java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:44:18,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:44:18,367 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:44:18,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:44:18,389 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:44:18,390 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:44:18,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:44:18,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:44:18,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:44:18,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:44:18,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:44:18,400 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:44:18,407 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:44:18,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:44:18,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:44:18,416 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:44:18,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:44:18,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:44:18,424 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:44:18,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:44:18,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:44:18,430 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:44:18,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:44:18,440 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:44:18,454 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:44:18,454 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:44:18,455 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:44:18,455 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:44:18,456 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:44:18,456 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:44:18,456 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:44:18,457 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:44:18,457 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:44:18,457 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:44:18,457 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:44:18,458 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:44:18,458 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:44:18,458 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:44:18,458 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:44:18,458 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:44:18,459 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:44:18,459 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:44:18,459 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:44:18,459 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:44:18,460 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:44:18,460 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:44:18,460 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:44:18,460 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:44:18,460 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:44:18,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:44:18,461 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:44:18,461 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:44:18,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:44:18,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:44:18,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:44:18,546 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:44:18,547 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:44:18,548 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-10-24 16:44:18,616 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52a27ef79/f1be76acc3d044e4ac53b4bcbabc8e07/FLAG00fee4b9a [2018-10-24 16:44:19,387 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:44:19,388 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-10-24 16:44:19,415 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52a27ef79/f1be76acc3d044e4ac53b4bcbabc8e07/FLAG00fee4b9a [2018-10-24 16:44:19,439 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52a27ef79/f1be76acc3d044e4ac53b4bcbabc8e07 [2018-10-24 16:44:19,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:44:19,454 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:44:19,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:19,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:44:19,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:44:19,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:19" (1/1) ... [2018-10-24 16:44:19,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:19, skipping insertion in model container [2018-10-24 16:44:19,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:19" (1/1) ... [2018-10-24 16:44:19,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:44:19,612 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:44:20,537 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:20,542 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:44:20,947 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:20,972 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:44:20,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20 WrapperNode [2018-10-24 16:44:20,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:20,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:20,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:44:20,974 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:44:20,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:21,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:44:21,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:44:21,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:44:21,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... [2018-10-24 16:44:21,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:44:21,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:44:21,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:44:21,903 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:44:21,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:44:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:44:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:44:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:44:32,357 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:44:32,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:32 BoogieIcfgContainer [2018-10-24 16:44:32,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:44:32,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:44:32,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:44:32,363 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:44:32,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:44:19" (1/3) ... [2018-10-24 16:44:32,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147d4fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:32, skipping insertion in model container [2018-10-24 16:44:32,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:20" (2/3) ... [2018-10-24 16:44:32,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147d4fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:32, skipping insertion in model container [2018-10-24 16:44:32,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:32" (3/3) ... [2018-10-24 16:44:32,367 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-10-24 16:44:32,375 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:44:32,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:44:32,401 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:44:32,443 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:44:32,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:44:32,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:44:32,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:44:32,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:44:32,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:44:32,445 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:44:32,445 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:44:32,445 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:44:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:44:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 16:44:32,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:32,500 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:44:32,503 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:32,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:32,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-10-24 16:44:32,512 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:32,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:32,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:32,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:32,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:44:33,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:33,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:33,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:44:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:44:33,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:33,028 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:44:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:44:43,035 INFO L93 Difference]: Finished difference Result 2126 states and 3956 transitions. [2018-10-24 