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/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:26:01,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:26:01,579 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:26:01,597 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:26:01,597 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:26:01,598 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:26:01,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:26:01,603 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:26:01,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:26:01,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:26:01,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:26:01,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:26:01,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:26:01,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:26:01,620 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:26:01,621 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:26:01,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:26:01,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:26:01,627 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:26:01,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:26:01,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:26:01,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:26:01,638 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:26:01,638 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:26:01,638 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:26:01,640 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:26:01,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:26:01,641 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:26:01,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:26:01,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:26:01,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:26:01,646 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:26:01,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:26:01,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:26:01,649 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:26:01,650 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:26:01,650 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 19:26:01,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:26:01,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:26:01,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:26:01,668 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:26:01,671 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:26:01,671 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:26:01,671 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:26:01,672 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:26:01,672 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:26:01,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:26:01,672 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:26:01,672 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:26:01,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:26:01,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:26:01,674 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:26:01,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:26:01,674 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:26:01,674 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:26:01,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:26:01,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:26:01,675 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:26:01,675 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:26:01,675 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:26:01,675 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:26:01,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:26:01,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:26:01,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:26:01,677 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:26:01,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:26:01,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:26:01,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:26:01,751 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:26:01,752 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:26:01,752 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-11-06 19:26:01,816 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a2f0f0/95c20774dcc54ed6a65d37ef068f9bb9/FLAG05982ca18 [2018-11-06 19:26:02,522 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:26:02,524 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-11-06 19:26:02,548 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a2f0f0/95c20774dcc54ed6a65d37ef068f9bb9/FLAG05982ca18 [2018-11-06 19:26:02,566 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a2f0f0/95c20774dcc54ed6a65d37ef068f9bb9 [2018-11-06 19:26:02,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:26:02,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:26:02,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:26:02,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:26:02,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:26:02,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:26:02" (1/1) ... [2018-11-06 19:26:02,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6fc82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:02, skipping insertion in model container [2018-11-06 19:26:02,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:26:02" (1/1) ... [2018-11-06 19:26:02,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:26:02,702 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:26:03,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:26:03,550 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:26:03,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:26:03,863 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:26:03,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03 WrapperNode [2018-11-06 19:26:03,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:26:03,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:26:03,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:26:03,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:26:03,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:26:04,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:26:04,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:26:04,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:26:04,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (1/1) ... [2018-11-06 19:26:04,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:26:04,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:26:04,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:26:04,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:26:04,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (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 19:26:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:26:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:26:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:26:10,099 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:26:10,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:26:10 BoogieIcfgContainer [2018-11-06 19:26:10,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:26:10,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:26:10,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:26:10,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:26:10,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:26:02" (1/3) ... [2018-11-06 19:26:10,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128032fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:26:10, skipping insertion in model container [2018-11-06 19:26:10,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:26:03" (2/3) ... [2018-11-06 19:26:10,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128032fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:26:10, skipping insertion in model container [2018-11-06 19:26:10,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:26:10" (3/3) ... [2018-11-06 19:26:10,108 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-11-06 19:26:10,118 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:26:10,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:26:10,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:26:10,183 