java -Xmx8000000000 -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 ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:18:00,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:18:00,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:18:00,394 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:18:00,394 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:18:00,396 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:18:00,397 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:18:00,400 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:18:00,402 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:18:00,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:18:00,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:18:00,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:18:00,407 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:18:00,408 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:18:00,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:18:00,414 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:18:00,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:18:00,426 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:18:00,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:18:00,430 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:18:00,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:18:00,435 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:18:00,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:18:00,452 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:18:00,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:18:00,481 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:18:00,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:18:00,482 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:18:00,483 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:18:00,483 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:18:00,483 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:18:00,483 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:18:00,484 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:18:00,485 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:18:00,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:18:00,485 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:18:00,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:18:00,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:18:00,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:18:00,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:18:00,486 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:18:00,486 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:18:00,487 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:18:00,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:18:00,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:18:00,487 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:18:00,487 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:18:00,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:18:00,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:18:00,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:18:00,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:18:00,549 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:18:00,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-11-06 21:18:00,605 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d108ef24/178e731600164efb8ee742cc49902980/FLAG7b1e82db8 [2018-11-06 21:18:01,512 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:18:01,513 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-11-06 21:18:01,557 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d108ef24/178e731600164efb8ee742cc49902980/FLAG7b1e82db8 [2018-11-06 21:18:01,576 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d108ef24/178e731600164efb8ee742cc49902980 [2018-11-06 21:18:01,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:18:01,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:18:01,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:18:01,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:18:01,598 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:18:01,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:01" (1/1) ... [2018-11-06 21:18:01,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45d4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:01, skipping insertion in model container [2018-11-06 21:18:01,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:01" (1/1) ... [2018-11-06 21:18:01,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:18:01,791 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:18:03,231 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:18:03,236 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:18:04,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:18:04,047 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:18:04,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04 WrapperNode [2018-11-06 21:18:04,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:18:04,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:18:04,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:18:04,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:18:04,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:04,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:04,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:18:04,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:18:04,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:18:04,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:18:04,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:04,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:04,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:05,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:05,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:05,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:05,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (1/1) ... [2018-11-06 21:18:05,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:18:05,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:18:05,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:18:05,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:18:05,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (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 [2018-11-06 21:18:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:18:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:18:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:18:18,578 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:18:18,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:18 BoogieIcfgContainer [2018-11-06 21:18:18,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:18:18,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:18:18,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:18:18,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:18:18,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:01" (1/3) ... [2018-11-06 21:18:18,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3ee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:18, skipping insertion in model container [2018-11-06 21:18:18,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:04" (2/3) ... [2018-11-06 21:18:18,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3ee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:18, skipping insertion in model container [2018-11-06 21:18:18,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:18" (3/3) ... [2018-11-06 21:18:18,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-11-06 21:18:18,599 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:18:18,609 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:18:18,627 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:18:18,675 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:18:18,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:18:18,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:18:18,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:18:18,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:18:18,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:18:18,677 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:18:18,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:18:18,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:18:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:18:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-06 21:18:18,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:18,727 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, 1, 1] [2018-11-06 21:18:18,729 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:18,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash -344880110, now seen corresponding path program 1 times [2018-11-06 21:18:18,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:18,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:18,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:18,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:18,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:19,357 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:18:19,573 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:18:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:18:19,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:19,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:18:19,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:19,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:19,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:19,812 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-11-06 21:18:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:36,279 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-11-06 21:18:36,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:18:36,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2018-11-06 21:18:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:36,333 INFO L225 Difference]: With dead ends: 4624 [2018-11-06 21:18:36,333 INFO L226 Difference]: Without dead ends: 3515 [2018-11-06 21:18:36,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:18:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-11-06 21:18:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-11-06 21:18:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-11-06 21:18:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-11-06 21:18:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 64 [2018-11-06 21:18:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:36,517 INFO L480 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-11-06 21:18:36,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:18:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-11-06 21:18:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-06 21:18:36,528 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:36,529 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, 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] [2018-11-06 21:18:36,529 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:36,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash 580556029, now seen corresponding path program 1 times [2018-11-06 21:18:36,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:36,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:36,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:36,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:36,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-11-06 21:18:36,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:18:36,913 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:18:36,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:37,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:18:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:18:37,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:18:37,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-11-06 21:18:37,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:18:37,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:18:37,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:18:37,471 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 7 states. [2018-11-06 21:18:39,017 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-06 21:19:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:04,160 INFO L93 Difference]: Finished difference Result 18149 states and 30382 transitions. [2018-11-06 21:19:04,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:19:04,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2018-11-06 21:19:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:04,241 INFO L225 Difference]: With dead ends: 18149 [2018-11-06 21:19:04,241 INFO L226 Difference]: Without dead ends: 15425 [2018-11-06 21:19:04,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:19:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2018-11-06 21:19:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 15379. [2018-11-06 21:19:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15379 states. [2018-11-06 21:19:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15379 states to 15379 states and 20533 transitions. [2018-11-06 21:19:04,580 INFO L78 Accepts]: Start accepts. Automaton has 15379 states and 20533 transitions. Word has length 190 [2018-11-06 21:19:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:04,581 INFO L480 AbstractCegarLoop]: Abstraction has 15379 states and 20533 transitions. [2018-11-06 21:19:04,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:19:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 15379 states and 20533 transitions. [2018-11-06 21:19:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-06 21:19:04,600 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:04,601 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, 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, 3, 3, 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] [2018-11-06 21:19:04,601 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:04,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash -507043185, now seen corresponding path program 1 times [2018-11-06 21:19:04,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:04,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:04,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-11-06 21:19:05,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:05,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:19:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:19:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:19:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:19:05,009 INFO L87 Difference]: Start difference. First operand 15379 states and 20533 transitions. Second operand 3 states. [2018-11-06 21:19:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:12,333 INFO L93 Difference]: Finished difference Result 39426 states and 54607 transitions. [2018-11-06 21:19:12,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:19:12,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 378 [2018-11-06 21:19:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:12,421 INFO L225 Difference]: With dead ends: 39426 [2018-11-06 21:19:12,422 INFO L226 Difference]: Without dead ends: 24837 [2018-11-06 21:19:12,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:19:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24837 states. [2018-11-06 21:19:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24837 to 24835. [2018-11-06 21:19:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24835 states. [2018-11-06 21:19:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24835 states to 24835 states and 31976 transitions. [2018-11-06 21:19:12,835 INFO L78 Accepts]: Start accepts. Automaton has 24835 states and 31976 transitions. Word has length 378 [2018-11-06 21:19:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:12,836 INFO L480 AbstractCegarLoop]: Abstraction has 24835 states and 31976 transitions. [2018-11-06 21:19:12,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:19:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24835 states and 31976 transitions. [2018-11-06 21:19:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-06 21:19:12,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:12,852 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, 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, 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, 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] [2018-11-06 21:19:12,852 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:12,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:12,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2007712104, now seen corresponding path program 1 times [2018-11-06 21:19:12,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:12,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:12,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:12,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:12,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-06 21:19:13,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:13,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:19:13,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:19:13,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:19:13,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:19:13,314 INFO L87 Difference]: Start difference. First operand 24835 states and 31976 transitions. Second operand 3 states. [2018-11-06 21:19:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:19,611 INFO L93 Difference]: Finished difference Result 48866 states and 63144 transitions. [2018-11-06 21:19:19,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:19:19,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-11-06 21:19:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:19,665 INFO L225 Difference]: With dead ends: 48866 [2018-11-06 21:19:19,665 INFO L226 Difference]: Without dead ends: 24821 [2018-11-06 21:19:19,692 INFO L604 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 [2018-11-06 21:19:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24821 states. [2018-11-06 21:19:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24821 to 24820. [2018-11-06 21:19:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24820 states. [2018-11-06 21:19:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24820 states to 24820 states and 29747 transitions. [2018-11-06 21:19:20,023 INFO L78 Accepts]: Start accepts. Automaton has 24820 states and 29747 transitions. Word has length 412 [2018-11-06 21:19:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:20,024 INFO L480 AbstractCegarLoop]: Abstraction has 24820 states and 29747 transitions. [2018-11-06 