16:44:43,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:44:43,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 16:44:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:44:43,074 INFO L225 Difference]: With dead ends: 2126 [2018-10-24 16:44:43,074 INFO L226 Difference]: Without dead ends: 1528 [2018-10-24 16:44:43,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2018-10-24 16:44:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1048. [2018-10-24 16:44:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2018-10-24 16:44:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1826 transitions. [2018-10-24 16:44:43,201 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1826 transitions. Word has length 62 [2018-10-24 16:44:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:44:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 1048 states and 1826 transitions. [2018-10-24 16:44:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:44:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1826 transitions. [2018-10-24 16:44:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 16:44:43,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:43,213 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:44:43,214 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:43,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash 606696408, now seen corresponding path program 1 times [2018-10-24 16:44:43,214 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:43,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:43,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:44:43,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:43,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:43,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:44:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:44:43,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:43,487 INFO L87 Difference]: Start difference. First operand 1048 states and 1826 transitions. Second operand 4 states. [2018-10-24 16:44:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:44:52,689 INFO L93 Difference]: Finished difference Result 3810 states and 6822 transitions. [2018-10-24 16:44:52,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:44:52,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-24 16:44:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:44:52,706 INFO L225 Difference]: With dead ends: 3810 [2018-10-24 16:44:52,707 INFO L226 Difference]: Without dead ends: 2764 [2018-10-24 16:44:52,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-10-24 16:44:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2018-10-24 16:44:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2018-10-24 16:44:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4043 transitions. [2018-10-24 16:44:52,783 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4043 transitions. Word has length 134 [2018-10-24 16:44:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:44:52,783 INFO L481 AbstractCegarLoop]: Abstraction has 2764 states and 4043 transitions. [2018-10-24 16:44:52,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:44:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4043 transitions. [2018-10-24 16:44:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 16:44:52,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:52,790 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:44:52,791 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:52,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:52,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1990175672, now seen corresponding path program 1 times [2018-10-24 16:44:52,791 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:52,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:52,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:52,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:52,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 16:44:53,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:53,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:53,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:44:53,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:44:53,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:44:53,097 INFO L87 Difference]: Start difference. First operand 2764 states and 4043 transitions. Second operand 3 states. [2018-10-24 16:45:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:00,059 INFO L93 Difference]: Finished difference Result 8084 states and 11872 transitions. [2018-10-24 16:45:00,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:45:00,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-10-24 16:45:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:00,091 INFO L225 Difference]: With dead ends: 8084 [2018-10-24 16:45:00,091 INFO L226 Difference]: Without dead ends: 5322 [2018-10-24 16:45:00,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:45:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2018-10-24 16:45:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5322. [2018-10-24 16:45:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5322 states. [2018-10-24 16:45:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 7506 transitions. [2018-10-24 16:45:00,221 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 7506 transitions. Word has length 218 [2018-10-24 16:45:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:00,343 INFO L481 AbstractCegarLoop]: Abstraction has 5322 states and 7506 transitions. [2018-10-24 16:45:00,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:45:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 7506 transitions. [2018-10-24 16:45:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-24 16:45:00,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:00,352 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:00,352 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:00,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1837451638, now seen corresponding path program 1 times [2018-10-24 16:45:00,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:00,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:00,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:00,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:00,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:00,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:45:00,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:45:00,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:45:00,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:45:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:45:00,777 INFO L87 Difference]: Start difference. First operand 5322 states and 7506 transitions. Second operand 4 states. [2018-10-24 16:45:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:05,553 INFO L93 Difference]: Finished difference Result 11493 states and 16259 transitions. [2018-10-24 16:45:05,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:45:05,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2018-10-24 16:45:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:05,583 INFO L225 Difference]: With dead ends: 11493 [2018-10-24 16:45:05,583 INFO L226 Difference]: Without dead ends: 6173 [2018-10-24 16:45:05,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:45:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6173 states. [2018-10-24 16:45:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6173 to 6173. [2018-10-24 16:45:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6173 states. [2018-10-24 16:45:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6173 states to 6173 states and 7808 transitions. [2018-10-24 16:45:05,705 INFO L78 Accepts]: Start accepts. Automaton has 6173 states and 7808 transitions. Word has length 225 [2018-10-24 16:45:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:05,706 INFO L481 AbstractCegarLoop]: Abstraction has 6173 states and 7808 transitions. [2018-10-24 16:45:05,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:45:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6173 states and 7808 transitions. [2018-10-24 16:45:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 16:45:05,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:05,712 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:05,713 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:05,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash -241982439, now seen corresponding path program 1 times [2018-10-24 16:45:05,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:05,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:05,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:05,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:05,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 260 proven. 71 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 16:45:06,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:06,330 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:06,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:06,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 260 proven. 71 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 16:45:06,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:45:06,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-24 16:45:06,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:45:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:45:06,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:45:06,933 INFO L87 Difference]: Start difference. First operand 6173 states and 7808 transitions. Second operand 5 states. [2018-10-24 16:45:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:18,158 INFO L93 Difference]: Finished difference Result 21329 states and 27065 transitions. [2018-10-24 16:45:18,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:45:18,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2018-10-24 16:45:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:18,214 INFO L225 Difference]: With dead ends: 21329 [2018-10-24 16:45:18,214 INFO L226 Difference]: Without dead ends: 13388 [2018-10-24 16:45:18,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:45:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2018-10-24 16:45:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 11670. [2018-10-24 16:45:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11670 states. [2018-10-24 16:45:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 13334 transitions. [2018-10-24 16:45:18,462 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 13334 transitions. Word has length 289 [2018-10-24 16:45:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:18,463 INFO L481 AbstractCegarLoop]: Abstraction has 11670 states and 13334 transitions. [2018-10-24 16:45:18,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:45:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 13334 transitions. [2018-10-24 16:45:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-24 16:45:18,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:18,471 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:18,471 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:18,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:18,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1305517648, now seen corresponding path program 1 times [2018-10-24 16:45:18,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:18,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:18,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:18,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:18,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:19,069 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 16:45:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 264 proven. 83 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 16:45:19,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:19,429 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:19,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:19,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:19,967 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-10-24 16:45:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 264 proven. 83 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-24 16:45:20,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:45:20,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-10-24 16:45:20,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:45:20,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:45:20,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:45:20,558 INFO L87 Difference]: Start difference. First operand 11670 states and 13334 transitions. Second operand 8 states. [2018-10-24 16:45:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:31,210 INFO L93 Difference]: Finished difference Result 24195 states and 27562 transitions. [2018-10-24 16:45:31,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:45:31,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2018-10-24 16:45:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:31,234 INFO L225 Difference]: With dead ends: 24195 [2018-10-24 16:45:31,234 INFO L226 Difference]: Without dead ends: 12093 [2018-10-24 16:45:31,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:45:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12093 states. [2018-10-24 16:45:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12093 to 12092. [2018-10-24 16:45:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12092 states. [2018-10-24 16:45:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 13765 transitions. [2018-10-24 16:45:31,401 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 13765 transitions. Word has length 325 [2018-10-24 16:45:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:31,402 INFO L481 AbstractCegarLoop]: Abstraction has 12092 states and 13765 transitions. [2018-10-24 16:45:31,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:45:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 13765 transitions. [2018-10-24 16:45:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-24 16:45:31,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:31,408 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:31,408 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:31,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1290586109, now seen corresponding path program 1 times [2018-10-24 16:45:31,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:31,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:31,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:31,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:31,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:32,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:32,177 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:32,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:32,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:46:41,043 WARN L179 SmtUtils]: Spent 57.83 s on a formula simplification. DAG size of input: 1114 DAG size of output: 80 [2018-10-24 16:46:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-24 16:46:45,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:46:45,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-24 16:46:45,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:46:45,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:46:45,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=52, Unknown=2, NotChecked=0, Total=72 [2018-10-24 16:46:45,203 INFO L87 Difference]: Start difference. First operand 12092 states and 13765 transitions. Second operand 9 states. [2018-10-24 16:46:53,742 WARN L179 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-24 16:46:55,574 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2018-10-24 16:47:38,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:38,772 INFO L93 Difference]: Finished difference Result 48075 states and 54602 transitions. [2018-10-24 16:47:38,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:47:38,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2018-10-24 16:47:38,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:38,829 INFO L225 Difference]: With dead ends: 48075 [2018-10-24 16:47:38,829 INFO L226 Difference]: Without dead ends: 30432 [2018-10-24 16:47:38,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 276 SyntacticMatches, 59 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 76.4s TimeCoverageRelationStatistics Valid=62, Invalid=176, Unknown=2, NotChecked=0, Total=240 [2018-10-24 16:47:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30432 states. [2018-10-24 16:47:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30432 to 29978. [2018-10-24 16:47:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29978 states. [2018-10-24 16:47:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29978 states to 29978 states and 32667 transitions. [2018-10-24 16:47:39,197 INFO L78 Accepts]: Start accepts. Automaton has 29978 states and 32667 transitions. Word has length 329 [2018-10-24 16:47:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:39,198 INFO L481 AbstractCegarLoop]: Abstraction has 29978 states and 32667 transitions. [2018-10-24 16:47:39,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:47:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 29978 states and 32667 transitions. [2018-10-24 16:47:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-24 16:47:39,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:39,210 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:47:39,210 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:39,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:39,210 INFO L82 PathProgramCache]: Analyzing trace with hash -228542191, now seen corresponding path program 1 times [2018-10-24 16:47:39,210 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:39,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:39,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:39,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:39,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-24 16:47:39,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:47:39,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:47:39,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:47:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:47:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:47:39,796 INFO L87 Difference]: Start difference. First operand 29978 states and 32667 transitions. Second operand 3 states. [2018-10-24 16:47:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:42,319 INFO L93 Difference]: Finished difference Result 59097 states and 64468 transitions. [2018-10-24 