java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:35:42,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:35:42,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:35:42,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:35:42,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:35:42,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:35:42,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:35:42,573 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:35:42,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:35:42,576 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:35:42,577 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:35:42,577 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:35:42,578 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:35:42,579 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:35:42,580 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:35:42,581 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:35:42,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:35:42,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:35:42,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:35:42,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:35:42,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:35:42,590 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:35:42,593 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:35:42,602 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:35:42,627 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:35:42,627 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:35:42,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:35:42,629 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:35:42,629 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:35:42,630 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:35:42,630 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:35:42,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:35:42,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:35:42,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:35:42,631 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:35:42,632 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:35:42,632 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:35:42,632 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:35:42,632 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:35:42,633 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:35:42,633 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:35:42,633 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:35:42,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:35:42,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:35:42,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:35:42,635 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:35:42,635 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:35:42,635 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:35:42,635 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:35:42,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:35:42,636 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:35:42,636 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:35:42,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:35:42,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:35:42,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:35:42,731 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:35:42,732 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:35:42,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-10-23 20:35:42,793 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f14668dc/01d078c0d7b548cf8594fbac32a3ddfa/FLAGf01b0453a [2018-10-23 20:35:43,440 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:35:43,443 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-10-23 20:35:43,462 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f14668dc/01d078c0d7b548cf8594fbac32a3ddfa/FLAGf01b0453a [2018-10-23 20:35:43,476 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f14668dc/01d078c0d7b548cf8594fbac32a3ddfa [2018-10-23 20:35:43,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:35:43,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:35:43,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:35:43,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:35:43,494 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:35:43,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:43" (1/1) ... [2018-10-23 20:35:43,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5c2a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:43, skipping insertion in model container [2018-10-23 20:35:43,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:43" (1/1) ... [2018-10-23 20:35:43,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:35:43,594 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:35:44,299 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:35:44,305 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:35:44,585 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:35:44,606 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:35:44,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44 WrapperNode [2018-10-23 20:35:44,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:35:44,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:35:44,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:35:44,608 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:35:44,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:44,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:44,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:35:44,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:35:44,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:35:44,921 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:35:44,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:44,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:44,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:44,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:45,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:45,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:45,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... [2018-10-23 20:35:45,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:35:45,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:35:45,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:35:45,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:35:45,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:35:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:35:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:35:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:35:51,978 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:35:51,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:51 BoogieIcfgContainer [2018-10-23 20:35:51,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:35:51,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:35:51,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:35:51,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:35:51,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:43" (1/3) ... [2018-10-23 20:35:51,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504bbbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:51, skipping insertion in model container [2018-10-23 20:35:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:44" (2/3) ... [2018-10-23 20:35:51,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504bbbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:51, skipping insertion in model container [2018-10-23 20:35:51,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:51" (3/3) ... [2018-10-23 20:35:51,990 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label02_true-unreach-call.c [2018-10-23 20:35:52,001 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:35:52,010 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:35:52,028 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:35:52,078 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:35:52,079 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:35:52,079 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:35:52,079 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:35:52,079 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:35:52,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:35:52,080 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:35:52,080 