./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/mutex_lock_int_true-termination.c_true-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: 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 /storage/repos/svcomp/c/ldv-regression/mutex_lock_int_true-termination.c_true-unreach-call_1.i -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 893a1dbd0a599f9a69d980cdd7a0c124f8071b90 ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:47:47,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:47:47,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:47:47,665 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:47:47,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:47:47,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:47:47,668 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:47:47,670 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:47:47,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:47:47,672 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:47:47,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:47:47,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:47:47,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:47:47,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:47:47,676 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:47:47,677 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:47:47,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:47:47,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:47:47,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:47:47,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:47:47,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:47:47,685 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:47:47,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:47:47,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:47:47,689 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:47:47,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:47:47,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:47:47,691 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:47:47,692 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:47:47,693 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:47:47,694 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:47:47,694 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:47:47,695 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:47:47,695 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:47:47,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:47:47,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:47:47,697 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:47:47,711 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:47:47,712 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:47:47,713 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:47:47,713 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:47:47,713 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:47:47,714 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:47:47,714 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:47:47,714 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:47:47,714 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:47:47,714 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:47:47,715 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:47:47,716 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:47:47,716 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:47:47,716 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:47:47,716 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:47:47,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:47:47,717 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:47:47,717 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:47:47,717 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:47:47,717 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:47:47,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:47:47,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:47:47,718 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 893a1dbd0a599f9a69d980cdd7a0c124f8071b90 [2019-01-14 15:47:47,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:47:47,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:47:47,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:47:47,794 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:47:47,794 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:47:47,795 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/mutex_lock_int_true-termination.c_true-unreach-call_1.i [2019-01-14 15:47:47,860 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7533d9b/4305a59cc8dc47dab61cbef4c85eebf1/FLAGaf6a4764f [2019-01-14 15:47:48,299 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:47:48,300 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/mutex_lock_int_true-termination.c_true-unreach-call_1.i [2019-01-14 15:47:48,306 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7533d9b/4305a59cc8dc47dab61cbef4c85eebf1/FLAGaf6a4764f [2019-01-14 15:47:48,681 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7533d9b/4305a59cc8dc47dab61cbef4c85eebf1 [2019-01-14 15:47:48,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:47:48,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:47:48,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:47:48,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:47:48,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:47:48,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:47:48" (1/1) ... [2019-01-14 15:47:48,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707b848b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:48, skipping insertion in model container [2019-01-14 15:47:48,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:47:48" (1/1) ... [2019-01-14 15:47:48,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:47:48,726 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:47:48,953 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:47:48,970 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:47:48,990 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:47:49,014 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:47:49,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49 WrapperNode [2019-01-14 15:47:49,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:47:49,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:47:49,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:47:49,016 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:47:49,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:47:49,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:47:49,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:47:49,066 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:47:49,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (1/1) ... [2019-01-14 15:47:49,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:47:49,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:47:49,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:47:49,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:47:49,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (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 [2019-01-14 15:47:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:47:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:47:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:47:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:47:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 15:47:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 15:47:49,520 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:47:49,521 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. [2019-01-14 15:47:49,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:49 BoogieIcfgContainer [2019-01-14 15:47:49,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:47:49,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:47:49,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:47:49,527 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:47:49,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:47:48" (1/3) ... [2019-01-14 15:47:49,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329f3aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:47:49, skipping insertion in model container [2019-01-14 15:47:49,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:47:49" (2/3) ... [2019-01-14 15:47:49,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329f3aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:47:49, skipping insertion in model container [2019-01-14 15:47:49,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:49" (3/3) ... [2019-01-14 15:47:49,532 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_int_true-termination.c_true-unreach-call_1.i [2019-01-14 15:47:49,542 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:47:49,552 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-14 15:47:49,569 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-14 15:47:49,599 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:47:49,600 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:47:49,600 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:47:49,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:47:49,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:47:49,601 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:47:49,601 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:47:49,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:47:49,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:47:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-01-14 15:47:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 15:47:49,625 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:47:49,626 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 15:47:49,629 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:47:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:47:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-01-14 15:47:49,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:47:49,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:47:49,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:49,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:49,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:47:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:47:49,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:47:49,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 15:47:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 15:47:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 15:47:49,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 15:47:49,844 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-01-14 15:47:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:47:49,870 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-01-14 15:47:49,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 15:47:49,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-14 15:47:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:47:49,884 INFO L225 Difference]: With dead ends: 25 [2019-01-14 15:47:49,884 INFO L226 Difference]: Without dead ends: 8 [2019-01-14 15:47:49,887 INFO L631 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 [2019-01-14 15:47:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-14 15:47:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-14 15:47:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-14 15:47:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-01-14 15:47:49,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-01-14 15:47:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:47:49,919 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-01-14 15:47:49,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 15:47:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-01-14 15:47:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 15:47:49,920 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:47:49,920 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:47:49,921 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:47:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:47:49,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-01-14 15:47:49,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:47:49,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:47:49,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:49,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:47:49,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:47:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:47:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:47:50,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:47:50,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 15:47:50,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 15:47:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 15:47:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:47:50,033 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 5 states. [2019-01-14 15:47:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:47:50,139 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-01-14 15:47:50,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 15:47:50,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-14 15:47:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:47:50,139 INFO L225 Difference]: With dead ends: 8 [2019-01-14 15:47:50,139 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 15:47:50,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 15:47:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 15:47:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 15:47:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 15:47:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 15:47:50,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-01-14 15:47:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:47:50,144 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 15:47:50,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 15:47:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 15:47:50,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 15:47:50,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 15:47:50,154 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 15:47:50,154 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-01-14 15:47:50,155 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2019-01-14 15:47:50,156 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-01-14 15:47:50,157 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-01-14 15:47:50,157 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-01-14 15:47:50,157 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-01-14 15:47:50,157 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-01-14 15:47:50,158 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-01-14 15:47:50,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:47:50 BoogieIcfgContainer [2019-01-14 15:47:50,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:47:50,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:47:50,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:47:50,163 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:47:50,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:47:49" (3/4) ... [2019-01-14 15:47:50,168 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 15:47:50,180 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-01-14 15:47:50,181 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 15:47:50,181 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 15:47:50,230 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:47:50,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:47:50,231 INFO L168 Benchmark]: Toolchain (without parser) took 1544.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -119.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:50,233 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:50,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.85 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:50,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:50,236 INFO L168 Benchmark]: Boogie Preprocessor took 25.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:47:50,236 INFO L168 Benchmark]: RCFGBuilder took 430.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:50,237 INFO L168 Benchmark]: TraceAbstraction took 638.06 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:47:50,239 INFO L168 Benchmark]: Witness Printer took 67.96 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. [2019-01-14 15:47:50,243 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.85 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 49.64 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 430.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 638.06 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 67.96 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 14]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 3 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...