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:26:10,184 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:26:10,184 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:26:10,185 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:26:10,185 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:26:10,185 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:26:10,185 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:26:10,185 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:26:10,185 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:26:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-11-06 19:26:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-06 19:26:10,221 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:10,222 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:26:10,224 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:10,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-11-06 19:26:10,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:10,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:10,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:10,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:10,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:10,617 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 19:26:10,623 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 19:26:10,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:10,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:26:10,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:26:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:26:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:10,650 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-11-06 19:26:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:17,736 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-11-06 19:26:17,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:26:17,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-06 19:26:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:17,770 INFO L225 Difference]: With dead ends: 1473 [2018-11-06 19:26:17,770 INFO L226 Difference]: Without dead ends: 1069 [2018-11-06 19:26:17,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-06 19:26:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2018-11-06 19:26:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2018-11-06 19:26:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1914 transitions. [2018-11-06 19:26:17,891 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1914 transitions. Word has length 16 [2018-11-06 19:26:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:17,892 INFO L480 AbstractCegarLoop]: Abstraction has 1069 states and 1914 transitions. [2018-11-06 19:26:17,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:26:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1914 transitions. [2018-11-06 19:26:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-06 19:26:17,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:17,898 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:26:17,900 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:17,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash -800284846, now seen corresponding path program 1 times [2018-11-06 19:26:17,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:17,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:17,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:26:18,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:18,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:26:18,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:26:18,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:26:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:18,096 INFO L87 Difference]: Start difference. First operand 1069 states and 1914 transitions. Second operand 4 states. [2018-11-06 19:26:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:23,271 INFO L93 Difference]: Finished difference Result 4116 states and 7498 transitions. [2018-11-06 19:26:23,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:26:23,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-11-06 19:26:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:23,290 INFO L225 Difference]: With dead ends: 4116 [2018-11-06 19:26:23,291 INFO L226 Difference]: Without dead ends: 3049 [2018-11-06 19:26:23,296 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-11-06 19:26:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3049. [2018-11-06 19:26:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2018-11-06 19:26:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4881 transitions. [2018-11-06 19:26:23,383 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4881 transitions. Word has length 83 [2018-11-06 19:26:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:23,384 INFO L480 AbstractCegarLoop]: Abstraction has 3049 states and 4881 transitions. [2018-11-06 19:26:23,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:26:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4881 transitions. [2018-11-06 19:26:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-06 19:26:23,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:23,393 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:26:23,393 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:23,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:23,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1554734504, now seen corresponding path program 1 times [2018-11-06 19:26:23,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:23,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:23,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:23,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:23,953 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-06 19:26:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:26:24,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:24,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:26:24,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:26:24,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:26:24,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:26:24,164 INFO L87 Difference]: Start difference. First operand 3049 states and 4881 transitions. Second operand 7 states. [2018-11-06 19:26:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:31,644 INFO L93 Difference]: Finished difference Result 9395 states and 14329 transitions. [2018-11-06 19:26:31,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:26:31,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2018-11-06 19:26:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:31,681 INFO L225 Difference]: With dead ends: 9395 [2018-11-06 19:26:31,682 INFO L226 Difference]: Without dead ends: 6348 [2018-11-06 19:26:31,688 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:26:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-11-06 19:26:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6016. [2018-11-06 19:26:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2018-11-06 19:26:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8749 transitions. [2018-11-06 19:26:31,816 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8749 transitions. Word has length 151 [2018-11-06 19:26:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:31,817 INFO L480 AbstractCegarLoop]: Abstraction has 6016 states and 8749 transitions. [2018-11-06 19:26:31,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:26:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8749 transitions. [2018-11-06 19:26:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-06 19:26:31,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:31,830 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:31,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:31,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1804448015, now seen corresponding path program 1 times [2018-11-06 19:26:31,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:31,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:31,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:31,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:31,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:26:32,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:32,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:26:32,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:26:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:26:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:26:32,502 