./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.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/loops/string_true-unreach-call_true-termination.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 e655d34f6b59f7cc9a55d4dc4dc525a41685abad ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 10:51:44,618 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 10:51:44,619 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 10:51:44,631 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 10:51:44,632 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 10:51:44,633 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 10:51:44,634 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 10:51:44,636 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 10:51:44,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 10:51:44,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 10:51:44,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 10:51:44,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 10:51:44,642 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 10:51:44,643 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 10:51:44,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 10:51:44,645 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 10:51:44,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 10:51:44,648 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 10:51:44,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 10:51:44,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 10:51:44,653 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 10:51:44,654 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 10:51:44,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 10:51:44,658 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 10:51:44,658 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 10:51:44,659 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 10:51:44,661 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 10:51:44,661 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 10:51:44,662 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 10:51:44,664 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 10:51:44,664 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 10:51:44,665 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 10:51:44,666 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 10:51:44,666 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 10:51:44,667 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 10:51:44,668 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 10:51:44,669 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 10:51:44,688 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 10:51:44,689 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 10:51:44,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 10:51:44,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 10:51:44,690 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 10:51:44,691 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 10:51:44,691 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 10:51:44,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 10:51:44,691 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 10:51:44,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 10:51:44,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 10:51:44,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 10:51:44,694 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 10:51:44,694 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 10:51:44,695 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 10:51:44,695 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 10:51:44,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 10:51:44,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 10:51:44,695 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 10:51:44,695 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 10:51:44,696 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 10:51:44,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 10:51:44,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 10:51:44,697 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 -> e655d34f6b59f7cc9a55d4dc4dc525a41685abad [2019-01-12 10:51:44,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 10:51:44,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 10:51:44,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 10:51:44,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 10:51:44,758 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 10:51:44,760 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i [2019-01-12 10:51:44,814 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642916e8a/aa1eec97106448d19c9bd40da0d6ec9a/FLAG5f7759db3 [2019-01-12 10:51:45,210 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 10:51:45,211 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/string_true-unreach-call_true-termination.i [2019-01-12 10:51:45,216 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642916e8a/aa1eec97106448d19c9bd40da0d6ec9a/FLAG5f7759db3 [2019-01-12 10:51:45,586 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642916e8a/aa1eec97106448d19c9bd40da0d6ec9a [2019-01-12 10:51:45,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 10:51:45,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 10:51:45,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 10:51:45,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 10:51:45,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 10:51:45,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16747353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45, skipping insertion in model container [2019-01-12 10:51:45,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 10:51:45,637 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 10:51:45,866 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:51:45,870 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 10:51:45,896 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:51:45,914 INFO L195 MainTranslator]: Completed translation [2019-01-12 10:51:45,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45 WrapperNode [2019-01-12 10:51:45,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 10:51:45,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 10:51:45,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 10:51:45,916 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 10:51:45,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 10:51:45,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 10:51:45,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 10:51:45,964 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 10:51:45,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (1/1) ... [2019-01-12 10:51:45,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 10:51:45,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 10:51:45,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 10:51:45,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 10:51:45,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (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 [2019-01-12 10:51:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-12 10:51:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 10:51:46,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 10:51:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 10:51:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 10:51:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 10:51:46,562 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 10:51:46,563 INFO L286 CfgBuilder]: Removed 11 assue(true) statements. [2019-01-12 10:51:46,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:51:46 BoogieIcfgContainer [2019-01-12 10:51:46,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 10:51:46,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 10:51:46,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 10:51:46,568 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 10:51:46,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 10:51:45" (1/3) ... [2019-01-12 10:51:46,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bb5100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:51:46, skipping insertion in model container [2019-01-12 10:51:46,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:51:45" (2/3) ... [2019-01-12 10:51:46,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bb5100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:51:46, skipping insertion in model container [2019-01-12 10:51:46,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:51:46" (3/3) ... [2019-01-12 10:51:46,572 INFO L112 eAbstractionObserver]: Analyzing ICFG string_true-unreach-call_true-termination.i [2019-01-12 10:51:46,582 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 10:51:46,589 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 10:51:46,604 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 10:51:46,632 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 10:51:46,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 10:51:46,633 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 10:51:46,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 10:51:46,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 10:51:46,633 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 10:51:46,633 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 10:51:46,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 10:51:46,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 10:51:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-01-12 10:51:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-12 10:51:46,655 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:51:46,656 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:51:46,658 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:51:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:51:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash 374782792, now seen corresponding path program 1 times [2019-01-12 10:51:46,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:51:46,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:51:46,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:46,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:51:46,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:51:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 10:51:46,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:51:46,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 10:51:46,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 10:51:46,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 10:51:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:51:46,803 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-01-12 10:51:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:51:46,821 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2019-01-12 10:51:46,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 10:51:46,823 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-01-12 10:51:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:51:46,834 INFO L225 Difference]: With dead ends: 48 [2019-01-12 10:51:46,834 INFO L226 Difference]: Without dead ends: 22 [2019-01-12 10:51:46,837 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:51:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-12 10:51:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-01-12 10:51:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-12 10:51:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-01-12 10:51:46,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2019-01-12 10:51:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:51:46,877 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-01-12 10:51:46,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 10:51:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-01-12 10:51:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 10:51:46,878 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:51:46,879 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:51:46,879 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:51:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:51:46,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1602331574, now seen corresponding path program 1 times [2019-01-12 10:51:46,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:51:46,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:51:46,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:46,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:51:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:51:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 10:51:46,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:51:46,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 10:51:46,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 10:51:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 10:51:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 10:51:47,001 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 3 states. [2019-01-12 10:51:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:51:47,238 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-01-12 10:51:47,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 10:51:47,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-01-12 10:51:47,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:51:47,241 INFO L225 Difference]: With dead ends: 50 [2019-01-12 10:51:47,241 INFO L226 Difference]: Without dead ends: 32 [2019-01-12 10:51:47,242 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 [2019-01-12 10:51:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-01-12 10:51:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2019-01-12 10:51:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-12 10:51:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-01-12 10:51:47,248 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2019-01-12 10:51:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:51:47,248 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-01-12 10:51:47,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 10:51:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-01-12 10:51:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-12 10:51:47,249 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:51:47,249 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:51:47,250 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:51:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:51:47,250 INFO L82 PathProgramCache]: Analyzing trace with hash 177830358, now seen corresponding path program 1 times [2019-01-12 10:51:47,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:51:47,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:51:47,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:47,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:51:47,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:51:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-12 10:51:47,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 10:51:47,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-12 10:51:47,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:51:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:51:47,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 10:51:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-12 10:51:47,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 10:51:47,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-01-12 10:51:47,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 10:51:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 10:51:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:51:47,497 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 5 states. [2019-01-12 10:51:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:51:47,808 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2019-01-12 10:51:47,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 10:51:47,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-01-12 10:51:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:51:47,810 INFO L225 Difference]: With dead ends: 61 [2019-01-12 10:51:47,811 INFO L226 Difference]: Without dead ends: 42 [2019-01-12 10:51:47,811 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:51:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-01-12 10:51:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-01-12 10:51:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-12 10:51:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-01-12 10:51:47,818 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-01-12 10:51:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:51:47,819 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-01-12 10:51:47,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 10:51:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-01-12 10:51:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-01-12 10:51:47,820 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:51:47,821 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:51:47,821 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:51:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:51:47,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1590720246, now seen corresponding path program 2 times [2019-01-12 10:51:47,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:51:47,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:51:47,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:47,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:51:47,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:51:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:51:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-01-12 10:51:47,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 10:51:47,954 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-12 10:51:47,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-12 10:51:48,006 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-01-12 10:51:48,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-12 10:51:48,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 10:51:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-01-12 10:51:48,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-12 10:51:48,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-01-12 10:51:48,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-12 10:51:48,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-12 10:51:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-01-12 10:51:48,121 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 8 states. [2019-01-12 10:51:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:51:48,552 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2019-01-12 10:51:48,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-01-12 10:51:48,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-01-12 10:51:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:51:48,553 INFO L225 Difference]: With dead ends: 71 [2019-01-12 10:51:48,554 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 10:51:48,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-01-12 10:51:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 10:51:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 10:51:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 10:51:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 10:51:48,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-01-12 10:51:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:51:48,557 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 10:51:48,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-12 10:51:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 10:51:48,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 10:51:48,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 10:51:48,585 INFO L448 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-01-12 10:51:48,586 INFO L451 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: true [2019-01-12 10:51:48,586 INFO L448 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-01-12 10:51:48,586 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-01-12 10:51:48,587 INFO L451 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: true [2019-01-12 10:51:48,587 INFO L448 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-01-12 10:51:48,587 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 10:51:48,587 INFO L448 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-01-12 10:51:48,587 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 10:51:48,587 INFO L451 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: true [2019-01-12 10:51:48,587 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 10:51:48,588 INFO L448 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-01-12 10:51:48,588 INFO L448 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-01-12 10:51:48,588 INFO L451 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: true [2019-01-12 10:51:48,588 INFO L451 ceAbstractionStarter]: At program point L57(lines 14 58) the Hoare annotation is: true [2019-01-12 10:51:48,588 INFO L448 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-01-12 10:51:48,588 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-01-12 10:51:48,588 INFO L451 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: true [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-01-12 10:51:48,589 INFO L451 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-01-12 10:51:48,589 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-01-12 10:51:48,590 INFO L448 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-01-12 10:51:48,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 10:51:48 BoogieIcfgContainer [2019-01-12 10:51:48,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 10:51:48,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 10:51:48,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 10:51:48,596 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 10:51:48,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:51:46" (3/4) ... [2019-01-12 10:51:48,600 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 10:51:48,613 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-01-12 10:51:48,614 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 10:51:48,614 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 10:51:48,680 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 10:51:48,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 10:51:48,681 INFO L168 Benchmark]: Toolchain (without parser) took 3088.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -61.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,682 INFO L168 Benchmark]: CDTParser took 0.37 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. [2019-01-12 10:51:48,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.21 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.26 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,684 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:51:48,685 INFO L168 Benchmark]: RCFGBuilder took 570.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,685 INFO L168 Benchmark]: TraceAbstraction took 2030.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.1 MB). Peak memory consumption was 92.1 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,686 INFO L168 Benchmark]: Witness Printer took 84.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-12 10:51:48,690 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 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 320.21 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 48.26 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.43 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 570.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2030.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.1 MB). Peak memory consumption was 92.1 MB. Max. memory is 11.5 GB. * Witness Printer took 84.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 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: 6]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 85 SDtfs, 53 SDslu, 99 SDs, 0 SdLazy, 130 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, 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, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 24 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3682 SizeOfPredicates, 6 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 14/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...