./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_1.5.800.v20200727-1323.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/NO_04.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 8d3fb7268073fcc251f9902f5b4913f30f169781 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:26:24,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:26:24,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:26:24,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:26:24,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:26:24,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:26:24,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:26:24,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:26:24,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:26:24,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:26:24,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:26:24,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:26:24,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:26:24,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:26:24,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:26:24,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:26:24,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:26:24,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:26:24,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:26:24,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:26:24,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:26:24,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:26:24,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:26:24,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:26:24,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:26:24,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:26:24,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:26:24,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:26:24,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:26:24,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:26:24,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:26:24,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:26:24,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:26:24,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:26:24,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:26:24,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:26:24,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:26:24,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:26:24,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:26:24,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:26:24,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:26:24,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:26:24,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:26:24,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:26:24,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:26:24,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:26:24,277 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:26:24,277 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:26:24,277 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:26:24,277 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:26:24,277 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:26:24,278 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:26:24,278 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:26:24,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:26:24,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:26:24,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:26:24,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:26:24,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:26:24,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:26:24,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:26:24,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:26:24,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:26:24,281 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:26:24,281 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3fb7268073fcc251f9902f5b4913f30f169781 [2021-07-06 18:26:24,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:26:24,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:26:24,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:26:24,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:26:24,523 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:26:24,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-07-06 18:26:24,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1beab011/afef5281c78348368ffe5bcbfe353ef5/FLAG344a2c32f [2021-07-06 18:26:24,936 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:26:24,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-07-06 18:26:24,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1beab011/afef5281c78348368ffe5bcbfe353ef5/FLAG344a2c32f [2021-07-06 18:26:24,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1beab011/afef5281c78348368ffe5bcbfe353ef5 [2021-07-06 18:26:24,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:26:24,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:26:24,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:26:24,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:26:24,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:26:24,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:26:24" (1/1) ... [2021-07-06 18:26:24,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f81d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:24, skipping insertion in model container [2021-07-06 18:26:24,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:26:24" (1/1) ... [2021-07-06 18:26:24,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:26:24,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:26:25,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:26:25,055 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:26:25,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:26:25,071 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:26:25,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25 WrapperNode [2021-07-06 18:26:25,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:26:25,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:26:25,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:26:25,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:26:25,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:26:25,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:26:25,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:26:25,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:26:25,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:26:25,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:26:25,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:26:25,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:26:25,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (1/1) ... [2021-07-06 18:26:25,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:25,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:25,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 18:26:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:26:25,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:26:25,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:26:25,368 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-06 18:26:25,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:25 BoogieIcfgContainer [2021-07-06 18:26:25,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:26:25,370 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:26:25,370 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:26:25,372 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:26:25,373 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:25,373 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:26:24" (1/3) ... [2021-07-06 18:26:25,374 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f48697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:26:25, skipping insertion in model container [2021-07-06 18:26:25,374 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:25,374 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:25" (2/3) ... [2021-07-06 18:26:25,374 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f48697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:26:25, skipping insertion in model container [2021-07-06 18:26:25,375 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:25,375 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:25" (3/3) ... [2021-07-06 18:26:25,376 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-07-06 18:26:25,420 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:26:25,420 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:26:25,420 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:26:25,420 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:26:25,420 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:26:25,421 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:26:25,421 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:26:25,421 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:26:25,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:25,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-07-06 18:26:25,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:25,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:25,442 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:25,442 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:26:25,442 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:26:25,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:25,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-07-06 18:26:25,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:25,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:25,444 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:25,444 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:26:25,448 INFO L791 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 15#L15-2true [2021-07-06 18:26:25,449 INFO L793 eck$LassoCheckResult]: Loop: 15#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 5#L18-2true assume !(main_~j~0 < main_~a~0); 3#L18-3true main_~i~0 := 1 + main_~i~0; 15#L15-2true [2021-07-06 18:26:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:26:25,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:25,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524401631] [2021-07-06 18:26:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:25,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:25,501 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:25,503 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:25,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:25,514 INFO L82 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2021-07-06 18:26:25,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:25,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432907893] [2021-07-06 18:26:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:25,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:25,526 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:25,529 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:25,530 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2021-07-06 18:26:25,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:25,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62260168] [2021-07-06 18:26:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:25,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:26:25,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:25,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:26:25,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:25,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:25,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:26:25,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62260168] [2021-07-06 18:26:25,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62260168] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:26:25,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:26:25,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 18:26:25,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132644676] [2021-07-06 18:26:25,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:25,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-06 18:26:25,658 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:26:25,664 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:26:25,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:26:25,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:26:25,665 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:26:25,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,665 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:26:25,665 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:26:25,665 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-07-06 18:26:25,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:26:25,666 