./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/trex03_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/trex03_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 8b8fb82fd886dd019eb017cf0c82ba4eddc31046 ................................................................................................................................................................................................................................................................................................ 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 17:06:43,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:06:43,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:06:43,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:06:43,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:06:43,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:06:43,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:06:43,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:06:43,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:06:43,568 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:06:43,569 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:06:43,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:06:43,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:06:43,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:06:43,580 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:06:43,581 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:06:43,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:06:43,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:06:43,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:06:43,590 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:06:43,591 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:06:43,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:06:43,596 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:06:43,597 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:06:43,597 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:06:43,597 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:06:43,600 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:06:43,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:06:43,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:06:43,604 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:06:43,604 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:06:43,606 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:06:43,606 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:06:43,606 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:06:43,608 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:06:43,609 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:06:43,609 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:06:43,636 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:06:43,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:06:43,638 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:06:43,639 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:06:43,639 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:06:43,639 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:06:43,639 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:06:43,640 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:06:43,641 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:06:43,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:06:43,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:06:43,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:06:43,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:06:43,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:06:43,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:06:43,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:06:43,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:06:43,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:06:43,646 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:06:43,646 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:06:43,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:06:43,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:06:43,647 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 -> 8b8fb82fd886dd019eb017cf0c82ba4eddc31046 [2019-01-14 17:06:43,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:06:43,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:06:43,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:06:43,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:06:43,716 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:06:43,717 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/trex03_true-unreach-call_true-termination.i [2019-01-14 17:06:43,780 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5b14fa4/d077caa8ce404261a62a8c9f881e7839/FLAG3cdcd6483 [2019-01-14 17:06:44,251 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:06:44,252 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/trex03_true-unreach-call_true-termination.i [2019-01-14 17:06:44,258 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5b14fa4/d077caa8ce404261a62a8c9f881e7839/FLAG3cdcd6483 [2019-01-14 17:06:44,606 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5b14fa4/d077caa8ce404261a62a8c9f881e7839 [2019-01-14 17:06:44,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:06:44,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:06:44,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:06:44,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:06:44,615 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:06:44,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4bc483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44, skipping insertion in model container [2019-01-14 17:06:44,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:06:44,649 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:06:44,849 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:06:44,853 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:06:44,869 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:06:44,881 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:06:44,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44 WrapperNode [2019-01-14 17:06:44,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:06:44,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:06:44,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:06:44,883 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:06:44,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:06:44,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:06:44,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:06:44,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:06:44,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (1/1) ... [2019-01-14 17:06:44,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:06:44,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:06:44,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:06:44,942 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:06:44,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (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 17:06:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:06:45,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:06:45,302 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:06:45,303 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 17:06:45,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:06:45 BoogieIcfgContainer [2019-01-14 17:06:45,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:06:45,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:06:45,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:06:45,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:06:45,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:06:44" (1/3) ... [2019-01-14 17:06:45,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8869de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:06:45, skipping insertion in model container [2019-01-14 17:06:45,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:06:44" (2/3) ... [2019-01-14 17:06:45,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8869de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:06:45, skipping insertion in model container [2019-01-14 17:06:45,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:06:45" (3/3) ... [2019-01-14 17:06:45,311 INFO L112 eAbstractionObserver]: Analyzing ICFG trex03_true-unreach-call_true-termination.i [2019-01-14 17:06:45,320 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:06:45,328 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:06:45,342 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:06:45,372 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:06:45,373 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:06:45,373 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:06:45,373 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:06:45,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:06:45,374 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:06:45,374 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:06:45,374 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:06:45,374 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:06:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-01-14 17:06:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:06:45,394 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:06:45,395 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:06:45,402 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:06:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:06:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash 30293572, now seen corresponding path program 1 times [2019-01-14 17:06:45,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:06:45,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:06:45,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:06:45,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:06:45,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:06:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:06:45,501 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 17:06:45,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:06:45,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:06:45,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 17:06:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 17:06:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 17:06:45,519 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-01-14 17:06:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:06:45,535 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-01-14 17:06:45,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 17:06:45,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-01-14 17:06:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:06:45,547 INFO L225 Difference]: With dead ends: 21 [2019-01-14 17:06:45,548 INFO L226 Difference]: Without dead ends: 9 [2019-01-14 17:06:45,551 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 [2019-01-14 17:06:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-14 17:06:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-14 17:06:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 17:06:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-01-14 17:06:45,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-01-14 17:06:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:06:45,579 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-14 17:06:45,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 17:06:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-01-14 17:06:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:06:45,580 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:06:45,580 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:06:45,580 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:06:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:06:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 29816916, now seen corresponding path program 1 times [2019-01-14 17:06:45,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:06:45,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:06:45,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:06:45,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:06:45,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:06:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:06:45,798 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 17:06:45,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:06:45,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 17:06:45,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:06:45,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:06:45,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:06:45,802 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2019-01-14 17:06:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:06:45,903 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-01-14 17:06:45,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:06:45,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-14 17:06:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:06:45,904 INFO L225 Difference]: With dead ends: 9 [2019-01-14 17:06:45,904 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 17:06:45,905 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:06:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 17:06:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 17:06:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 17:06:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 17:06:45,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-01-14 17:06:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:06:45,908 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 17:06:45,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:06:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 17:06:45,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 17:06:45,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 17:06:45,925 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 17:06:45,925 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-01-14 17:06:45,925 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2019-01-14 17:06:45,926 INFO L451 ceAbstractionStarter]: At program point L15-2(lines 15 22) the Hoare annotation is: true [2019-01-14 17:06:45,926 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 15 22) no Hoare annotation was computed. [2019-01-14 17:06:45,926 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2019-01-14 17:06:45,926 INFO L451 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: true [2019-01-14 17:06:45,926 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 17:06:45,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 17:06:45,927 INFO L451 ceAbstractionStarter]: At program point L24(lines 10 25) the Hoare annotation is: true [2019-01-14 17:06:45,927 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-01-14 17:06:45,927 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 17 19) no Hoare annotation was computed. [2019-01-14 17:06:45,927 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-01-14 17:06:45,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:06:45 BoogieIcfgContainer [2019-01-14 17:06:45,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:06:45,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:06:45,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:06:45,933 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:06:45,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:06:45" (3/4) ... [2019-01-14 17:06:45,939 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 17:06:45,950 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-14 17:06:45,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 17:06:46,005 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:06:46,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:06:46,006 INFO L168 Benchmark]: Toolchain (without parser) took 1396.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -97.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:06:46,009 INFO L168 Benchmark]: CDTParser took 0.11 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 17:06:46,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.08 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 17:06:46,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.41 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 17:06:46,011 INFO L168 Benchmark]: Boogie Preprocessor took 21.39 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 17:06:46,011 INFO L168 Benchmark]: RCFGBuilder took 362.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -135.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-14 17:06:46,012 INFO L168 Benchmark]: TraceAbstraction took 627.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-01-14 17:06:46,013 INFO L168 Benchmark]: Witness Printer took 72.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:06:46,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 271.08 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 36.41 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 21.39 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 362.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -135.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 627.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 72.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 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...