21:19:20,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:19:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 24820 states and 29747 transitions. [2018-11-06 21:19:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-11-06 21:19:20,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:20,046 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, 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, 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, 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] [2018-11-06 21:19:20,046 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:20,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:20,047 INFO L82 PathProgramCache]: Analyzing trace with hash 816461091, now seen corresponding path program 1 times [2018-11-06 21:19:20,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:20,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:20,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:20,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:20,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-06 21:19:20,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:20,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:20,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:20,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:20,673 INFO L87 Difference]: Start difference. First operand 24820 states and 29747 transitions. Second operand 4 states. [2018-11-06 21:19:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:28,429 INFO L93 Difference]: Finished difference Result 53555 states and 64930 transitions. [2018-11-06 21:19:28,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:28,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 430 [2018-11-06 21:19:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:28,486 INFO L225 Difference]: With dead ends: 53555 [2018-11-06 21:19:28,486 INFO L226 Difference]: Without dead ends: 29525 [2018-11-06 21:19:28,509 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29525 states. [2018-11-06 21:19:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29525 to 27948. [2018-11-06 21:19:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27948 states. [2018-11-06 21:19:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27948 states to 27948 states and 32353 transitions. [2018-11-06 21:19:28,845 INFO L78 Accepts]: Start accepts. Automaton has 27948 states and 32353 transitions. Word has length 430 [2018-11-06 21:19:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:28,846 INFO L480 AbstractCegarLoop]: Abstraction has 27948 states and 32353 transitions. [2018-11-06 21:19:28,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 27948 states and 32353 transitions. [2018-11-06 21:19:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2018-11-06 21:19:28,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:28,880 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, 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, 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, 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, 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] [2018-11-06 21:19:28,880 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:28,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1118451451, now seen corresponding path program 1 times [2018-11-06 21:19:28,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:28,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:28,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:28,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:28,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-06 21:19:29,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:29,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:29,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:29,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:29,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:29,784 INFO L87 Difference]: Start difference. First operand 27948 states and 32353 transitions. Second operand 4 states. [2018-11-06 21:19:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:37,759 INFO L93 Difference]: Finished difference Result 55111 states and 63923 transitions. [2018-11-06 21:19:37,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:37,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 571 [2018-11-06 21:19:37,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:37,794 INFO L225 Difference]: With dead ends: 55111 [2018-11-06 21:19:37,795 INFO L226 Difference]: Without dead ends: 27953 [2018-11-06 21:19:37,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27953 states. [2018-11-06 21:19:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27953 to 27938. [2018-11-06 21:19:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27938 states. [2018-11-06 21:19:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27938 states to 27938 states and 31098 transitions. [2018-11-06 21:19:38,139 INFO L78 Accepts]: Start accepts. Automaton has 27938 states and 31098 transitions. Word has length 571 [2018-11-06 21:19:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:38,140 INFO L480 AbstractCegarLoop]: Abstraction has 27938 states and 31098 transitions. [2018-11-06 21:19:38,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27938 states and 31098 transitions. [2018-11-06 21:19:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-11-06 21:19:38,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:38,170 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, 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, 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, 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, 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] [2018-11-06 21:19:38,171 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:38,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1203895827, now seen corresponding path program 1 times [2018-11-06 21:19:38,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:38,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:38,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:38,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:38,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-11-06 21:19:38,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:38,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:38,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:38,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:38,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:38,762 INFO L87 Difference]: Start difference. First operand 27938 states and 31098 transitions. Second operand 4 states. [2018-11-06 21:19:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:46,589 INFO L93 Difference]: Finished difference Result 69298 states and 78498 transitions. [2018-11-06 21:19:46,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:46,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-11-06 21:19:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:46,643 INFO L225 Difference]: With dead ends: 69298 [2018-11-06 21:19:46,643 INFO L226 Difference]: Without dead ends: 42150 [2018-11-06 21:19:46,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42150 states. [2018-11-06 21:19:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42150 to 41335. [2018-11-06 21:19:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41335 states. [2018-11-06 21:19:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41335 states to 41335 states and 45917 transitions. [2018-11-06 21:19:47,148 INFO L78 Accepts]: Start accepts. Automaton has 41335 states and 45917 transitions. Word has length 582 [2018-11-06 21:19:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:47,148 INFO L480 AbstractCegarLoop]: Abstraction has 41335 states and 45917 transitions. [2018-11-06 21:19:47,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 41335 states and 45917 transitions. [2018-11-06 21:19:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-11-06 21:19:47,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:47,190 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, 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, 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, 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, 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] [2018-11-06 21:19:47,190 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:47,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1979989142, now seen corresponding path program 1 times [2018-11-06 21:19:47,191 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:47,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:47,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:47,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:47,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 381 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-11-06 21:19:47,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:19:47,911 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:19:47,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:48,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:19:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-11-06 21:19:48,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:19:48,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:19:48,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:48,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:48,342 INFO L87 Difference]: Start difference. First operand 41335 states and 45917 transitions. Second operand 4 states. [2018-11-06 21:19:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:57,977 INFO L93 Difference]: Finished difference Result 134752 states and 148704 transitions. [2018-11-06 21:19:57,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:57,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 612 [2018-11-06 21:19:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:58,070 INFO L225 Difference]: With dead ends: 134752 [2018-11-06 21:19:58,070 INFO L226 Difference]: Without dead ends: 85507 [2018-11-06 21:19:58,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85507 states. [2018-11-06 21:19:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85507 to 61008. [2018-11-06 21:19:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61008 states. [2018-11-06 21:19:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61008 states to 61008 states and 65582 transitions. [2018-11-06 21:19:58,795 INFO L78 Accepts]: Start accepts. Automaton has 61008 states and 65582 transitions. Word has length 612 [2018-11-06 21:19:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:58,796 INFO L480 AbstractCegarLoop]: Abstraction has 61008 states and 65582 transitions. [2018-11-06 21:19:58,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 61008 states and 65582 transitions. [2018-11-06 21:19:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-06 21:19:58,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:58,821 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, 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, 4, 4, 4, 4, 4, 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, 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, 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] [2018-11-06 21:19:58,822 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:58,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash -273215961, now seen corresponding path program 1 times [2018-11-06 21:19:58,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:58,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:58,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 247 proven. 316 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-06 21:20:00,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:20:00,000 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:20:00,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:20:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:20:00,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:20:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-11-06 21:20:01,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:20:01,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:20:01,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:20:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:20:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:20:01,374 INFO L87 Difference]: Start difference. First operand 61008 states and 65582 transitions. Second operand 7 states. [2018-11-06 21:20:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:20:33,437 INFO L93 Difference]: Finished difference Result 276678 states and 295724 transitions. [2018-11-06 21:20:33,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 21:20:33,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 672 [2018-11-06 21:20:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:20:33,703 INFO L225 Difference]: With dead ends: 276678 [2018-11-06 21:20:33,703 INFO L226 Difference]: Without dead ends: 204593 [2018-11-06 21:20:33,752 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-11-06 21:20:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204593 states. [2018-11-06 21:20:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204593 to 168224. [2018-11-06 21:20:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168224 states. [2018-11-06 21:20:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168224 states to 168224 states and 177212 transitions. [2018-11-06 21:20:35,376 INFO L78 Accepts]: Start accepts. Automaton has 168224 states and 177212 transitions. Word has length 672 [2018-11-06 21:20:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:20:35,376 INFO L480 AbstractCegarLoop]: Abstraction has 168224 states and 177212 transitions. [2018-11-06 21:20:35,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:20:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 168224 states and 177212 transitions. [2018-11-06 21:20:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1754 [2018-11-06 21:20:35,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:20:35,494 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 3, 3, 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, 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, 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, 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] [2018-11-06 21:20:35,495 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:20:35,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:20:35,496 INFO L82 PathProgramCache]: Analyzing trace with hash 775662050, now seen corresponding path program 1 times [2018-11-06 21:20:35,496 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:20:35,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:20:35,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:20:35,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:20:35,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:20:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:20:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1983 proven. 0 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2018-11-06 21:20:39,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:20:39,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:20:39,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:20:39,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:20:39,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:20:39,203 INFO L87 Difference]: Start difference. First operand 168224 states and 177212 transitions. Second operand 4 states. [2018-11-06 21:20:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:20:47,395 INFO L93 Difference]: Finished difference Result 334097 states and 352048 transitions. [2018-11-06 21:20:47,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:20:47,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1753 [2018-11-06 21:20:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:20:47,588 INFO L225 Difference]: With dead ends: 334097 [2018-11-06 21:20:47,588 INFO L226 Difference]: Without dead ends: 165865 [2018-11-06 21:20:47,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:20:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165865 states. [2018-11-06 21:20:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165865 to 165056. [2018-11-06 21:20:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165056 states. [2018-11-06 21:20:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165056 states to 165056 states and 171583 transitions. [2018-11-06 21:20:49,233 INFO L78 Accepts]: Start accepts. Automaton has 165056 states and 171583 transitions. Word has length 1753 [2018-11-06 21:20:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:20:49,234 INFO L480 AbstractCegarLoop]: Abstraction has 165056 states and 171583 transitions. [2018-11-06 21:20:49,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:20:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 165056 states and 171583 transitions. [2018-11-06 21:20:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1892 [2018-11-06 21:20:49,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:20:49,367 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-11-06 21:20:49,367 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:20:49,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:20:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1068537104, now seen corresponding path program 1 times [2018-11-06 21:20:49,368 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:20:49,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:20:49,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:20:49,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:20:49,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:20:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:20:50,831 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:20:51,335 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:20:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2455 proven. 12 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-11-06 21:20:55,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:20:55,695 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:20:55,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:20:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:20:56,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:20:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2633 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-11-06 21:20:59,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:20:59,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-11-06 21:20:59,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:20:59,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:20:59,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:20:59,389 INFO L87 Difference]: Start difference. First operand 165056 states and 171583 transitions. Second operand 8 states. [2018-11-06 21:21:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:21:13,778 INFO L93 Difference]: Finished difference Result 330913 states and 344047 transitions. [2018-11-06 21:21:13,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:21:13,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1891 [2018-11-06 21:21:13,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:21:13,973 INFO L225 Difference]: With dead ends: 330913 [2018-11-06 21:21:13,973 INFO L226 Difference]: Without dead ends: 166647 [2018-11-06 21:21:14,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1892 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:21:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166647 states. [2018-11-06 21:21:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166647 to 164264. [2018-11-06 21:21:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164264 states. [2018-11-06 21:21:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164264 states to 164264 states and 170230 transitions. [2018-11-06 21:21:15,923 INFO L78 Accepts]: Start accepts. Automaton has 164264 states and 170230 transitions. Word has length 1891 [2018-11-06 21:21:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:21:15,924 INFO L480 AbstractCegarLoop]: Abstraction has 164264 states and 170230 transitions. [2018-11-06 21:21:15,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:21:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 164264 states and 170230 transitions. [2018-11-06 21:21:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1892 [2018-11-06 21:21:16,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:21:16,020 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-11-06 21:21:16,021 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:21:16,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:21:16,021 INFO L82 PathProgramCache]: Analyzing trace with hash 386074866, now seen corresponding path program 1 times [2018-11-06 21:21:16,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:21:16,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:21:16,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:16,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:21:16,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:21:17,157 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 21:21:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2415 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2018-11-06 21:21:19,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:21:19,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:21:19,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:21:19,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:21:19,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:21:19,376 INFO L87 Difference]: Start difference. First operand 164264 states and 170230 transitions. Second operand 4 states. [2018-11-06 21:21:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:21:25,941 INFO L93 Difference]: Finished difference Result 330894 states and 342959 transitions. [2018-11-06 21:21:25,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:21:25,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1891 [2018-11-06 21:21:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:21:26,117 INFO L225 Difference]: With dead ends: 330894 [2018-11-06 21:21:26,118 INFO L226 Difference]: Without dead ends: 167420 [2018-11-06 21:21:26,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:21:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167420 states. [2018-11-06 21:21:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167420 to 165840. [2018-11-06 21:21:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165840 states. [2018-11-06 21:21:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165840 states to 165840 states and 171729 transitions. [2018-11-06 21:21:28,106 INFO L78 Accepts]: Start accepts. Automaton has 165840 states and 171729 transitions. Word has length 1891 [2018-11-06 21:21:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:21:28,107 INFO L480 AbstractCegarLoop]: Abstraction has 165840 states and 171729 transitions. [2018-11-06 21:21:28,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:21:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 165840 states and 171729 transitions. [2018-11-06 21:21:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1900 [2018-11-06 21:21:28,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:21:28,221 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2018-11-06 21:21:28,221 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:21:28,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:21:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash -169995317, now seen corresponding path program 1 times [2018-11-06 21:21:28,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:21:28,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:21:28,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:28,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:21:28,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:21:30,087 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 21:21:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3390 backedges. 1945 proven. 225 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2018-11-06 21:21:33,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:21:33,012 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:21:33,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:21:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:21:33,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:21:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3390 backedges. 2362 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2018-11-06 21:21:35,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:21:35,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-06 21:21:35,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:21:35,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:21:35,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:21:35,951 INFO L87 Difference]: Start difference. First operand 165840 states and 171729 transitions. Second operand 7 states. Received shutdown request... [2018-11-06 21:21:48,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:21:48,005 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:21:48,011 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:21:48,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:21:48 BoogieIcfgContainer [2018-11-06 21:21:48,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:21:48,012 INFO L168 Benchmark]: Toolchain (without parser) took 226421.00 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -417.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,013 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-06 21:21:48,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2455.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 862.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,015 INFO L168 Benchmark]: Boogie Preprocessor took 513.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 78.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,016 INFO L168 Benchmark]: RCFGBuilder took 13153.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 226.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.4 MB). Peak memory consumption was 560.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,017 INFO L168 Benchmark]: TraceAbstraction took 209430.77 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 224.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:21:48,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2455.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 862.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 513.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 78.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13153.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 226.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.4 MB). Peak memory consumption was 560.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209430.77 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 224.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (165840states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (112643 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 13 OverallIterations, 9 TraceHistogramMax, 165.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10050 SDtfs, 50438 SDslu, 3677 SDs, 0 SdLazy, 85140 SolverSat, 25022 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 130.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5348 GetRequests, 5275 SyntacticMatches, 16 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168224occurred 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: 10.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 68097 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 16609 NumberOfCodeBlocks, 16609 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 16591 ConstructedInterpolants, 90 QuantifiedInterpolants, 51587519 SizeOfPredicates, 7 NumberOfNonLiveVariables, 6196 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 25204/25793 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown