15,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:15,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:15" (3/3) ... [2020-10-19 18:43:15,603 INFO L373 chiAutomizerObserver]: Analyzing ICFG WhileSingle.c [2020-10-19 18:43:15,659 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:43:15,659 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:43:15,659 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:43:15,659 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:43:15,660 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:43:15,660 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:43:15,660 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:43:15,660 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:43:15,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:43:15,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:43:15,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:15,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:15,711 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:43:15,711 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:43:15,712 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:43:15,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:43:15,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:43:15,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:15,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:15,714 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:43:15,714 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:43:15,723 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2020-10-19 18:43:15,724 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 10); 4#L10true assume 3 != main_~i~0;main_~i~0 := 1 + main_~i~0; 8#L10-2true [2020-10-19 18:43:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:43:15,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716214276] [2020-10-19 18:43:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,861 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-19 18:43:15,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986053197] [2020-10-19 18:43:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,881 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,884 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-19 18:43:15,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689585276] [2020-10-19 18:43:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:16,051 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:16,052 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:16,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:16,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:16,053 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:16,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,053 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:16,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:16,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: WhileSingle.c_Iteration1_Loop [2020-10-19 18:43:16,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:16,055 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:16,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:16,244 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) [2020-10-19 18:43:16,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:16,252 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:16,264 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) [2020-10-19 18:43:16,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:16,322 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:16,336 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) [2020-10-19 18:43:16,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:16,386 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 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) [2020-10-19 18:43:16,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:16,442 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,482 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:16,484 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:16,484 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:16,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:16,485 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:16,485 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:16,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:16,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:16,485 INFO L133 ssoRankerPreferences]: Filename of dumped script: WhileSingle.c_Iteration1_Loop [2020-10-19 18:43:16,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:16,486 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:16,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,592 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:16,598 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2020-10-19 18:43:16,616 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 [2020-10-19 18:43:16,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:16,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:16,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:16,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:16,625 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:16,626 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:43:16,632 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 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 [2020-10-19 18:43:16,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:43:16,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:16,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:16,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:16,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:16,674 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:16,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:43:16,680 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) [2020-10-19 18:43:16,722 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 [2020-10-19 18:43:16,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:16,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:16,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:16,726 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:43:16,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:16,729 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 18:43:16,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,734 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:16,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:16,739 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) [2020-10-19 18:43:16,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:16,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:16,745 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:16,746 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,781 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,855 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,894 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 [2020-10-19 18:43:16,896 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-19 18:43:16,969 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2020-10-19 18:43:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:43:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-19 18:43:16,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-19 18:43:16,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-19 18:43:16,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-19 18:43:16,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-10-19 18:43:16,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:43:16,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2020-10-19 18:43:17,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-19 18:43:17,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-19 18:43:17,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-19 18:43:17,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:17,002 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-19 18:43:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-19 18:43:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-19 18:43:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-19 18:43:17,034 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:43:17,034 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:43:17,034 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:43:17,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-19 18:43:17,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:43:17,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:17,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:17,036 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:43:17,037 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:43:17,037 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L10-2 assume !!(main_~i~0 < 10); 63#L10 [2020-10-19 18:43:17,037 INFO L796 eck$LassoCheckResult]: Loop: 63#L10 assume !(3 != main_~i~0); 64#L10-2 assume !!(main_~i~0 < 10); 63#L10 [2020-10-19 18:43:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-19 18:43:17,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:17,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482742411] [2020-10-19 18:43:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,053 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-19 18:43:17,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:17,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060325456] [2020-10-19 18:43:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-10-19 18:43:17,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:17,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708190353] [2020-10-19 18:43:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:17,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:43:17 BoogieIcfgContainer [2020-10-19 18:43:17,146 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:43:17,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:43:17,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:43:17,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:43:17,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:15" (3/4) ... [2020-10-19 18:43:17,155 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:43:17,201 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:43:17,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:43:17,204 INFO L168 Benchmark]: Toolchain (without parser) took 2309.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 960.0 MB in the beginning and 1.0 GB in the end (delta: -41.9 MB). Peak memory consumption was 110.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,205 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:43:17,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:43:17,208 INFO L168 Benchmark]: Boogie Preprocessor took 125.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,209 INFO L168 Benchmark]: RCFGBuilder took 241.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,210 INFO L168 Benchmark]: BuchiAutomizer took 1555.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,210 INFO L168 Benchmark]: Witness Printer took 53.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:17,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 125.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1555.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. * Witness Printer took 53.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 19 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp100 dnf165 smp92 tf105 neg94 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d2db3e3=0, \result=0, i=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 10 Loop: [L10] COND FALSE !(i != 3) [L9] COND TRUE i < 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...