./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_1b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-simple/nested_1b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1836be5ce35667bc02ed393f2cbc8396b48b5bb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:09:22,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:09:22,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:09:22,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:09:22,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:09:22,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:09:22,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:09:22,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:09:22,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:09:22,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:09:22,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:09:22,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:09:22,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:09:22,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:09:22,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:09:22,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:09:22,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:09:22,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:09:22,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:09:22,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:09:22,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:09:22,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:09:22,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:09:22,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:09:22,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:09:22,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:09:22,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:09:22,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:09:22,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:09:22,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:09:22,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:09:22,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:09:22,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:09:22,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:09:22,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:09:22,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:09:22,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:09:22,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:09:22,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:09:22,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:09:22,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:09:22,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:09:22,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:09:22,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:09:22,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:09:22,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:09:22,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:09:22,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:09:22,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:09:22,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:09:22,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:09:22,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:09:22,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:09:22,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:09:22,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:09:22,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:09:22,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:09:22,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:09:22,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:09:22,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:09:22,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:09:22,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:09:22,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:09:22,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:09:22,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:09:22,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:09:22,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:09:22,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:09:22,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:09:22,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:09:22,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:09:22,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(G ! call(reach_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1836be5ce35667bc02ed393f2cbc8396b48b5bb [2020-10-20 01:09:22,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:09:22,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:09:22,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:09:22,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:09:22,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:09:22,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-simple/nested_1b.c [2020-10-20 01:09:22,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d073cf9e/634fd68c88e34da995b8bab67b2f8476/FLAG38c325f80 [2020-10-20 01:09:23,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:09:23,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-simple/nested_1b.c [2020-10-20 01:09:23,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d073cf9e/634fd68c88e34da995b8bab67b2f8476/FLAG38c325f80 [2020-10-20 01:09:23,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d073cf9e/634fd68c88e34da995b8bab67b2f8476 [2020-10-20 01:09:23,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:09:23,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:09:23,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:09:23,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:09:23,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:09:23,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:09:23" (1/1) ... [2020-10-20 01:09:23,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7930873b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:23, skipping insertion in model container [2020-10-20 01:09:23,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:09:23" (1/1) ... [2020-10-20 01:09:23,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:09:23,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:09:24,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:09:24,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:09:24,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:09:24,073 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:09:24,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24 WrapperNode [2020-10-20 01:09:24,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:09:24,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:09:24,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:09:24,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:09:24,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:09:24,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:09:24,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:09:24,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:09:24,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... [2020-10-20 01:09:24,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:09:24,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:09:24,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:09:24,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:09:24,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:09:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:09:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:09:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:09:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:09:24,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:09:24,470 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 01:09:24,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:24 BoogieIcfgContainer [2020-10-20 01:09:24,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:09:24,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:09:24,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:09:24,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:09:24,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:09:23" (1/3) ... [2020-10-20 01:09:24,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d051158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:09:24, skipping insertion in model container [2020-10-20 01:09:24,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:09:24" (2/3) ... [2020-10-20 01:09:24,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d051158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:09:24, skipping insertion in model container [2020-10-20 01:09:24,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:24" (3/3) ... [2020-10-20 01:09:24,480 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1b.c [2020-10-20 01:09:24,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:09:24,499 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:09:24,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:09:24,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:09:24,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:09:24,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:09:24,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:09:24,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:09:24,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:09:24,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:09:24,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:09:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 01:09:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 01:09:24,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:24,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 01:09:24,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash 28696998, now seen corresponding path program 1 times [2020-10-20 01:09:24,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:24,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638898836] [2020-10-20 01:09:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:24,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638898836] [2020-10-20 01:09:24,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:09:24,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:09:24,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987285575] [2020-10-20 01:09:24,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:09:24,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:24,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:09:24,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:09:24,746 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-10-20 01:09:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:24,790 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-10-20 01:09:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:09:24,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 01:09:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:24,812 INFO L225 Difference]: With dead ends: 20 [2020-10-20 01:09:24,813 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 01:09:24,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:09:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 01:09:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-10-20 01:09:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 01:09:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-20 01:09:24,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-10-20 01:09:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:24,865 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-20 01:09:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:09:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-20 01:09:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 01:09:24,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:24,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:09:24,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:09:24,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1809669604, now seen corresponding path program 1 times [2020-10-20 01:09:24,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:24,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148500294] [2020-10-20 01:09:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:24,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148500294] [2020-10-20 01:09:24,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104586121] [2020-10-20 01:09:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:24,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 01:09:24,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:25,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:25,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 01:09:25,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200000639] [2020-10-20 01:09:25,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:09:25,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:25,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:09:25,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:09:25,043 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-10-20 01:09:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:25,071 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-20 01:09:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:09:25,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 01:09:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:25,073 INFO L225 Difference]: With dead ends: 14 [2020-10-20 01:09:25,073 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 01:09:25,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:09:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 01:09:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-20 01:09:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 01:09:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 01:09:25,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-10-20 01:09:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:25,079 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 01:09:25,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:09:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 01:09:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 01:09:25,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:25,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-20 01:09:25,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:09:25,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:25,282 INFO L82 PathProgramCache]: Analyzing trace with hash -367607134, now seen corresponding path program 2 times [2020-10-20 01:09:25,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:25,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298671654] [2020-10-20 01:09:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:25,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298671654] [2020-10-20 01:09:25,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999737101] [2020-10-20 01:09:25,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:25,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:09:25,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:09:25,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 01:09:25,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:25,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:25,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 01:09:25,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57819760] [2020-10-20 01:09:25,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:09:25,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:09:25,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:09:25,428 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2020-10-20 01:09:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:25,452 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 01:09:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:09:25,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 01:09:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:25,454 INFO L225 Difference]: With dead ends: 16 [2020-10-20 01:09:25,454 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 01:09:25,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:09:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 01:09:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 01:09:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 01:09:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 01:09:25,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-10-20 01:09:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:25,459 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 01:09:25,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:09:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 01:09:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:09:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:25,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2020-10-20 01:09:25,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:25,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:25,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1081479200, now seen corresponding path program 3 times [2020-10-20 01:09:25,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:25,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182093119] [2020-10-20 01:09:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:25,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182093119] [2020-10-20 01:09:25,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782753238] [2020-10-20 01:09:25,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:25,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 01:09:25,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:09:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 01:09:25,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:25,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:25,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 01:09:25,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278008637] [2020-10-20 01:09:25,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:09:25,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:09:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:09:25,872 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2020-10-20 01:09:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:25,923 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 01:09:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:09:25,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-20 01:09:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:25,925 INFO L225 Difference]: With dead ends: 18 [2020-10-20 01:09:25,925 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 01:09:25,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:09:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 01:09:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-20 01:09:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 01:09:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-20 01:09:25,935 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-10-20 01:09:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:25,936 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-20 01:09:25,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:09:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-20 01:09:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 01:09:25,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:25,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2020-10-20 01:09:26,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:26,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash 82232734, now seen corresponding path program 4 times [2020-10-20 01:09:26,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:26,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279111670] [2020-10-20 01:09:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:26,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279111670] [2020-10-20 01:09:26,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245845031] [2020-10-20 01:09:26,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:26,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 01:09:26,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:09:26,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:09:26,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:26,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-20 01:09:26,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722136082] [2020-10-20 01:09:26,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:09:26,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:26,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:09:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:09:26,332 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-10-20 01:09:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:26,380 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 01:09:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:09:26,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-20 01:09:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:26,381 INFO L225 Difference]: With dead ends: 20 [2020-10-20 01:09:26,382 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 01:09:26,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:09:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 01:09:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-20 01:09:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 01:09:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 01:09:26,387 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-20 01:09:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:26,387 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 01:09:26,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:09:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 01:09:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 01:09:26,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:26,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2020-10-20 01:09:26,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:26,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1717904348, now seen corresponding path program 5 times [2020-10-20 01:09:26,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:26,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813656499] [2020-10-20 01:09:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:09:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813656499] [2020-10-20 01:09:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892686415] [2020-10-20 01:09:26,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:09:26,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 01:09:26,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:09:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 01:09:26,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:09:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:09:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:09:26,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-20 01:09:26,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205009518] [2020-10-20 01:09:26,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 01:09:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:09:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 01:09:26,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:09:26,760 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-20 01:09:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:09:26,793 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-20 01:09:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:09:26,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-20 01:09:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:09:26,794 INFO L225 Difference]: With dead ends: 21 [2020-10-20 01:09:26,794 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 01:09:26,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:09:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 01:09:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 01:09:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 01:09:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-20 01:09:26,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-20 01:09:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:09:26,799 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-20 01:09:26,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 01:09:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-20 01:09:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:09:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:09:26,800 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2020-10-20 01:09:27,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 01:09:27,012 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:09:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:09:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1640295066, now seen corresponding path program 6 times [2020-10-20 01:09:27,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:09:27,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988431080] [2020-10-20 01:09:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:09:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:09:27,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:09:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:09:27,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:09:27,087 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:09:27,087 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:09:27,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:09:27,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:09:27 BoogieIcfgContainer [2020-10-20 01:09:27,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:09:27,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:09:27,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:09:27,118 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:09:27,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:09:24" (3/4) ... [2020-10-20 01:09:27,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:09:27,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:09:27,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:09:27,171 INFO L168 Benchmark]: Toolchain (without parser) took 3471.52 ms. Allocated memory was 35.7 MB in the beginning and 53.5 MB in the end (delta: 17.8 MB). Free memory was 9.6 MB in the beginning and 33.5 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:09:27,172 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 35.1 MB. Free memory is still 14.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:09:27,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.19 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.7 MB in the beginning and 28.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 44.6 MB. Free memory was 28.0 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,174 INFO L168 Benchmark]: Boogie Preprocessor took 38.27 ms. Allocated memory is still 44.6 MB. Free memory was 26.4 MB in the beginning and 25.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,175 INFO L168 Benchmark]: RCFGBuilder took 310.94 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 25.1 MB in the beginning and 28.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,179 INFO L168 Benchmark]: TraceAbstraction took 2644.09 ms. Allocated memory was 47.2 MB in the beginning and 53.5 MB in the end (delta: 6.3 MB). Free memory was 28.0 MB in the beginning and 35.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,180 INFO L168 Benchmark]: Witness Printer took 51.36 ms. Allocated memory is still 53.5 MB. Free memory was 35.9 MB in the beginning and 33.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:09:27,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 35.1 MB. Free memory is still 14.4 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 369.19 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.7 MB in the beginning and 28.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 44.6 MB. Free memory was 28.0 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.27 ms. Allocated memory is still 44.6 MB. Free memory was 26.4 MB in the beginning and 25.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 310.94 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 25.1 MB in the beginning and 28.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2644.09 ms. Allocated memory was 47.2 MB in the beginning and 53.5 MB in the end (delta: 6.3 MB). Free memory was 28.0 MB in the beginning and 35.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 14.3 GB. * Witness Printer took 51.36 ms. Allocated memory is still 53.5 MB. Free memory was 35.9 MB in the beginning and 33.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND TRUE a < 6 [L19] ++a [L19] COND FALSE !(a < 6) [L22] COND TRUE a == 6 [L13] __assert_fail("0", "nested_1b.c", 13, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 21 SDslu, 45 SDs, 0 SdLazy, 98 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 2664 SizeOfPredicates, 5 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/110 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...