16:47:42,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:47:42,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 434 [2018-10-24 16:47:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:42,370 INFO L225 Difference]: With dead ends: 59097 [2018-10-24 16:47:42,371 INFO L226 Difference]: Without dead ends: 29975 [2018-10-24 16:47:42,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:47:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29975 states. [2018-10-24 16:47:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29975 to 29547. [2018-10-24 16:47:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29547 states. [2018-10-24 16:47:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29547 states to 29547 states and 32149 transitions. [2018-10-24 16:47:42,727 INFO L78 Accepts]: Start accepts. Automaton has 29547 states and 32149 transitions. Word has length 434 [2018-10-24 16:47:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:42,728 INFO L481 AbstractCegarLoop]: Abstraction has 29547 states and 32149 transitions. [2018-10-24 16:47:42,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:47:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 29547 states and 32149 transitions. [2018-10-24 16:47:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-10-24 16:47:42,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:42,749 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:47:42,749 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:42,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:42,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1009950167, now seen corresponding path program 1 times [2018-10-24 16:47:42,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:42,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:42,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:42,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:42,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 530 proven. 404 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 16:47:43,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:47:43,924 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:47:43,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:44,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:47:51,423 WARN L179 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 428 DAG size of output: 134 [2018-10-24 16:47:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 567 proven. 48 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-10-24 16:47:57,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:47:57,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-24 16:47:57,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:47:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:47:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:47:57,892 INFO L87 Difference]: Start difference. First operand 29547 states and 32149 transitions. Second operand 9 states. [2018-10-24 16:48:14,015 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-24 16:48:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:48:23,355 INFO L93 Difference]: Finished difference Result 73636 states and 79722 transitions. [2018-10-24 16:48:23,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:48:23,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-10-24 16:48:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:48:23,427 INFO L225 Difference]: With dead ends: 73636 [2018-10-24 16:48:23,427 INFO L226 Difference]: Without dead ends: 44469 [2018-10-24 16:48:23,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 436 SyntacticMatches, 49 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:48:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44469 states. [2018-10-24 16:48:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44469 to 39761. [2018-10-24 16:48:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39761 states. [2018-10-24 16:48:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39761 states to 39761 states and 42450 transitions. [2018-10-24 16:48:24,179 INFO L78 Accepts]: Start accepts. Automaton has 39761 states and 42450 transitions. Word has length 481 [2018-10-24 16:48:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:48:24,180 INFO L481 AbstractCegarLoop]: Abstraction has 39761 states and 42450 transitions. [2018-10-24 16:48:24,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:48:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 39761 states and 42450 transitions. [2018-10-24 16:48:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-24 16:48:24,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:24,198 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:48:24,198 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:24,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:24,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1542002445, now seen corresponding path program 1 times [2018-10-24 16:48:24,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:24,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:24,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:24,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:24,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:24,709 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:48:24,927 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-10-24 16:48:25,240 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-24 16:48:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 235 proven. 274 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-24 16:48:25,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:48:25,897 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:48:25,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:26,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:48:26,309 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 17 Received shutdown request... [2018-10-24 16:48:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 394 proven. 93 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-24 16:48:26,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:48:26,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-10-24 16:48:26,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:48:26,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:48:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:48:26,753 INFO L87 Difference]: Start difference. First operand 39761 states and 42450 transitions. Second operand 11 states. [2018-10-24 16:48:26,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 16:48:26,754 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:48:26,760 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:48:26,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:48:26 BoogieIcfgContainer [2018-10-24 16:48:26,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:48:26,762 INFO L168 Benchmark]: Toolchain (without parser) took 247309.17 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -503.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,763 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:48:26,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1517.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 553.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,765 INFO L168 Benchmark]: Boogie Preprocessor took 374.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,766 INFO L168 Benchmark]: RCFGBuilder took 10455.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 484.6 MB). Peak memory consumption was 484.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,767 INFO L168 Benchmark]: TraceAbstraction took 234401.74 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -267.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:48:26,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1517.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 553.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 374.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10455.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 484.6 MB). Peak memory consumption was 484.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234401.74 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -267.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was constructing difference of abstraction (39761states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 234.3s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 134.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3210 SDtfs, 18255 SDslu, 2115 SDs, 0 SdLazy, 45243 SolverSat, 5756 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 117.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2033 GetRequests, 1860 SyntacticMatches, 120 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 92.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39761occurred in iteration=9, 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: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 7789 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 93.6s InterpolantComputationTime, 4985 NumberOfCodeBlocks, 4985 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4970 ConstructedInterpolants, 226 QuantifiedInterpolants, 20054217 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2599 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 5439/6993 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown