./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/recHanoi03-2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887ada769b510ae5d273618525924110908f2b5f .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:24:19,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:24:19,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:24:19,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:24:19,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:24:19,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:24:19,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:24:19,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:24:19,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:24:19,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:24:19,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:24:19,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:24:19,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:24:19,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:24:19,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:24:19,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:24:19,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:24:19,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:24:19,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:24:19,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:24:19,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:24:19,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:24:19,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:24:19,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:24:19,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:24:19,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:24:19,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:24:19,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:24:19,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:24:19,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:24:19,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:24:19,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:24:19,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:24:19,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:24:19,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:24:19,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:24:19,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:24:19,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:24:19,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:24:19,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:24:19,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:24:19,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:24:19,366 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:24:19,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:24:19,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:24:19,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:24:19,368 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:24:19,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:24:19,369 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:24:19,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:24:19,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:24:19,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:24:19,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:24:19,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:24:19,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:24:19,370 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:24:19,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:24:19,371 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:24:19,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:24:19,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:24:19,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:24:19,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:24:19,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:24:19,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:24:19,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:24:19,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:24:19,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:24:19,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:24:19,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:24:19,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:24:19,374 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(__VERIFIER_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 -> 887ada769b510ae5d273618525924110908f2b5f [2019-11-28 00:24:19,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:24:19,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:24:19,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:24:19,690 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:24:19,690 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:24:19,693 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-28 00:24:19,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff577c0a/165b79163c73406688a894309fbe390b/FLAG9eff7d4ce [2019-11-28 00:24:20,219 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:24:20,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-28 00:24:20,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff577c0a/165b79163c73406688a894309fbe390b/FLAG9eff7d4ce [2019-11-28 00:24:20,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff577c0a/165b79163c73406688a894309fbe390b [2019-11-28 00:24:20,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:24:20,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:24:20,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:24:20,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:24:20,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:24:20,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d217661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20, skipping insertion in model container [2019-11-28 00:24:20,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:24:20,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:24:20,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:24:20,839 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:24:20,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:24:20,870 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:24:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20 WrapperNode [2019-11-28 00:24:20,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:24:20,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:24:20,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:24:20,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:24:20,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:24:20,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:24:20,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:24:20,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:24:20,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (1/1) ... [2019-11-28 00:24:20,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:24:20,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:24:20,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:24:20,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:24:20,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (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 [2019-11-28 00:24:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-11-28 00:24:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-11-28 00:24:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:24:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:24:21,211 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:24:21,212 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 00:24:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:24:21 BoogieIcfgContainer [2019-11-28 00:24:21,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:24:21,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:24:21,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:24:21,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:24:21,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:24:20" (1/3) ... [2019-11-28 00:24:21,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c01c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:24:21, skipping insertion in model container [2019-11-28 00:24:21,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:24:20" (2/3) ... [2019-11-28 00:24:21,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c01c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:24:21, skipping insertion in model container [2019-11-28 00:24:21,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:24:21" (3/3) ... [2019-11-28 00:24:21,220 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-11-28 00:24:21,228 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:24:21,233 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:24:21,245 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:24:21,269 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:24:21,270 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:24:21,270 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:24:21,270 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:24:21,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:24:21,270 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:24:21,270 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:24:21,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:24:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 00:24:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:24:21,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:24:21,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:24:21,291 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:24:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:24:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2032829855, now seen corresponding path program 1 times [2019-11-28 00:24:21,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:24:21,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211665746] [2019-11-28 00:24:21,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:24:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:24:21,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211665746] [2019-11-28 00:24:21,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:24:21,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 00:24:21,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901456396] [2019-11-28 00:24:21,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:24:21,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:24:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:24:21,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:24:21,553 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-28 00:24:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:24:21,702 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-28 00:24:21,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:24:21,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 00:24:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:24:21,715 INFO L225 Difference]: With dead ends: 28 [2019-11-28 00:24:21,716 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 00:24:21,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:24:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 00:24:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 00:24:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 00:24:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-28 00:24:21,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-28 00:24:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:24:21,761 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-28 00:24:21,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:24:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-28 00:24:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:24:21,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:24:21,764 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:24:21,764 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:24:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:24:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1521841779, now seen corresponding path program 1 times [2019-11-28 00:24:21,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:24:21,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233509265] [2019-11-28 00:24:21,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:24:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:24:21,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233509265] [2019-11-28 00:24:21,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837629980] [2019-11-28 00:24:21,976 INFO L94 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 [2019-11-28 00:24:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:22,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 00:24:22,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:24:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:24:22,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:24:22,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-28 00:24:22,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511610914] [2019-11-28 00:24:22,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 00:24:22,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:24:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 00:24:22,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-28 00:24:22,272 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2019-11-28 00:24:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:24:22,422 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-28 00:24:22,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:24:22,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-28 00:24:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:24:22,424 INFO L225 Difference]: With dead ends: 22 [2019-11-28 00:24:22,424 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 00:24:22,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:24:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 00:24:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 00:24:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 00:24:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-28 00:24:22,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2019-11-28 00:24:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:24:22,433 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-28 00:24:22,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 00:24:22,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-28 00:24:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 00:24:22,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:24:22,435 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:24:22,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:24:22,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:24:22,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:24:22,644 INFO L82 PathProgramCache]: Analyzing trace with hash 166885599, now seen corresponding path program 2 times [2019-11-28 00:24:22,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:24:22,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198037591] [2019-11-28 00:24:22,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:24:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 00:24:22,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198037591] [2019-11-28 00:24:22,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246075912] [2019-11-28 00:24:22,882 INFO L92 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 [2019-11-28 00:24:22,930 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:24:22,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:24:22,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 00:24:22,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:24:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-28 00:24:23,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:24:23,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-28 00:24:23,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213085741] [2019-11-28 00:24:23,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 00:24:23,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:24:23,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 00:24:23,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-11-28 00:24:23,230 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 18 states. [2019-11-28 00:24:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:24:23,522 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-28 00:24:23,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 00:24:23,524 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-11-28 00:24:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:24:23,525 INFO L225 Difference]: With dead ends: 30 [2019-11-28 00:24:23,525 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 00:24:23,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2019-11-28 00:24:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 00:24:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 00:24:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 00:24:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-28 00:24:23,540 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2019-11-28 00:24:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:24:23,540 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-28 00:24:23,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 00:24:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-28 00:24:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-28 00:24:23,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:24:23,543 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:24:23,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:24:23,747 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:24:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:24:23,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1033731103, now seen corresponding path program 3 times [2019-11-28 00:24:23,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:24:23,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783955005] [2019-11-28 00:24:23,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:24:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:24:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-28 00:24:24,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783955005] [2019-11-28 00:24:24,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092471220] [2019-11-28 00:24:24,065 INFO L92 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 [2019-11-28 00:24:24,108 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 00:24:24,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:24:24,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 00:24:24,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:24:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-28 00:24:37,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:24:37,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2019-11-28 00:24:37,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127852045] [2019-11-28 00:24:37,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 00:24:37,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:24:37,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 00:24:37,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=575, Unknown=6, NotChecked=0, Total=650 [2019-11-28 00:24:37,418 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2019-11-28 00:24:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:24:47,982 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-11-28 00:24:48,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 00:24:48,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2019-11-28 00:24:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:24:48,029 INFO L225 Difference]: With dead ends: 24 [2019-11-28 00:24:48,029 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:24:48,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=69, Invalid=575, Unknown=6, NotChecked=0, Total=650 [2019-11-28 00:24:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:24:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:24:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:24:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:24:48,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-28 00:24:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:24:48,032 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:24:48,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 00:24:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:24:48,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:24:48,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:24:48,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:24:48,256 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-11-28 00:24:48,257 INFO L246 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2019-11-28 00:24:48,257 INFO L249 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2019-11-28 00:24:48,257 INFO L246 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2019-11-28 00:24:48,257 INFO L242 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2019-11-28 00:24:48,257 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-28 00:24:48,258 INFO L246 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-28 00:24:48,258 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:24:48,258 INFO L246 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2019-11-28 00:24:48,258 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:24:48,258 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2019-11-28 00:24:48,258 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:24:48,259 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-11-28 00:24:48,259 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-11-28 00:24:48,259 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-28 00:24:48,259 INFO L249 CegarLoopResult]: At program point L24(lines 24 35) the Hoare annotation is: true [2019-11-28 00:24:48,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:24:48 BoogieIcfgContainer [2019-11-28 00:24:48,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:24:48,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:24:48,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:24:48,270 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:24:48,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:24:21" (3/4) ... [2019-11-28 00:24:48,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:24:48,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-11-28 00:24:48,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:24:48,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:24:48,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:24:48,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:24:48,333 INFO L168 Benchmark]: Toolchain (without parser) took 27724.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 952.3 MB in the beginning and 816.0 MB in the end (delta: 136.4 MB). Peak memory consumption was 259.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,333 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:24:48,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,336 INFO L168 Benchmark]: Boogie Preprocessor took 17.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,337 INFO L168 Benchmark]: RCFGBuilder took 231.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,338 INFO L168 Benchmark]: TraceAbstraction took 27054.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 816.0 MB in the end (delta: 285.3 MB). Peak memory consumption was 285.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:24:48,338 INFO L168 Benchmark]: Witness Printer took 60.67 ms. Allocated memory is still 1.2 GB. Free memory is still 816.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:24:48,343 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 231.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27054.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 816.0 MB in the end (delta: 285.3 MB). Peak memory consumption was 285.3 MB. Max. memory is 11.5 GB. * Witness Printer took 60.67 ms. Allocated memory is still 1.2 GB. Free memory is still 816.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 26.9s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 20 SDslu, 237 SDs, 0 SdLazy, 294 SolverSat, 8 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 147 ConstructedInterpolants, 18 QuantifiedInterpolants, 22482 SizeOfPredicates, 11 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 96/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...