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:35:52,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:35:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-10-23 20:35:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-23 20:35:52,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:52,129 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:35:52,132 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:52,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:52,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-10-23 20:35:52,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:52,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:52,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:52,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:52,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:35:52,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:35:52,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:35:52,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:35:52,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:35:52,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:35:52,636 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-10-23 20:36:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:00,209 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-10-23 20:36:00,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:36:00,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-23 20:36:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:00,245 INFO L225 Difference]: With dead ends: 1473 [2018-10-23 20:36:00,245 INFO L226 Difference]: Without dead ends: 1069 [2018-10-23 20:36:00,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-23 20:36:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2018-10-23 20:36:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2018-10-23 20:36:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1914 transitions. [2018-10-23 20:36:00,365 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1914 transitions. Word has length 62 [2018-10-23 20:36:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:00,365 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1914 transitions. [2018-10-23 20:36:00,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:36:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1914 transitions. [2018-10-23 20:36:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 20:36:00,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:00,373 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:00,373 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:00,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1711155478, now seen corresponding path program 1 times [2018-10-23 20:36:00,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:00,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:00,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:00,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:00,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:36:00,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:00,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:36:00,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:36:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:36:00,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:00,714 INFO L87 Difference]: Start difference. First operand 1069 states and 1914 transitions. Second operand 4 states. [2018-10-23 20:36:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:07,274 INFO L93 Difference]: Finished difference Result 4116 states and 7498 transitions. [2018-10-23 20:36:07,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:36:07,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-23 20:36:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:07,292 INFO L225 Difference]: With dead ends: 4116 [2018-10-23 20:36:07,292 INFO L226 Difference]: Without dead ends: 3049 [2018-10-23 20:36:07,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-10-23 20:36:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3049. [2018-10-23 20:36:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2018-10-23 20:36:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4881 transitions. [2018-10-23 20:36:07,384 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4881 transitions. Word has length 129 [2018-10-23 20:36:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:07,385 INFO L481 AbstractCegarLoop]: Abstraction has 3049 states and 4881 transitions. [2018-10-23 20:36:07,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:36:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4881 transitions. [2018-10-23 20:36:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-23 20:36:07,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:07,401 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:07,401 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:07,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash -22839616, now seen corresponding path program 1 times [2018-10-23 20:36:07,402 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:07,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:07,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:07,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:07,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:08,064 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 20:36:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:36:08,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:08,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:36:08,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:36:08,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:36:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:36:08,436 INFO L87 Difference]: Start difference. First operand 3049 states and 4881 transitions. Second operand 7 states. [2018-10-23 20:36:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:16,681 INFO L93 Difference]: Finished difference Result 9395 states and 14329 transitions. [2018-10-23 20:36:16,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:36:16,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2018-10-23 20:36:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:16,719 INFO L225 Difference]: With dead ends: 9395 [2018-10-23 20:36:16,719 INFO L226 Difference]: Without dead ends: 6348 [2018-10-23 20:36:16,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:36:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-10-23 20:36:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6016. [2018-10-23 20:36:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2018-10-23 20:36:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8749 transitions. [2018-10-23 20:36:16,852 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8749 transitions. Word has length 197 [2018-10-23 20:36:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:16,853 INFO L481 AbstractCegarLoop]: Abstraction has 6016 states and 8749 transitions. [2018-10-23 20:36:16,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:36:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8749 transitions. [2018-10-23 20:36:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-23 20:36:16,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:16,863 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:16,869 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:16,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash 863114307, now seen corresponding path program 1 times [2018-10-23 20:36:16,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:16,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:16,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:16,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:16,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:17,306 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 20:36:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:36:17,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:17,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:36:17,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:36:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:36:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:36:17,685 INFO L87 Difference]: Start difference. First operand 6016 states and 8749 transitions. Second operand 7 states. [2018-10-23 20:36:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:23,588 INFO L93 Difference]: Finished