INFO L87 Difference]: Start difference. First operand 6016 states and 8749 transitions. Second operand 7 states. [2018-11-06 19:26:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:37,551 INFO L93 Difference]: Finished difference Result 16156 states and 22422 transitions. [2018-11-06 19:26:37,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:26:37,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2018-11-06 19:26:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:37,586 INFO L225 Difference]: With dead ends: 16156 [2018-11-06 19:26:37,586 INFO L226 Difference]: Without dead ends: 7990 [2018-11-06 19:26:37,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:26:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2018-11-06 19:26:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 7990. [2018-11-06 19:26:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7990 states. [2018-11-06 19:26:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 9259 transitions. [2018-11-06 19:26:37,743 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 9259 transitions. Word has length 319 [2018-11-06 19:26:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:37,743 INFO L480 AbstractCegarLoop]: Abstraction has 7990 states and 9259 transitions. [2018-11-06 19:26:37,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:26:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 9259 transitions. [2018-11-06 19:26:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-06 19:26:37,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:37,755 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:26:37,755 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:37,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:37,756 INFO L82 PathProgramCache]: Analyzing trace with hash 104442207, now seen corresponding path program 1 times [2018-11-06 19:26:37,756 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:37,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:37,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:37,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:37,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:38,094 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 19:26:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 19:26:38,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:38,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:26:38,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:26:38,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:26:38,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:26:38,603 INFO L87 Difference]: Start difference. First operand 7990 states and 9259 transitions. Second operand 7 states. [2018-11-06 19:26:40,288 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 19:26:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:42,981 INFO L93 Difference]: Finished difference Result 16383 states and 18928 transitions. [2018-11-06 19:26:42,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:26:42,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2018-11-06 19:26:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:43,013 INFO L225 Difference]: With dead ends: 16383 [2018-11-06 19:26:43,013 INFO L226 Difference]: Without dead ends: 8395 [2018-11-06 19:26:43,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:26:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2018-11-06 19:26:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 8320. [2018-11-06 19:26:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8320 states. [2018-11-06 19:26:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 9591 transitions. [2018-11-06 19:26:43,149 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 9591 transitions. Word has length 363 [2018-11-06 19:26:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:43,150 INFO L480 AbstractCegarLoop]: Abstraction has 8320 states and 9591 transitions. [2018-11-06 19:26:43,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:26:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 9591 transitions. [2018-11-06 19:26:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-11-06 19:26:43,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:43,164 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:26:43,164 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:43,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1368709533, now seen corresponding path program 1 times [2018-11-06 19:26:43,165 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:43,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:43,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-11-06 19:26:43,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:26:43,789 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 19:26:43,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:43,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:26:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-06 19:26:44,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:26:44,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 19:26:44,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:26:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:26:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:26:44,646 INFO L87 Difference]: Start difference. First operand 8320 states and 9591 transitions. Second operand 5 states. [2018-11-06 19:26:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:47,806 INFO L93 Difference]: Finished difference Result 18948 states and 22314 transitions. [2018-11-06 19:26:47,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:26:47,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-11-06 19:26:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:47,838 INFO L225 Difference]: With dead ends: 18948 [2018-11-06 19:26:47,839 INFO L226 Difference]: Without dead ends: 10960 [2018-11-06 19:26:47,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:26:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2018-11-06 19:26:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10960. [2018-11-06 19:26:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10960 states. [2018-11-06 19:26:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 12608 transitions. [2018-11-06 19:26:48,026 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 12608 transitions. Word has length 467 [2018-11-06 19:26:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:48,027 INFO L480 AbstractCegarLoop]: Abstraction has 10960 states and 12608 transitions. [2018-11-06 19:26:48,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:26:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 12608 transitions. [2018-11-06 19:26:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-11-06 19:26:48,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:48,051 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:26:48,051 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:48,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash -682465616, now seen corresponding path program 1 times [2018-11-06 19:26:48,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:48,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:48,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:48,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:48,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:48,657 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:26:49,036 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-11-06 19:26:49,449 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-11-06 19:26:49,996 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2018-11-06 19:26:50,758 WARN L179 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2018-11-06 19:26:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 399 proven. 