./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91fda61e05234dbe68b069d372f5d4b0bb73b229 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-30 16:09:01,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-30 16:09:01,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-30 16:09:01,398 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-30 16:09:01,398 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-30 16:09:01,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-30 16:09:01,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-30 16:09:01,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-30 16:09:01,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-30 16:09:01,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-30 16:09:01,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-30 16:09:01,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-30 16:09:01,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-30 16:09:01,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-30 16:09:01,410 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-30 16:09:01,411 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-30 16:09:01,412 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-30 16:09:01,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-30 16:09:01,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-30 16:09:01,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-30 16:09:01,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-30 16:09:01,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-30 16:09:01,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-30 16:09:01,423 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-30 16:09:01,423 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-30 16:09:01,425 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-30 16:09:01,426 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-30 16:09:01,427 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-30 16:09:01,427 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-30 16:09:01,429 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-30 16:09:01,429 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-30 16:09:01,430 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-30 16:09:01,430 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-30 16:09:01,430 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-30 16:09:01,431 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-30 16:09:01,432 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-30 16:09:01,432 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-30 16:09:01,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-30 16:09:01,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-30 16:09:01,467 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-30 16:09:01,467 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-30 16:09:01,467 INFO L133 SettingsManager]: * Use SBE=true [2018-12-30 16:09:01,467 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-30 16:09:01,467 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-30 16:09:01,467 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-30 16:09:01,468 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-30 16:09:01,469 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-30 16:09:01,470 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-30 16:09:01,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-30 16:09:01,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-30 16:09:01,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-30 16:09:01,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-30 16:09:01,470 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-30 16:09:01,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-30 16:09:01,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-30 16:09:01,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-30 16:09:01,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-30 16:09:01,472 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-30 16:09:01,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-30 16:09:01,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-30 16:09:01,473 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 -> 91fda61e05234dbe68b069d372f5d4b0bb73b229 [2018-12-30 16:09:01,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-30 16:09:01,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-30 16:09:01,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-30 16:09:01,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-30 16:09:01,553 INFO L276 PluginConnector]: CDTParser initialized [2018-12-30 16:09:01,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-12-30 16:09:01,630 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89794b50/c73e2dedecaf48658e2a9782832b48fc/FLAG050cd6e9a [2018-12-30 16:09:02,117 INFO L307 CDTParser]: Found 1 translation units. [2018-12-30 16:09:02,118 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-12-30 16:09:02,125 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89794b50/c73e2dedecaf48658e2a9782832b48fc/FLAG050cd6e9a [2018-12-30 16:09:02,463 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89794b50/c73e2dedecaf48658e2a9782832b48fc [2018-12-30 16:09:02,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-30 16:09:02,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-30 16:09:02,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-30 16:09:02,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-30 16:09:02,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-30 16:09:02,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8c1856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02, skipping insertion in model container [2018-12-30 16:09:02,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-30 16:09:02,515 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-30 16:09:02,724 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 16:09:02,729 INFO L191 MainTranslator]: Completed pre-run [2018-12-30 16:09:02,750 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 16:09:02,768 INFO L195 MainTranslator]: Completed translation [2018-12-30 16:09:02,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02 WrapperNode [2018-12-30 16:09:02,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-30 16:09:02,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-30 16:09:02,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-30 16:09:02,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-30 16:09:02,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-30 16:09:02,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-30 16:09:02,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-30 16:09:02,814 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-30 16:09:02,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (1/1) ... [2018-12-30 16:09:02,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-30 16:09:02,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-30 16:09:02,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-30 16:09:02,846 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-30 16:09:02,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (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 [2018-12-30 16:09:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-30 16:09:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-30 16:09:03,353 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-30 16:09:03,354 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-30 16:09:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:09:03 BoogieIcfgContainer [2018-12-30 16:09:03,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-30 16:09:03,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-30 16:09:03,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-30 16:09:03,360 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-30 16:09:03,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.12 04:09:02" (1/3) ... [2018-12-30 16:09:03,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553ee370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 04:09:03, skipping insertion in model container [2018-12-30 16:09:03,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:09:02" (2/3) ... [2018-12-30 16:09:03,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553ee370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 04:09:03, skipping insertion in model container [2018-12-30 16:09:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:09:03" (3/3) ... [2018-12-30 16:09:03,365 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-12-30 16:09:03,376 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-30 16:09:03,389 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-30 16:09:03,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-30 16:09:03,443 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-30 16:09:03,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-30 16:09:03,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-30 16:09:03,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-30 16:09:03,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-30 16:09:03,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-30 16:09:03,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-30 