difference Result 12419 states and 17899 transitions. [2018-10-23 20:36:23,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:36:23,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2018-10-23 20:36:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:23,617 INFO L225 Difference]: With dead ends: 12419 [2018-10-23 20:36:23,618 INFO L226 Difference]: Without dead ends: 6405 [2018-10-23 20:36:23,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:36:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2018-10-23 20:36:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 6346. [2018-10-23 20:36:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6346 states. [2018-10-23 20:36:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 9085 transitions. [2018-10-23 20:36:23,762 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 9085 transitions. Word has length 289 [2018-10-23 20:36:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:23,762 INFO L481 AbstractCegarLoop]: Abstraction has 6346 states and 9085 transitions. [2018-10-23 20:36:23,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:36:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 9085 transitions. [2018-10-23 20:36:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-23 20:36:23,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:23,770 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:23,770 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:23,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash -942626239, now seen corresponding path program 1 times [2018-10-23 20:36:23,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:23,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:23,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:23,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:23,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 20:36:24,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:24,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:36:24,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:36:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:36:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:24,165 INFO L87 Difference]: Start difference. First operand 6346 states and 9085 transitions. Second operand 4 states. [2018-10-23 20:36:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:26,421 INFO L93 Difference]: Finished difference Result 16980 states and 24791 transitions. [2018-10-23 20:36:26,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:36:26,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-10-23 20:36:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:26,466 INFO L225 Difference]: With dead ends: 16980 [2018-10-23 20:36:26,467 INFO L226 Difference]: Without dead ends: 10966 [2018-10-23 20:36:26,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2018-10-23 20:36:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 10966. [2018-10-23 20:36:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10966 states. [2018-10-23 20:36:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 14706 transitions. [2018-10-23 20:36:26,761 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 14706 transitions. Word has length 292 [2018-10-23 20:36:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:26,761 INFO L481 AbstractCegarLoop]: Abstraction has 10966 states and 14706 transitions. [2018-10-23 20:36:26,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:36:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 14706 transitions. [2018-10-23 20:36:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-23 20:36:26,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:26,773 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:26,774 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:26,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2090009867, now seen corresponding path program 1 times [2018-10-23 20:36:26,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:26,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:26,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:26,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:26,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:36:27,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:27,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:36:27,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:36:27,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:36:27,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:36:27,080 INFO L87 Difference]: Start difference. First operand 10966 states and 14706 transitions. Second operand 3 states. [2018-10-23 20:36:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:29,943 INFO L93 Difference]: Finished difference Result 26550 states and 35820 transitions. [2018-10-23 20:36:29,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:36:29,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 442 [2018-10-23 20:36:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:29,967 INFO L225 Difference]: With dead ends: 26550 [2018-10-23 20:36:29,968 INFO L226 Difference]: Without dead ends: 13585 [2018-10-23 20:36:29,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:36:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13585 states. [2018-10-23 20:36:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13585 to 13585. [2018-10-23 20:36:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13585 states. [2018-10-23 20:36:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 15126 transitions. [2018-10-23 20:36:30,158 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 15126 transitions. Word has length 442 [2018-10-23 20:36:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:30,158 INFO L481 AbstractCegarLoop]: Abstraction has 13585 states and 15126 transitions. [2018-10-23 20:36:30,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:36:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 15126 transitions. [2018-10-23 20:36:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-23 20:36:30,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:30,170 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:30,171 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:30,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1242359550, now seen corresponding path program 1 times [2018-10-23 20:36:30,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:30,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:30,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:30,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:30,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:36:30,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:30,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:36:30,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:36:30,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:36:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:30,624 INFO L87 Difference]: Start difference. First operand 13585 states and 15126 transitions. Second operand 4 states. [2018-10-23 20:36:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:33,536 INFO L93 Difference]: Finished difference Result 34428 states and 38496 transitions. [2018-10-23 20:36:33,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:36:33,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 458 [2018-10-23 20:36:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:33,570 INFO L225 Difference]: With dead ends: 34428 [2018-10-23 20:36:33,570 INFO L226 Difference]: Without dead ends: 20844 [2018-10-23 20:36:33,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:36:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20844 states. [2018-10-23 20:36:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20844 to 20184. [2018-10-23 20:36:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20184 states. [2018-10-23 20:36:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20184 states to 20184 states and 22019 transitions. [2018-10-23 20:36:33,848 INFO L78 Accepts]: Start accepts. Automaton has 20184 states and 22019 transitions. Word has length 458 [2018-10-23 20:36:33,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:33,849 INFO L481 AbstractCegarLoop]: Abstraction has 20184 states and 22019 transitions. [2018-10-23 20:36:33,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:36:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20184 states and 22019 transitions. [2018-10-23 20:36:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-23 20:36:33,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:33,863 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:33,863 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:33,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:33,864 INFO L82 PathProgramCache]: Analyzing trace with hash 872277918, now seen corresponding path program 1 times [2018-10-23 20:36:33,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:33,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:33,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:33,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:33,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:34,385 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 20:36:34,751 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-23 20:36:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 211 proven. 