65 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 19:26:51,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:26:51,747 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 19:26:51,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:51,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:26:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-11-06 19:26:52,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:26:52,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2018-11-06 19:26:52,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:26:52,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:26:52,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:26:52,152 INFO L87 Difference]: Start difference. First operand 10960 states and 12608 transitions. Second operand 9 states. [2018-11-06 19:26:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:58,032 INFO L93 Difference]: Finished difference Result 27231 states and 30909 transitions. [2018-11-06 19:26:58,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 19:26:58,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 579 [2018-11-06 19:26:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:58,066 INFO L225 Difference]: With dead ends: 27231 [2018-11-06 19:26:58,066 INFO L226 Difference]: Without dead ends: 16603 [2018-11-06 19:26:58,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-11-06 19:26:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2018-11-06 19:26:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 14589. [2018-11-06 19:26:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14589 states. [2018-11-06 19:26:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14589 states to 14589 states and 16211 transitions. [2018-11-06 19:26:58,300 INFO L78 Accepts]: Start accepts. Automaton has 14589 states and 16211 transitions. Word has length 579 [2018-11-06 19:26:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:58,301 INFO L480 AbstractCegarLoop]: Abstraction has 14589 states and 16211 transitions. [2018-11-06 19:26:58,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:26:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 14589 states and 16211 transitions. [2018-11-06 19:26:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2018-11-06 19:26:58,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:58,335 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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 19:26:58,335 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:58,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1388591904, now seen corresponding path program 1 times [2018-11-06 19:26:58,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:58,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:58,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:58,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:58,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-11-06 19:26:58,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:58,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:26:58,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:26:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:26:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:58,954 INFO L87 Difference]: Start difference. First operand 14589 states and 16211 transitions. Second operand 4 states. [2018-11-06 19:27:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:01,524 INFO L93 Difference]: Finished difference Result 31811 states and 35534 transitions. [2018-11-06 19:27:01,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:27:01,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 705 [2018-11-06 19:27:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:01,555 INFO L225 Difference]: With dead ends: 31811 [2018-11-06 19:27:01,555 INFO L226 Difference]: Without dead ends: 17554 [2018-11-06 19:27:01,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:27:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2018-11-06 19:27:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 17554. [2018-11-06 19:27:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17554 states. [2018-11-06 19:27:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17554 states to 17554 states and 19120 transitions. [2018-11-06 19:27:01,768 INFO L78 Accepts]: Start accepts. Automaton has 17554 states and 19120 transitions. Word has length 705 [2018-11-06 19:27:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:01,769 INFO L480 AbstractCegarLoop]: Abstraction has 17554 states and 19120 transitions. [2018-11-06 19:27:01,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:27:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17554 states and 19120 transitions. [2018-11-06 19:27:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-11-06 19:27:01,809 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:01,810 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 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 19:27:01,810 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:01,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1722447119, now seen corresponding path program 1 times [2018-11-06 19:27:01,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:01,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:01,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:01,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:01,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-11-06 19:27:02,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:27:02,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:27:02,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:27:02,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:27:02,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:27:02,648 INFO L87 Difference]: Start difference. First operand 17554 states and 19120 transitions. Second operand 4 states. [2018-11-06 19:27:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:05,160 INFO L93 Difference]: Finished difference Result 38076 states and 41607 transitions. [2018-11-06 19:27:05,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:27:05,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2018-11-06 19:27:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:05,197 INFO L225 Difference]: With dead ends: 38076 [2018-11-06 19:27:05,197 INFO L226 Difference]: Without dead ends: 20854 [2018-11-06 19:27:05,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:27:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2018-11-06 19:27:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 20854. [2018-11-06 19:27:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20854 states. [2018-11-06 19:27:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20854 states to 20854 states and 22319 transitions. [2018-11-06 19:27:05,470 INFO L78 Accepts]: Start accepts. Automaton has 20854 states and 22319 transitions. Word has length 768 [2018-11-06 19:27:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:05,470 INFO L480 AbstractCegarLoop]: Abstraction has 20854 states and 22319 transitions. [2018-11-06 19:27:05,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:27:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 20854 states and 22319 transitions. [2018-11-06 19:27:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2018-11-06 19:27:05,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:05,498 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2018-11-06 19:27:05,498 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:05,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1595302680, now seen corresponding path program 1 times [2018-11-06 19:27:05,499 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:05,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:05,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2018-11-06 19:27:06,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:27:06,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:27:06,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:27:06,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:27:06,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:27:06,581 INFO L87 Difference]: Start difference. First operand 20854 states and 22319 transitions. Second operand 4 states. [2018-11-06 19:27:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:08,548 INFO L93 Difference]: Finished difference Result 51276 states and 54898 transitions. [2018-11-06 19:27:08,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:27:08,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 913 [2018-11-06 19:27:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:08,583 INFO L225 Difference]: With dead ends: 51276 [2018-11-06 19:27:08,583 INFO L226 Difference]: Without dead ends: 26774 [2018-11-06 19:27:08,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:27:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-11-06 19:27:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 24132. [2018-11-06 19:27:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24132 states. [2018-11-06 19:27:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24132 states to 24132 states and 25342 transitions. [2018-11-06 