16:09:03,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-30 16:09:03,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-30 16:09:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-30 16:09:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-30 16:09:03,470 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:03,471 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-30 16:09:03,474 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash 963424, now seen corresponding path program 1 times [2018-12-30 16:09:03,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:03,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:03,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:03,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:09:03,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:03,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-30 16:09:03,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:03,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:03,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:03,640 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-12-30 16:09:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:03,804 INFO L93 Difference]: Finished difference Result 65 states and 110 transitions. [2018-12-30 16:09:03,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:03,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-30 16:09:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:03,823 INFO L225 Difference]: With dead ends: 65 [2018-12-30 16:09:03,823 INFO L226 Difference]: Without dead ends: 35 [2018-12-30 16:09:03,828 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-30 16:09:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-30 16:09:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-30 16:09:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2018-12-30 16:09:03,879 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 4 [2018-12-30 16:09:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:03,880 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2018-12-30 16:09:03,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2018-12-30 16:09:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-30 16:09:03,881 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:03,882 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:09:03,882 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash -775387731, now seen corresponding path program 1 times [2018-12-30 16:09:03,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:03,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:03,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:03,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:03,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:09:03,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:03,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:09:03,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:03,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:03,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:03,965 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand 3 states. [2018-12-30 16:09:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:04,149 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2018-12-30 16:09:04,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:04,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-30 16:09:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:04,152 INFO L225 Difference]: With dead ends: 83 [2018-12-30 16:09:04,152 INFO L226 Difference]: Without dead ends: 49 [2018-12-30 16:09:04,155 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 [2018-12-30 16:09:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-30 16:09:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-12-30 16:09:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-30 16:09:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2018-12-30 16:09:04,174 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 9 [2018-12-30 16:09:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:04,174 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2018-12-30 16:09:04,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2018-12-30 16:09:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-30 16:09:04,175 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:04,176 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:09:04,176 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash -775328149, now seen corresponding path program 1 times [2018-12-30 16:09:04,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:04,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:04,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:04,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:09:04,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:04,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:09:04,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:04,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:04,211 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 3 states. [2018-12-30 16:09:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:04,386 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2018-12-30 16:09:04,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:04,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-30 16:09:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:04,389 INFO L225 Difference]: With dead ends: 89 [2018-12-30 16:09:04,389 INFO L226 Difference]: Without dead ends: 66 [2018-12-30 16:09:04,391 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 [2018-12-30 16:09:04,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-12-30 16:09:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-12-30 16:09:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-12-30 16:09:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2018-12-30 16:09:04,403 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 9 [2018-12-30 16:09:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:04,403 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2018-12-30 16:09:04,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2018-12-30 16:09:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-30 16:09:04,405 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:04,405 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:09:04,405 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash -966830088, now seen corresponding path program 1 times [2018-12-30 16:09:04,407 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:04,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:04,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:04,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-30 16:09:04,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:04,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:09:04,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:04,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:04,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:04,488 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand 3 states. [2018-12-30 16:09:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:04,640 INFO L93 Difference]: Finished difference Result 133 states and 183 transitions. [2018-12-30 16:09:04,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:04,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-30 16:09:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:04,643 INFO L225 Difference]: With dead ends: 133 [2018-12-30 16:09:04,643 INFO L226 Difference]: Without dead ends: 89 [2018-12-30 16:09:04,643 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 [2018-12-30 16:09:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-12-30 16:09:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2018-12-30 16:09:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-12-30 16:09:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2018-12-30 16:09:04,658 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 16 [2018-12-30 16:09:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:04,659 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2018-12-30 16:09:04,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2018-12-30 16:09:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-30 16:09:04,660 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:04,660 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:09:04,660 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:04,661 INFO L82 PathProgramCache]: Analyzing trace with hash -782905388, now seen corresponding path program 1 times [2018-12-30 16:09:04,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:04,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:04,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:04,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-30 16:09:04,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:04,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:09:04,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:04,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:04,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:04,702 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 3 states. [2018-12-30 16:09:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:04,801 INFO L93 Difference]: Finished difference Result 177 states and 241 transitions. [2018-12-30 16:09:04,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:04,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-30 16:09:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:04,803 INFO L225 Difference]: With dead ends: 177 [2018-12-30 16:09:04,803 INFO L226 Difference]: Without dead ends: 72 [2018-12-30 16:09:04,804 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 [2018-12-30 16:09:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-30 16:09:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2018-12-30 16:09:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-12-30 16:09:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2018-12-30 16:09:04,825 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 19 [2018-12-30 16:09:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:04,825 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2018-12-30 16:09:04,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2018-12-30 16:09:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-30 16:09:04,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:09:04,831 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:09:04,832 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:09:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:09:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1830460977, now seen corresponding path program 1 times [2018-12-30 16:09:04,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:09:04,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:09:04,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:09:04,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:09:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:09:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-30 16:09:04,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:09:04,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:09:04,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:09:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:09:04,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:09:04,891 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 3 states. [2018-12-30 16:09:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:09:04,919 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-12-30 16:09:04,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:09:04,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-12-30 16:09:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:09:04,921 INFO L225 Difference]: With dead ends: 120 [2018-12-30 16:09:04,921 INFO L226 Difference]: Without dead ends: 0 [2018-12-30 16:09:04,922 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 [2018-12-30 16:09:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-30 16:09:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-30 16:09:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-30 16:09:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-30 16:09:04,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-12-30 16:09:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:09:04,923 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-30 16:09:04,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:09:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-30 16:09:04,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-30 16:09:04,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-30 16:09:05,168 WARN L181 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-12-30 16:09:05,297 INFO L444 ceAbstractionStarter]: At program point L97(lines 9 141) the Hoare annotation is: false [2018-12-30 16:09:05,297 INFO L444 ceAbstractionStarter]: At program point L31(lines 30 125) the Hoare annotation is: (<= ULTIMATE.start_main_~blastFlag~0 2) [2018-12-30 16:09:05,297 INFO L448 ceAbstractionStarter]: For program point L93-1(lines 54 107) no Hoare annotation was computed. [2018-12-30 16:09:05,297 INFO L448 ceAbstractionStarter]: For program point L89-1(lines 54 107) no Hoare annotation was computed. [2018-12-30 16:09:05,297 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-12-30 16:09:05,297 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 54 107) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L451 ceAbstractionStarter]: At program point L140(lines 9 141) the Hoare annotation is: true [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point L70(lines 70 74) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 128) no Hoare annotation was computed. [2018-12-30 16:09:05,298 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 54 107) no Hoare annotation was computed. [2018-12-30 16:09:05,299 INFO L448 ceAbstractionStarter]: For program point L50(lines 50 109) no Hoare annotation was computed. [2018-12-30 16:09:05,299 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 111) no Hoare annotation was computed. [2018-12-30 16:09:05,299 INFO L451 ceAbstractionStarter]: At program point L137(lines 9 141) the Hoare annotation is: true [2018-12-30 16:09:05,299 INFO L444 ceAbstractionStarter]: At program point L100(lines 18 135) the Hoare annotation is: (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and (<= ULTIMATE.start_main_~blastFlag~0 3) (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2018-12-30 16:09:05,299 INFO L448 ceAbstractionStarter]: For program point L96(lines 96 98) no Hoare annotation was computed. [2018-12-30 16:09:05,299 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 125) no Hoare annotation was computed. [2018-12-30 16:09:05,300 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2018-12-30 16:09:05,300 INFO L444 ceAbstractionStarter]: At program point L26(lines 25 128) the Hoare annotation is: (<= ULTIMATE.start_main_~blastFlag~0 2) [2018-12-30 16:09:05,300 INFO L444 ceAbstractionStarter]: At program point L51(lines 50 109) the Hoare annotation is: (let ((.cse0 (<= 8656 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (<= ULTIMATE.start_main_~blastFlag~0 3) (not (= ULTIMATE.start_main_~s__hit~0 0))))) [2018-12-30 16:09:05,300 INFO L444 ceAbstractionStarter]: At program point L47(lines 46 111) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and (<= ULTIMATE.start_main_~blastFlag~0 2) .cse0) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))))) [2018-12-30 16:09:05,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.12 04:09:05 BoogieIcfgContainer [2018-12-30 16:09:05,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-30 16:09:05,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-30 16:09:05,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-30 16:09:05,317 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-30 16:09:05,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:09:03" (3/4) ... [2018-12-30 16:09:05,322 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-30 16:09:05,333 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-30 16:09:05,334 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-30 16:09:05,392 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-30 16:09:05,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-30 16:09:05,394 INFO L168 Benchmark]: Toolchain (without parser) took 2925.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 947.3 MB in the beginning and 1.0 GB in the end (delta: -86.9 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. [2018-12-30 16:09:05,395 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 16:09:05,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.82 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-30 16:09:05,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.50 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 16:09:05,396 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-30 16:09:05,397 INFO L168 Benchmark]: RCFGBuilder took 508.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-30 16:09:05,398 INFO L168 Benchmark]: TraceAbstraction took 1960.07 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: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2018-12-30 16:09:05,399 INFO L168 Benchmark]: Witness Printer took 76.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 16:09:05,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.82 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 44.50 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 508.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1960.07 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: 85.8 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. * Witness Printer took 76.33 ms. Allocated memory is still 1.2 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: 139]: 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: 30]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (8656 <= s__state && blastFlag <= 2) || ((8656 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: blastFlag <= 2 || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 159 SDtfs, 93 SDslu, 84 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 62 HoareAnnotationTreeSize, 8 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 3566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...