130 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 20:36:35,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:36:35,820 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:36:35,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:36,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:36:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-10-23 20:36:36,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:36:36,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2018-10-23 20:36:36,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:36:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:36:36,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:36:36,461 INFO L87 Difference]: Start difference. First operand 20184 states and 22019 transitions. Second operand 11 states. [2018-10-23 20:36:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:47,635 INFO L93 Difference]: Finished difference Result 47329 states and 51474 transitions. [2018-10-23 20:36:47,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 20:36:47,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 470 [2018-10-23 20:36:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:47,905 INFO L225 Difference]: With dead ends: 47329 [2018-10-23 20:36:47,905 INFO L226 Difference]: Without dead ends: 27477 [2018-10-23 20:36:47,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:36:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2018-10-23 20:36:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 25463. [2018-10-23 20:36:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25463 states. [2018-10-23 20:36:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25463 states to 25463 states and 27278 transitions. [2018-10-23 20:36:48,324 INFO L78 Accepts]: Start accepts. Automaton has 25463 states and 27278 transitions. Word has length 470 [2018-10-23 20:36:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:48,325 INFO L481 AbstractCegarLoop]: Abstraction has 25463 states and 27278 transitions. [2018-10-23 20:36:48,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:36:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 25463 states and 27278 transitions. [2018-10-23 20:36:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-23 20:36:48,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:48,338 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:48,338 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:48,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash -294745584, now seen corresponding path program 1 times [2018-10-23 20:36:48,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:48,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:48,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:48,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:48,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-10-23 20:36:49,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:36:49,455 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:36:49,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:49,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:36:50,593 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 32 [2018-10-23 20:36:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 240 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:36:51,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:36:51,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:36:51,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:36:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:36:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:36:51,599 INFO L87 Difference]: Start difference. First operand 25463 states and 27278 transitions. Second operand 8 states. [2018-10-23 20:36:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:59,374 INFO L93 Difference]: Finished difference Result 59638 states and 63685 transitions. [2018-10-23 20:36:59,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:36:59,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 478 [2018-10-23 20:36:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:59,420 INFO L225 Difference]: With dead ends: 59638 [2018-10-23 20:36:59,420 INFO L226 Difference]: Without dead ends: 34391 [2018-10-23 20:36:59,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:36:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34391 states. [2018-10-23 20:36:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34391 to 33730. [2018-10-23 20:36:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33730 states. [2018-10-23 20:36:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33730 states to 33730 states and 35827 transitions. [2018-10-23 20:36:59,844 INFO L78 Accepts]: Start accepts. Automaton has 33730 states and 35827 transitions. Word has length 478 [2018-10-23 20:36:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:59,845 INFO L481 AbstractCegarLoop]: Abstraction has 33730 states and 35827 transitions. [2018-10-23 20:36:59,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:36:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 33730 states and 35827 transitions. [2018-10-23 20:36:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-10-23 20:36:59,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:59,859 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:59,859 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:59,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:59,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1265973217, now seen corresponding path program 1 times [2018-10-23 20:36:59,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:59,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:59,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:59,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:59,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 20:37:00,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:00,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:37:00,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:37:00,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:37:00,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:37:00,755 INFO L87 Difference]: Start difference. First operand 33730 states and 35827 transitions. Second operand 4 states. [2018-10-23 20:37:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:02,798 INFO L93 Difference]: Finished difference Result 67128 states and 71320 transitions. [2018-10-23 20:37:02,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:37:02,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-10-23 20:37:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:02,838 INFO L225 Difference]: With dead ends: 67128 [2018-10-23 20:37:02,838 INFO L226 Difference]: Without dead ends: 33399 [2018-10-23 20:37:02,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:37:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33399 states. [2018-10-23 20:37:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33399 to 33399. [2018-10-23 20:37:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33399 states. [2018-10-23 20:37:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33399 states to 33399 states and 34920 transitions. [2018-10-23 20:37:03,213 INFO L78 Accepts]: Start accepts. Automaton has 33399 states and 34920 transitions. Word has length 583 [2018-10-23 20:37:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:03,214 INFO L481 AbstractCegarLoop]: Abstraction has 33399 states and 34920 transitions. [2018-10-23 20:37:03,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:37:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 