19:27:08,896 INFO L78 Accepts]: Start accepts. Automaton has 24132 states and 25342 transitions. Word has length 913 [2018-11-06 19:27:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:08,897 INFO L480 AbstractCegarLoop]: Abstraction has 24132 states and 25342 transitions. [2018-11-06 19:27:08,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:27:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 24132 states and 25342 transitions. [2018-11-06 19:27:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2018-11-06 19:27:08,932 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:08,933 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:27:08,933 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:08,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1171794564, now seen corresponding path program 1 times [2018-11-06 19:27:08,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:08,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:08,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:08,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:08,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:10,022 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-11-06 19:27:10,208 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-06 19:27:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 1772 proven. 310 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-11-06 19:27:11,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:27:11,764 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 19:27:11,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:12,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:27:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 2054 proven. 28 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-11-06 19:27:13,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:27:13,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2018-11-06 19:27:13,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:27:13,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:27:13,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:27:13,486 INFO L87 Difference]: Start difference. First operand 24132 states and 25342 transitions. Second operand 7 states. [2018-11-06 19:27:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:17,865 INFO L93 Difference]: Finished difference Result 48721 states and 51147 transitions. [2018-11-06 19:27:17,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:27:17,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1254 [2018-11-06 19:27:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:17,888 INFO L225 Difference]: With dead ends: 48721 [2018-11-06 19:27:17,889 INFO L226 Difference]: Without dead ends: 23469 [2018-11-06 19:27:17,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:27:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2018-11-06 19:27:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 21489. [2018-11-06 19:27:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21489 states. [2018-11-06 19:27:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21489 states to 21489 states and 22397 transitions. [2018-11-06 19:27:18,133 INFO L78 Accepts]: Start accepts. Automaton has 21489 states and 22397 transitions. Word has length 1254 [2018-11-06 19:27:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:18,134 INFO L480 AbstractCegarLoop]: Abstraction has 21489 states and 22397 transitions. [2018-11-06 19:27:18,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:27:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 21489 states and 22397 transitions. [2018-11-06 19:27:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1503 [2018-11-06 19:27:18,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:18,167 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:27:18,168 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:18,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:18,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1092969997, now seen corresponding path program 1 times [2018-11-06 19:27:18,169 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:18,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:18,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:18,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:18,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:19,059 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:27:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 2775 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2018-11-06 19:27:21,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:27:21,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:27:21,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:27:21,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:27:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:27:21,160 INFO L87 Difference]: Start difference. First operand 21489 states and 22397 transitions. Second operand 6 states. [2018-11-06 19:27:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:23,483 INFO L93 Difference]: Finished difference Result 43640 states and 45474 transitions. [2018-11-06 19:27:23,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:27:23,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1502 [2018-11-06 19:27:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:23,503 INFO L225 Difference]: With dead ends: 43640 [2018-11-06 19:27:23,504 INFO L226 Difference]: Without dead ends: 22153 [2018-11-06 19:27:23,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:27:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22153 states. [2018-11-06 19:27:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22153 to 21819. [2018-11-06 19:27:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states. [2018-11-06 19:27:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 22733 transitions. [2018-11-06 19:27:23,705 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 22733 transitions. Word has length 1502 [2018-11-06 19:27:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:23,706 INFO L480 AbstractCegarLoop]: Abstraction has 21819 states and 22733 transitions. [2018-11-06 19:27:23,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:27:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 22733 transitions. [2018-11-06 19:27:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2018-11-06 19:27:23,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:23,729 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2018-11-06 19:27:23,729 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:23,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:23,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1624140356, now seen corresponding path program 1 times [2018-11-06 19:27:23,730 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:23,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:23,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:23,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:23,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 4203 proven. 151 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2018-11-06 19:27:27,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:27:27,555 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 19:27:27,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:27,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:27:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 3018 proven. 