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:26:25,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:25,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:25,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:25,789 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:26:25,790 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:26:25,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:25,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:25,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:26:25,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:26:25,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-07-06 18:26:25,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:26:25,828 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: [] [2021-07-06 18:26:25,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:25,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:25,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:25,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-07-06 18:26:25,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:26:25,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:26:25,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:26:25,869 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: [] [2021-07-06 18:26:25,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:25,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:25,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:25,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-07-06 18:26:25,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:26:25,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:26:25,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:25,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:25,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:25,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-07-06 18:26:25,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:26:25,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:26:26,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:26:26,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:26,242 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:26:26,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:26:26,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:26:26,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:26:26,243 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:26:26,243 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:26,243 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:26:26,243 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:26:26,243 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-07-06 18:26:26,243 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:26:26,243 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:26:26,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:26,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:26,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:26:26,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:26:26,319 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:26:26,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:26,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:26,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-07-06 18:26:26,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:26:26,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:26:26,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:26:26,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:26:26,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:26:26,335 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:26:26,335 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:26:26,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:26:26,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:26,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:26,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-07-06 18:26:26,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:26:26,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:26:26,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:26:26,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:26:26,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:26:26,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:26:26,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:26:26,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:26:26,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:26,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:26,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:26,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:26,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-07-06 18:26:26,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:26:26,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:26:26,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:26:26,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:26:26,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:26:26,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:26:26,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:26:26,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:26:26,436 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:26:26,441 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:26:26,441 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-07-06 18:26:26,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:26,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:26,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-07-06 18:26:26,446 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:26:26,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:26:26,447 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:26:26,447 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-07-06 18:26:26,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:26,464 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:26:26,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:26,516 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:26:26,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:26:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:26,522 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-06 18:26:26,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:26:26,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 18:26:26,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 18:26:26,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 18:26:26,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 18:26:26,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-06 18:26:26,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:26:26,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 18:26:26,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-06 18:26:26,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:26:26,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:26:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:26,633 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 [2021-07-06 18:26:26,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-07-06 18:26:26,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 60 states and 102 transitions. Complement of second has 9 states. [2021-07-06 18:26:26,705 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 [2021-07-06 18:26:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2021-07-06 18:26:26,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2021-07-06 18:26:26,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:26:26,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2021-07-06 18:26:26,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:26:26,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2021-07-06 18:26:26,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:26:26,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2021-07-06 18:26:26,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-07-06 18:26:26,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2021-07-06 18:26:26,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-07-06 18:26:26,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-07-06 18:26:26,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2021-07-06 18:26:26,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:26:26,716 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-07-06 18:26:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2021-07-06 18:26:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-07-06 18:26:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-07-06 18:26:26,731 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-07-06 18:26:26,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:26:26,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 18:26:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 18:26:26,733 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:26:26,757 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-07-06 18:26:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 18:26:26,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-07-06 18:26:26,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-07-06 18:26:26,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2021-07-06 18:26:26,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-07-06 18:26:26,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-07-06 18:26:26,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-07-06 18:26:26,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:26:26,760 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-07-06 18:26:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-07-06 18:26:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2021-07-06 18:26:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-07-06 18:26:26,761 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-07-06 18:26:26,761 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-07-06 18:26:26,761 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:26:26,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-07-06 18:26:26,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-07-06 18:26:26,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:26,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:26,762 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:26,762 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-07-06 18:26:26,762 INFO L791 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 181#L15-2 [2021-07-06 18:26:26,763 INFO L793 eck$LassoCheckResult]: Loop: 181#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 180#L18-3 main_~i~0 := 1 + main_~i~0; 181#L15-2 [2021-07-06 18:26:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-07-06 18:26:26,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138935067] [2021-07-06 18:26:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,766 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,767 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,768 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2021-07-06 18:26:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925018097] [2021-07-06 18:26:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:26,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 18:26:26,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:26:26,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:26,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:26:26,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925018097] [2021-07-06 18:26:26,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925018097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:26:26,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:26:26,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 18:26:26,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279326678] [2021-07-06 18:26:26,790 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:26:26,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:26:26,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 18:26:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 18:26:26,794 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:26:26,822 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-07-06 18:26:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 18:26:26,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2021-07-06 18:26:26,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-07-06 18:26:26,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2021-07-06 18:26:26,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-07-06 18:26:26,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-07-06 18:26:26,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-07-06 18:26:26,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:26:26,826 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-07-06 18:26:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-07-06 18:26:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-07-06 18:26:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-07-06 18:26:26,828 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-07-06 18:26:26,828 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-07-06 18:26:26,828 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 18:26:26,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-07-06 18:26:26,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-07-06 18:26:26,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:26,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:26,829 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:26,829 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 18:26:26,830 INFO L791 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 218#L15-2 [2021-07-06 18:26:26,830 INFO L793 eck$LassoCheckResult]: Loop: 218#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 223#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 224#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 219#L23-2 assume !(main_~l~0 < main_~b~0); 220#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 226#L20-3 main_~j~0 := 1 + main_~j~0; 227#L18-2 assume !(main_~j~0 < main_~a~0); 217#L18-3 main_~i~0 := 1 + main_~i~0; 218#L15-2 [2021-07-06 18:26:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-07-06 18:26:26,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078964807] [2021-07-06 18:26:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,835 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,837 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2021-07-06 18:26:26,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225228882] [2021-07-06 18:26:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:26,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:26,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 18:26:26,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:26:26,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:26,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:26:26,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225228882] [2021-07-06 18:26:26,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225228882] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:26:26,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:26:26,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 18:26:26,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877032595] [2021-07-06 18:26:26,878 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:26:26,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:26:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 18:26:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 18:26:26,878 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:26:26,911 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-07-06 18:26:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 18:26:26,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-07-06 18:26:26,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-07-06 18:26:26,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2021-07-06 18:26:26,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-07-06 18:26:26,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-07-06 18:26:26,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-07-06 18:26:26,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:26:26,912 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-07-06 18:26:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-07-06 18:26:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-07-06 18:26:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-07-06 18:26:26,914 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-07-06 18:26:26,914 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-07-06 18:26:26,914 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 18:26:26,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-07-06 18:26:26,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-07-06 18:26:26,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:26,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:26,915 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:26,915 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 18:26:26,915 INFO L791 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 253#L15-2 [2021-07-06 18:26:26,915 INFO L793 eck$LassoCheckResult]: Loop: 253#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 257#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 258#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 254#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 255#L25-2 assume !(main_~m~0 >= 0); 259#L25-3 main_~l~0 := 1 + main_~l~0; 260#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 261#L20-3 main_~j~0 := 1 + main_~j~0; 262#L18-2 assume !(main_~j~0 < main_~a~0); 252#L18-3 main_~i~0 := 1 + main_~i~0; 253#L15-2 [2021-07-06 18:26:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-07-06 18:26:26,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846133814] [2021-07-06 18:26:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,918 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,919 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,919 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2021-07-06 18:26:26,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524234678] [2021-07-06 18:26:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:26,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:26,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 18:26:26,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 18:26:26,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:26:26,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:26,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:26:26,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524234678] [2021-07-06 18:26:26,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524234678] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:26:26,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:26:26,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 18:26:26,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438642603] [2021-07-06 18:26:26,944 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:26:26,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:26:26,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 18:26:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 18:26:26,945 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:26:26,965 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-07-06 18:26:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 18:26:26,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2021-07-06 18:26:26,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:26:26,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2021-07-06 18:26:26,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-07-06 18:26:26,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-07-06 18:26:26,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2021-07-06 18:26:26,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:26:26,967 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-07-06 18:26:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2021-07-06 18:26:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-07-06 18:26:26,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-07-06 18:26:26,968 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-07-06 18:26:26,968 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-07-06 18:26:26,968 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-07-06 18:26:26,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-07-06 18:26:26,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:26:26,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:26,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:26,968 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-07-06 18:26:26,968 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 18:26:26,969 INFO L791 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 286#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 287#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 288#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 283#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 284#L25-2 [2021-07-06 18:26:26,969 INFO L793 eck$LassoCheckResult]: Loop: 284#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 284#L25-2 [2021-07-06 18:26:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2021-07-06 18:26:26,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740578341] [2021-07-06 18:26:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,974 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,977 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,978 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2021-07-06 18:26:26,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280524795] [2021-07-06 18:26:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,980 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,982 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,982 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2021-07-06 18:26:26,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:26,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6226839] [2021-07-06 18:26:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:26,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,990 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:26,993 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:26,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:26,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:26,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 18:26:27,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:27,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-06 18:26:27,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:26:27 BoogieIcfgContainer [2021-07-06 18:26:27,051 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:26:27,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:26:27,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:26:27,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:26:27,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:25" (3/4) ... [2021-07-06 18:26:27,054 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:26:27,072 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:26:27,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:26:27,073 INFO L168 Benchmark]: Toolchain (without parser) took 2118.63 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 49.1 MB in the beginning and 37.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,073 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:26:27,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.22 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 39.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.63 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 53.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,074 INFO L168 Benchmark]: Boogie Preprocessor took 23.02 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 52.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:26:27,074 INFO L168 Benchmark]: RCFGBuilder took 220.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 42.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,075 INFO L168 Benchmark]: BuchiAutomizer took 1681.21 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.8 MB in the beginning and 39.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,075 INFO L168 Benchmark]: Witness Printer took 20.66 ms. Allocated memory is still 83.9 MB. Free memory was 39.0 MB in the beginning and 37.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:27,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 116.22 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 39.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.63 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 53.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.02 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 52.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 220.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 42.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1681.21 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.8 MB in the beginning and 39.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 20.66 ms. Allocated memory is still 83.9 MB. Free memory was 39.0 MB in the beginning and 37.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 12.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 94 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf96 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: 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 {a=2, \result=0, b=7, m=1003, l=0, i=0, k=3, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 18:26:27,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...