33399 states and 34920 transitions. [2018-10-23 20:37:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-23 20:37:03,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:03,230 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 20:37:03,230 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:03,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash -906908027, now seen corresponding path program 1 times [2018-10-23 20:37:03,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:03,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:03,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:03,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-10-23 20:37:03,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:03,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:37:03,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:37:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:37:03,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:37:03,700 INFO L87 Difference]: Start difference. First operand 33399 states and 34920 transitions. Second operand 4 states. [2018-10-23 20:37:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:05,733 INFO L93 Difference]: Finished difference Result 66466 states and 69506 transitions. [2018-10-23 20:37:05,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:37:05,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 619 [2018-10-23 20:37:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:05,771 INFO L225 Difference]: With dead ends: 66466 [2018-10-23 20:37:05,772 INFO L226 Difference]: Without dead ends: 33399 [2018-10-23 20:37:05,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:37:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33399 states. [2018-10-23 20:37:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33399 to 32409. [2018-10-23 20:37:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32409 states. [2018-10-23 20:37:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32409 states to 32409 states and 33628 transitions. [2018-10-23 20:37:06,129 INFO L78 Accepts]: Start accepts. Automaton has 32409 states and 33628 transitions. Word has length 619 [2018-10-23 20:37:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:06,130 INFO L481 AbstractCegarLoop]: Abstraction has 32409 states and 33628 transitions. [2018-10-23 20:37:06,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:37:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 32409 states and 33628 transitions. [2018-10-23 20:37:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-10-23 20:37:06,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:06,145 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:37:06,146 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:06,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2144475065, now seen corresponding path program 1 times [2018-10-23 20:37:06,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:06,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:06,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:37:07,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:07,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:37:07,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:37:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:37:07,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:07,202 INFO L87 Difference]: Start difference. First operand 32409 states and 33628 transitions. Second operand 5 states. [2018-10-23 20:37:10,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:10,567 INFO L93 Difference]: Finished difference Result 73736 states and 76630 transitions. [2018-10-23 20:37:10,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:37:10,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 722 [2018-10-23 20:37:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:10,604 INFO L225 Difference]: With dead ends: 73736 [2018-10-23 20:37:10,604 INFO L226 Difference]: Without dead ends: 41659 [2018-10-23 20:37:10,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41659 states. [2018-10-23 20:37:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41659 to 37359. [2018-10-23 20:37:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37359 states. [2018-10-23 20:37:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37359 states to 37359 states and 38672 transitions. [2018-10-23 20:37:10,899 INFO L78 Accepts]: Start accepts. Automaton has 37359 states and 38672 transitions. Word has length 722 [2018-10-23 20:37:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:10,900 INFO L481 AbstractCegarLoop]: Abstraction has 37359 states and 38672 transitions. [2018-10-23 20:37:10,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:37:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37359 states and 38672 transitions. [2018-10-23 20:37:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-10-23 20:37:10,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:10,910 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:37:10,910 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:10,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1941804930, now seen corresponding path program 1 times [2018-10-23 20:37:10,911 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:10,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:10,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:10,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:10,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 587 proven. 312 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:37:12,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:12,001 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:12,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:12,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 802 proven. 97 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:37:12,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:37:12,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-23 20:37:12,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:37:12,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:37:12,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:37:12,801 INFO L87 Difference]: Start difference. First operand 37359 states and 38672 transitions. Second operand 7 states. [2018-10-23 20:37:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:17,424 INFO L93 Difference]: Finished difference Result 85293 states and 88205 transitions. [2018-10-23 20:37:17,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:37:17,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 727 [2018-10-23 20:37:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:17,473 INFO L225 Difference]: With dead ends: 85293 [2018-10-23 20:37:17,473 INFO L226 Difference]: Without dead ends: 47936 [2018-10-23 20:37:17,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 726 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:37:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47936 states. [2018-10-23 20:37:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47936 to 32399. [2018-10-23 20:37:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32399 states. [2018-10-23 20:37:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32399 states to 32399 states and 33451 transitions. [2018-10-23 20:37:17,800 INFO L78 Accepts]: Start accepts. Automaton has 32399 states and 33451 transitions. Word has length 727 [2018-10-23 20:37:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:17,801 INFO L481 AbstractCegarLoop]: Abstraction has 32399 states and 33451 transitions. [2018-10-23 20:37:17,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:37:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 32399 states and 33451 transitions. [2018-10-23 20:37:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2018-10-23 20:37:17,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:17,812 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:37:17,812 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:17,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash -22463942, now seen corresponding path program 1 times [2018-10-23 20:37:17,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:17,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:17,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:17,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:17,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:18,655 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-23 20:37:18,957 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-23 20:37:19,264 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:37:19,456 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2018-10-23 20:37:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 718 proven. 158 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-10-23 20:37:20,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:20,297 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:20,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:20,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 419 proven. 270 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2018-10-23 20:37:21,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:37:21,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2018-10-23 20:37:21,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 20:37:21,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 20:37:21,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:37:21,132 INFO L87 Difference]: Start difference. First operand 32399 states and 33451 transitions. Second operand 13 states. [2018-10-23 20:37:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:39,544 INFO L93 Difference]: Finished difference Result 78840 states and 81407 transitions. [2018-10-23 20:37:39,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-23 20:37:39,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 758 [2018-10-23 20:37:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:39,581 INFO L225 Difference]: With dead ends: 78840 [2018-10-23 20:37:39,581 INFO L226 Difference]: Without dead ends: 45759 [2018-10-23 20:37:39,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 754 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2018-10-23 20:37:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45759 states. [2018-10-23 20:37:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45759 to 34455. [2018-10-23 20:37:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34455 states. [2018-10-23 20:37:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34455 states to 34455 states and 35432 transitions. [2018-10-23 20:37:39,888 INFO L78 Accepts]: Start accepts. Automaton has 34455 states and 35432 transitions. Word has length 758 [2018-10-23 20:37:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:39,889 INFO L481 AbstractCegarLoop]: Abstraction has 34455 states and 35432 transitions. [2018-10-23 20:37:39,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 20:37:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 34455 states and 35432 transitions. [2018-10-23 20:37:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-10-23 20:37:39,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:39,900 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:37:39,900 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:39,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:39,901 INFO L82 PathProgramCache]: Analyzing trace with hash -690422455, now seen corresponding path program 1 times [2018-10-23 20:37:39,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:39,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:39,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:39,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:39,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 428 proven. 656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:37:41,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:41,050 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:41,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:41,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:52,082 WARN L179 SmtUtils]: Spent 10.63 s on a formula simplification. DAG size of input: 491 DAG size of output: 24 [2018-10-23 20:38:19,323 WARN L179 SmtUtils]: Spent 26.81 s on a formula simplification. DAG size of input: 743 DAG size of output: 41 [2018-10-23 20:38:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2018-10-23 20:38:20,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:38:20,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2018-10-23 20:38:20,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:38:20,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:38:20,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:38:20,882 INFO L87 Difference]: Start difference. First operand 34455 states and 35432 transitions. Second operand 11 states. [2018-10-23 20:38:25,969 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-23 20:38:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:38:59,563 INFO L93 Difference]: Finished difference Result 77824 states and 79955 transitions. [2018-10-23 20:38:59,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 20:38:59,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 784 [2018-10-23 20:38:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:38:59,612 INFO L225 Difference]: With dead ends: 77824 [2018-10-23 20:38:59,612 INFO L226 Difference]: Without dead ends: 42983 [2018-10-23 20:38:59,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-23 20:38:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42983 states. [2018-10-23 20:38:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42983 to 38094. [2018-10-23 20:38:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38094 states. [2018-10-23 20:38:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38094 states to 38094 states and 39101 transitions. [2018-10-23 20:38:59,932 INFO L78 Accepts]: Start accepts. Automaton has 38094 states and 39101 transitions. Word has length 784 [2018-10-23 20:38:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:38:59,932 INFO L481 AbstractCegarLoop]: Abstraction has 38094 states and 39101 transitions. [2018-10-23 20:38:59,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:38:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 38094 states and 39101 transitions. [2018-10-23 20:38:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-10-23 20:38:59,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:38:59,947 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:38:59,948 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:38:59,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:38:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash 198132673, now seen corresponding path program 1 times [2018-10-23 20:38:59,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:38:59,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:38:59,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:38:59,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:38:59,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:39:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:39:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2018-10-23 20:39:01,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:39:01,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:39:01,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:39:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:39:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:39:01,490 INFO L87 Difference]: Start difference. First operand 38094 states and 39101 transitions. Second operand 3 states. [2018-10-23 20:39:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:39:03,055 INFO L93 Difference]: Finished difference Result 75856 states and 77868 transitions. [2018-10-23 20:39:03,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:39:03,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1037 [2018-10-23 20:39:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:39:03,097 INFO L225 Difference]: With dead ends: 75856 [2018-10-23 20:39:03,097 INFO L226 Difference]: Without dead ends: 38094 [2018-10-23 20:39:03,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:39:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38094 states. [2018-10-23 20:39:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38094 to 36774. [2018-10-23 20:39:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36774 states. [2018-10-23 20:39:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36774 states to 36774 states and 37603 transitions. [2018-10-23 20:39:03,477 INFO L78 Accepts]: Start accepts. Automaton has 36774 states and 37603 transitions. Word has length 1037 [2018-10-23 20:39:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:39:03,478 INFO L481 AbstractCegarLoop]: Abstraction has 36774 states and 37603 transitions. [2018-10-23 20:39:03,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:39:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 36774 states and 37603 transitions. [2018-10-23 20:39:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2018-10-23 20:39:03,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:39:03,496 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:39:03,497 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:39:03,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:39:03,497 INFO L82 PathProgramCache]: Analyzing trace with hash -22070162, now seen corresponding path program 1 times [2018-10-23 20:39:03,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:39:03,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:39:03,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:39:03,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:39:03,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:39:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:39:04,890 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-23 20:39:05,156 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-23 20:39:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1830 proven. 