0 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2018-11-06 19:27:29,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:27:29,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-11-06 19:27:29,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 19:27:29,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 19:27:29,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:27:29,765 INFO L87 Difference]: Start difference. First operand 21819 states and 22733 transitions. Second operand 11 states. [2018-11-06 19:27:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:37,440 INFO L93 Difference]: Finished difference Result 44139 states and 45978 transitions. [2018-11-06 19:27:37,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 19:27:37,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1760 [2018-11-06 19:27:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:37,462 INFO L225 Difference]: With dead ends: 44139 [2018-11-06 19:27:37,462 INFO L226 Difference]: Without dead ends: 18326 [2018-11-06 19:27:37,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1789 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2018-11-06 19:27:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2018-11-06 19:27:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 16849. [2018-11-06 19:27:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-11-06 19:27:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17445 transitions. [2018-11-06 19:27:37,631 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17445 transitions. Word has length 1760 [2018-11-06 19:27:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:37,633 INFO L480 AbstractCegarLoop]: Abstraction has 16849 states and 17445 transitions. [2018-11-06 19:27:37,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 19:27:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17445 transitions. [2018-11-06 19:27:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1923 [2018-11-06 19:27:37,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:37,662 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2018-11-06 19:27:37,663 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:37,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:37,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1402703494, now seen corresponding path program 1 times [2018-11-06 19:27:37,663 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:37,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:37,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:37,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:37,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:38,944 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:27:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 243 refuted. 0 times theorem prover too weak. 3587 trivial. 0 not checked. [2018-11-06 19:27:42,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:27:42,928 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 19:27:42,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:43,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:27:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 0 refuted. 0 times theorem prover too weak. 3830 trivial. 0 not checked. [2018-11-06 19:27:45,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:27:45,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-11-06 19:27:45,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:27:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:27:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:27:45,800 INFO L87 Difference]: Start difference. First operand 16849 states and 17445 transitions. Second operand 10 states. [2018-11-06 19:27:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:27:53,385 INFO L93 Difference]: Finished difference Result 36012 states and 37232 transitions. [2018-11-06 19:27:53,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:27:53,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1922 [2018-11-06 19:27:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:27:53,403 INFO L225 Difference]: With dead ends: 36012 [2018-11-06 19:27:53,403 INFO L226 Difference]: Without dead ends: 19165 [2018-11-06 19:27:53,413 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1938 GetRequests, 1921 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-11-06 19:27:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2018-11-06 19:27:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 16849. [2018-11-06 19:27:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-11-06 19:27:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17437 transitions. [2018-11-06 19:27:53,556 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17437 transitions. Word has length 1922 [2018-11-06 19:27:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:27:53,556 INFO L480 AbstractCegarLoop]: Abstraction has 16849 states and 17437 transitions. [2018-11-06 19:27:53,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:27:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17437 transitions. [2018-11-06 19:27:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2018-11-06 19:27:53,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:27:53,594 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 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, 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, 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, 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] [2018-11-06 19:27:53,594 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:27:53,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:27:53,595 INFO L82 PathProgramCache]: Analyzing trace with hash -125271930, now seen corresponding path program 1 times [2018-11-06 19:27:53,595 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:27:53,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:27:53,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:53,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:53,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:27:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:54,472 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-11-06 19:27:54,791 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-11-06 19:27:55,150 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 19:27:55,343 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2018-11-06 19:27:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2644 proven. 158 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-11-06 19:27:58,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:27:58,020 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:27:58,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:58,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:28:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2802 proven. 0 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-11-06 19:28:00,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:28:00,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-11-06 19:28:00,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:28:00,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:28:00,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:28:00,678 INFO L87 Difference]: Start difference. First operand 16849 states and 17437 transitions. Second operand 10 states. [2018-11-06 19:28:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:28:08,746 INFO L93 Difference]: Finished difference Result 43706 states and 45179 transitions. [2018-11-06 19:28:08,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-06 19:28:08,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1953 [2018-11-06 19:28:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:28:08,770 INFO L225 Difference]: With dead ends: 43706 [2018-11-06 19:28:08,770 INFO L226 Difference]: Without dead ends: 26859 [2018-11-06 19:28:08,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1983 GetRequests, 1963 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-11-06 19:28:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2018-11-06 19:28:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 21532. [2018-11-06 19:28:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21532 states. [2018-11-06 19:28:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21532 states to 21532 states and 22190 transitions. [2018-11-06 19:28:08,979 INFO L78 Accepts]: Start accepts. Automaton has 21532 states and 22190 transitions. Word has length 1953 [2018-11-06 19:28:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:28:08,980 INFO L480 AbstractCegarLoop]: Abstraction has 21532 states and 22190 transitions. [2018-11-06 19:28:08,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:28:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 21532 states and 22190 transitions. [2018-11-06 19:28:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2015 [2018-11-06 19:28:09,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:28:09,019 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:28:09,020 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:28:09,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:28:09,020 INFO L82 PathProgramCache]: Analyzing trace with hash -584879221, now seen corresponding path program 1 times [2018-11-06 19:28:09,020 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:28:09,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:28:09,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:09,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:09,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 3526 proven. 251 refuted. 0 times theorem prover too weak. 3806 trivial. 0 not checked. [2018-11-06 19:28:14,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:28:14,920 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:28:14,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:15,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:28:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 4163 proven. 0 refuted. 0 times theorem prover too weak. 3420 trivial. 0 not checked. [2018-11-06 19:28:17,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:28:17,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-11-06 19:28:17,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:28:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:28:17,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:28:17,250 INFO L87 Difference]: Start difference. First operand 21532 states and 22190 transitions. Second operand 9 states. [2018-11-06 19:28:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:28:23,710 INFO L93 Difference]: Finished difference Result 46100 states and 47518 transitions. [2018-11-06 19:28:23,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:28:23,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2014 [2018-11-06 19:28:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:28:23,739 INFO L225 Difference]: With dead ends: 46100 [2018-11-06 19:28:23,739 INFO L226 Difference]: Without dead ends: 24570 [2018-11-06 19:28:23,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 2017 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:28:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24570 states. [2018-11-06 19:28:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24570 to 23409. [2018-11-06 19:28:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23409 states. [2018-11-06 19:28:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23409 states to 23409 states and 23968 transitions. [2018-11-06 19:28:24,095 INFO L78 Accepts]: Start accepts. Automaton has 23409 states and 23968 transitions. Word has length 2014 [2018-11-06 19:28:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:28:24,096 INFO L480 AbstractCegarLoop]: Abstraction has 23409 states and 23968 transitions. [2018-11-06 19:28:24,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:28:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 23409 states and 23968 transitions. [2018-11-06 19:28:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2326 [2018-11-06 19:28:24,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:28:24,137 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 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, 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, 1, 1, 1, 1, 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 19:28:24,137 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:28:24,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:28:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1502877066, now seen corresponding path program 1 times [2018-11-06 19:28:24,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:28:24,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:28:24,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:24,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:24,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 4949 proven. 572 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-11-06 19:28:29,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:28:29,635 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:28:29,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:30,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:28:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 5054 proven. 467 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-11-06 19:28:33,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:28:33,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-11-06 19:28:33,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:28:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:28:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:28:33,929 INFO L87 Difference]: Start difference. First operand 23409 states and 23968 transitions. Second operand 9 states. [2018-11-06 19:28:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:28:39,284 INFO L93 Difference]: Finished difference Result 48579 states and 49761 transitions. [2018-11-06 19:28:39,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 19:28:39,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2325 [2018-11-06 19:28:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:28:39,312 INFO L225 Difference]: With dead ends: 48579 [2018-11-06 19:28:39,313 INFO L226 Difference]: Without dead ends: 26162 [2018-11-06 19:28:39,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2325 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-06 19:28:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26162 states. [2018-11-06 19:28:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26162 to 24697. [2018-11-06 19:28:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24697 states. [2018-11-06 19:28:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24697 states to 24697 states and 25223 transitions. [2018-11-06 19:28:39,580 INFO L78 Accepts]: Start accepts. Automaton has 24697 states and 25223 transitions. Word has length 2325 [2018-11-06 19:28:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:28:39,581 INFO L480 AbstractCegarLoop]: Abstraction has 24697 states and 25223 transitions. [2018-11-06 19:28:39,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:28:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 24697 states and 25223 transitions. [2018-11-06 19:28:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2348 [2018-11-06 19:28:39,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:28:39,622 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 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 19:28:39,622 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:28:39,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:28:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash -690427903, now seen corresponding path program 1 times [2018-11-06 19:28:39,623 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:28:39,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:28:39,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:39,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:39,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:41,455 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-11-06 19:28:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7621 proven. 4 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-11-06 19:28:46,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:28:46,835 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:28:46,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:28:47,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:28:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7378 proven. 247 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-11-06 19:28:52,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:28:52,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 12 [2018-11-06 19:28:52,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:28:52,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:28:52,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:28:52,654 INFO L87 Difference]: Start difference. First operand 24697 states and 25223 transitions. Second operand 12 states. [2018-11-06 19:28:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:28:56,611 INFO L93 Difference]: Finished difference Result 48576 states and 49623 transitions. [2018-11-06 19:28:56,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:28:56,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 2347 [2018-11-06 19:28:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:28:56,632 INFO L225 Difference]: With dead ends: 48576 [2018-11-06 19:28:56,633 INFO L226 Difference]: Without dead ends: 24871 [2018-11-06 19:28:56,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2348 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:28:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24871 states. [2018-11-06 19:28:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24871 to 23232. [2018-11-06 19:28:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23232 states. [2018-11-06 19:28:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23232 states to 23232 states and 23702 transitions. [2018-11-06 19:28:56,904 INFO L78 Accepts]: Start accepts. Automaton has 23232 states and 23702 transitions. Word has length 2347 [2018-11-06 19:28:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:28:56,907 INFO L480 AbstractCegarLoop]: Abstraction has 23232 states and 23702 transitions. [2018-11-06 19:28:56,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 19:28:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 23232 states and 23702 transitions. [2018-11-06 19:28:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2569 [2018-11-06 19:28:56,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:28:56,974 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 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 19:28:56,974 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:28:56,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:28:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1888161674, now seen corresponding path program 1 times [2018-11-06 19:28:56,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:28:56,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:28:56,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:56,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:28:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:28:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8715 proven. 1277 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-11-06 19:29:06,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:29:06,573 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:29:06,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:07,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:29:08,042 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-11-06 19:29:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8929 proven. 816 refuted. 0 times theorem prover too weak. 2233 trivial. 0 not checked. [2018-11-06 19:29:14,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:29:14,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-11-06 19:29:14,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 19:29:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 19:29:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-06 19:29:14,446 INFO L87 Difference]: Start difference. First operand 23232 states and 23702 transitions. Second operand 13 states. [2018-11-06 19:29:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:29:32,395 INFO L93 Difference]: Finished difference Result 50403 states and 51392 transitions. [2018-11-06 19:29:32,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-06 19:29:32,395 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2568 [2018-11-06 19:29:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:29:32,432 INFO L225 Difference]: With dead ends: 50403 [2018-11-06 19:29:32,432 INFO L226 Difference]: Without dead ends: 28163 [2018-11-06 19:29:32,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2602 GetRequests, 2574 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2018-11-06 19:29:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28163 states. [2018-11-06 19:29:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28163 to 24552. [2018-11-06 19:29:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24552 states. [2018-11-06 19:29:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24552 states to 24552 states and 25023 transitions. [2018-11-06 19:29:32,719 INFO L78 Accepts]: Start accepts. Automaton has 24552 states and 25023 transitions. Word has length 2568 [2018-11-06 19:29:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:29:32,721 INFO L480 AbstractCegarLoop]: Abstraction has 24552 states and 25023 transitions. [2018-11-06 19:29:32,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 19:29:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 24552 states and 25023 transitions. [2018-11-06 19:29:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2637 [2018-11-06 19:29:32,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:29:32,771 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 19:29:32,771 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:29:32,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:29:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1067427563, now seen corresponding path program 1 times [2018-11-06 19:29:32,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:29:32,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:29:32,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:32,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:32,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:34,440 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-11-06 19:29:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12807 backedges. 7768 proven. 48 refuted. 0 times theorem prover too weak. 4991 trivial. 0 not checked. [2018-11-06 19:29:38,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:29:38,055 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:29:38,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:38,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:29:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12807 backedges. 7780 proven. 0 refuted. 0 times theorem prover too weak. 5027 trivial. 0 not checked. [2018-11-06 19:29:45,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:29:45,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-11-06 19:29:45,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:29:45,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:29:45,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:29:45,511 INFO L87 Difference]: Start difference. First operand 24552 states and 25023 transitions. Second operand 7 states. Received shutdown request... [2018-11-06 19:29:50,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:29:50,384 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:29:50,390 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:29:50,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:29:50 BoogieIcfgContainer [2018-11-06 19:29:50,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:29:50,391 INFO L168 Benchmark]: Toolchain (without parser) took 227812.97 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,392 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:29:50,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1283.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 363.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,394 INFO L168 Benchmark]: Boogie Preprocessor took 162.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,395 INFO L168 Benchmark]: RCFGBuilder took 5707.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.7 MB). Peak memory consumption was 280.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,396 INFO L168 Benchmark]: TraceAbstraction took 220289.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -769.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:29:50,400 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1283.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 363.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5707.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.7 MB). Peak memory consumption was 280.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220289.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -769.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (24552states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (28829 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 220.2s OverallTime, 20 OverallIterations, 14 TraceHistogramMax, 114.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4370 SDtfs, 32523 SDslu, 2827 SDs, 0 SdLazy, 89769 SolverSat, 6375 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20068 GetRequests, 19870 SyntacticMatches, 29 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24697occurred in iteration=17, 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: 3.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 24373 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 54.1s InterpolantComputationTime, 44470 NumberOfCodeBlocks, 44470 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 44439 ConstructedInterpolants, 498 QuantifiedInterpolants, 325327385 SizeOfPredicates, 13 NumberOfNonLiveVariables, 22672 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 31 InterpolantComputations, 16 PerfectInterpolantSequences, 152012/156651 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown