./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-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/loop-acceleration/phases_false-unreach-call2_false-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 64bcaa7dcfb14b395c299a14aa5941fba1dc63cc .......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 11:03:59,393 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 11:03:59,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 11:03:59,411 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 11:03:59,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 11:03:59,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 11:03:59,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 11:03:59,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 11:03:59,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 11:03:59,418 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 11:03:59,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 11:03:59,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 11:03:59,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 11:03:59,423 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 11:03:59,424 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 11:03:59,425 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 11:03:59,426 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 11:03:59,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 11:03:59,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 11:03:59,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 11:03:59,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 11:03:59,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 11:03:59,437 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 11:03:59,438 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 11:03:59,438 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 11:03:59,439 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 11:03:59,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 11:03:59,441 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 11:03:59,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 11:03:59,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 11:03:59,444 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 11:03:59,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 11:03:59,445 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 11:03:59,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 11:03:59,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 11:03:59,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 11:03:59,448 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 11:03:59,467 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 11:03:59,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 11:03:59,469 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 11:03:59,469 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 11:03:59,470 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 11:03:59,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 11:03:59,473 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 11:03:59,474 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 11:03:59,475 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 11:03:59,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 11:03:59,475 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 11:03:59,475 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 11:03:59,475 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 11:03:59,475 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 11:03:59,476 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 11:03:59,476 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 11:03:59,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 11:03:59,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 11:03:59,476 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 11:03:59,477 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 11:03:59,477 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 11:03:59,477 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 11:03:59,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 11:03:59,477 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 -> 64bcaa7dcfb14b395c299a14aa5941fba1dc63cc [2019-01-12 11:03:59,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 11:03:59,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 11:03:59,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 11:03:59,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 11:03:59,558 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 11:03:59,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-termination.i [2019-01-12 11:03:59,622 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ba76351/c8b416198ca54bed83e715a5a3a3fa33/FLAG55a1c0348 [2019-01-12 11:04:00,047 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 11:04:00,048 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/phases_false-unreach-call2_false-termination.i [2019-01-12 11:04:00,054 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ba76351/c8b416198ca54bed83e715a5a3a3fa33/FLAG55a1c0348 [2019-01-12 11:04:00,420 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ba76351/c8b416198ca54bed83e715a5a3a3fa33 [2019-01-12 11:04:00,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 11:04:00,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 11:04:00,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 11:04:00,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 11:04:00,432 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 11:04:00,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104d3319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00, skipping insertion in model container [2019-01-12 11:04:00,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 11:04:00,465 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 11:04:00,637 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:04:00,642 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 11:04:00,659 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:04:00,678 INFO L195 MainTranslator]: Completed translation [2019-01-12 11:04:00,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00 WrapperNode [2019-01-12 11:04:00,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 11:04:00,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 11:04:00,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 11:04:00,683 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 11:04:00,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 11:04:00,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 11:04:00,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 11:04:00,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 11:04:00,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (1/1) ... [2019-01-12 11:04:00,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 11:04:00,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 11:04:00,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 11:04:00,760 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 11:04:00,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (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 11:04:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 11:04:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 11:04:01,152 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 11:04:01,153 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 11:04:01,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:04:01 BoogieIcfgContainer [2019-01-12 11:04:01,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 11:04:01,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 11:04:01,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 11:04:01,159 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 11:04:01,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 11:04:00" (1/3) ... [2019-01-12 11:04:01,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cee5d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:04:01, skipping insertion in model container [2019-01-12 11:04:01,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:04:00" (2/3) ... [2019-01-12 11:04:01,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cee5d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:04:01, skipping insertion in model container [2019-01-12 11:04:01,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:04:01" (3/3) ... [2019-01-12 11:04:01,164 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_false-unreach-call2_false-termination.i [2019-01-12 11:04:01,172 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 11:04:01,179 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 11:04:01,193 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 11:04:01,223 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 11:04:01,224 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 11:04:01,224 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 11:04:01,224 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 11:04:01,224 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 11:04:01,225 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 11:04:01,225 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 11:04:01,225 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 11:04:01,225 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 11:04:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-01-12 11:04:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 11:04:01,245 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:04:01,247 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 11:04:01,251 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:04:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:04:01,259 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-01-12 11:04:01,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:04:01,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:04:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:04:01,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:04:01,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:04:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:04:01,358 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 11:04:01,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 11:04:01,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 11:04:01,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 11:04:01,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 11:04:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 11:04:01,383 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-01-12 11:04:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:04:01,398 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-01-12 11:04:01,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 11:04:01,400 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-01-12 11:04:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:04:01,410 INFO L225 Difference]: With dead ends: 18 [2019-01-12 11:04:01,410 INFO L226 Difference]: Without dead ends: 8 [2019-01-12 11:04:01,415 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 11:04:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-12 11:04:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-12 11:04:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-12 11:04:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-01-12 11:04:01,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-01-12 11:04:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:04:01,446 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-01-12 11:04:01,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 11:04:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-01-12 11:04:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 11:04:01,447 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:04:01,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 11:04:01,447 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:04:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:04:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash 922086164, now seen corresponding path program 1 times [2019-01-12 11:04:01,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:04:01,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:04:01,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:04:01,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:04:01,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:04:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 11:04:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 11:04:01,501 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 11:04:01,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 11:04:01 BoogieIcfgContainer [2019-01-12 11:04:01,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 11:04:01,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 11:04:01,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 11:04:01,520 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 11:04:01,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:04:01" (3/4) ... [2019-01-12 11:04:01,522 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 11:04:01,567 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 11:04:01,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 11:04:01,568 INFO L168 Benchmark]: Toolchain (without parser) took 1143.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:04:01,571 INFO L168 Benchmark]: CDTParser took 0.15 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 11:04:01,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.48 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 11:04:01,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:04:01,576 INFO L168 Benchmark]: Boogie Preprocessor took 35.78 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:04:01,576 INFO L168 Benchmark]: RCFGBuilder took 395.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-12 11:04:01,578 INFO L168 Benchmark]: TraceAbstraction took 363.66 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-01-12 11:04:01,578 INFO L168 Benchmark]: Witness Printer took 48.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:04:01,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 254.48 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 40.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.78 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 395.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 363.66 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] unsigned int x = 1; [L12] unsigned int y = __VERIFIER_nondet_uint(); [L13] COND FALSE !(!(y > 0)) [L14] COND FALSE !(x < y) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...