161 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-10-23 20:39:07,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:39:07,820 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:39:07,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:39:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:39:08,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:39:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1754 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2018-10-23 20:39:10,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:39:10,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2018-10-23 20:39:10,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 20:39:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 20:39:10,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-10-23 20:39:10,085 INFO L87 Difference]: Start difference. First operand 36774 states and 37603 transitions. Second operand 15 states. [2018-10-23 20:39:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:39:21,605 INFO L93 Difference]: Finished difference Result 69916 states and 71530 transitions. [2018-10-23 20:39:21,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 20:39:21,606 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1177 [2018-10-23 20:39:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:39:21,645 INFO L225 Difference]: With dead ends: 69916 [2018-10-23 20:39:21,645 INFO L226 Difference]: Without dead ends: 33143 [2018-10-23 20:39:21,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1176 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2018-10-23 20:39:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33143 states. [2018-10-23 20:39:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33143 to 28418. [2018-10-23 20:39:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28418 states. [2018-10-23 20:39:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28418 states to 28418 states and 28899 transitions. [2018-10-23 20:39:21,964 INFO L78 Accepts]: Start accepts. Automaton has 28418 states and 28899 transitions. Word has length 1177 [2018-10-23 20:39:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:39:21,965 INFO L481 AbstractCegarLoop]: Abstraction has 28418 states and 28899 transitions. [2018-10-23 20:39:21,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-23 20:39:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 28418 states and 28899 transitions. [2018-10-23 20:39:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1222 [2018-10-23 20:39:21,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:39:21,983 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:39:21,983 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:39:21,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:39:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash 398383330, now seen corresponding path program 1 times [2018-10-23 20:39:21,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:39:21,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:39:21,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:39:21,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:39:21,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:39:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:39:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 955 proven. 60 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2018-10-23 20:39:23,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:39:23,494 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:39:23,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:39:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:39:23,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:39:24,054 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 25 [2018-10-23 20:39:34,416 WARN L179 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2018-10-23 20:39:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 957 proven. 58 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2018-10-23 20:39:36,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:39:36,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-23 20:39:36,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:39:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:39:36,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:39:36,598 INFO L87 Difference]: Start difference. First operand 28418 states and 28899 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 20:39:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:39:40,174 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:39:40,180 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:39:40,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:39:40 BoogieIcfgContainer [2018-10-23 20:39:40,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:39:40,181 INFO L168 Benchmark]: Toolchain (without parser) took 236695.31 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 1.6 GB in the end (delta: -200.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,182 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:39:40,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1118.66 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,185 INFO L168 Benchmark]: Boogie Preprocessor took 184.73 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,185 INFO L168 Benchmark]: RCFGBuilder took 6872.64 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: 285.1 MB). Peak memory consumption was 285.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,186 INFO L168 Benchmark]: TraceAbstraction took 228199.16 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 280.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:39:40,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1118.66 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.73 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6872.64 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: 285.1 MB). Peak memory consumption was 285.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228199.16 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 280.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (28418states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17194 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 18 OverallIterations, 7 TraceHistogramMax, 142.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3262 SDtfs, 41442 SDslu, 2510 SDs, 0 SdLazy, 75090 SolverSat, 7575 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 117.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5786 GetRequests, 5618 SyntacticMatches, 14 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 58.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38094occurred in iteration=15, 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: 4.4s AutomataMinimizationTime, 17 MinimizatonAttempts, 46791 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 69.3s InterpolantComputationTime, 16060 NumberOfCodeBlocks, 16060 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 16035 ConstructedInterpolants, 422 QuantifiedInterpolants, 65213046 SizeOfPredicates, 17 NumberOfNonLiveVariables, 6559 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 25 InterpolantComputations, 14 PerfectInterpolantSequences, 20526/22605 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown