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/Problem13_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:06:54,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:06:54,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:06:54,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:06:54,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:06:54,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:06:54,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:06:54,482 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:06:54,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:06:54,485 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:06:54,486 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:06:54,486 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:06:54,487 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:06:54,488 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:06:54,489 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:06:54,490 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:06:54,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:06:54,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:06:54,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:06:54,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:06:54,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:06:54,499 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:06:54,502 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:06:54,502 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:06:54,502 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:06:54,503 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:06:54,504 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:06:54,505 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:06:54,506 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:06:54,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:06:54,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:06:54,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:06:54,516 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 18:06:54,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:06:54,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:06:54,545 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:06:54,545 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:06:54,546 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:06:54,546 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:06:54,546 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:06:54,546 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:06:54,547 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:06:54,547 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:06:54,547 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:06:54,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:06:54,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:06:54,548 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:06:54,548 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:06:54,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:06:54,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:06:54,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:06:54,549 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:06:54,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:06:54,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:06:54,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:06:54,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:06:54,549 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:06:54,550 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:06:54,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:06:54,550 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:06:54,550 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:06:54,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:06:54,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:06:54,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:06:54,636 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:06:54,636 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:06:54,637 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-23 18:06:54,718 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb117648d/513e5eadf55d41f589f8b1476f142708/FLAG53c3ee037 [2018-10-23 18:06:55,543 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:06:55,544 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-23 18:06:55,574 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb117648d/513e5eadf55d41f589f8b1476f142708/FLAG53c3ee037 [2018-10-23 18:06:55,593 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb117648d/513e5eadf55d41f589f8b1476f142708 [2018-10-23 18:06:55,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:06:55,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:06:55,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:06:55,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:06:55,617 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:06:55,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:06:55" (1/1) ... [2018-10-23 18:06:55,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d98767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:55, skipping insertion in model container [2018-10-23 18:06:55,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:06:55" (1/1) ... [2018-10-23 18:06:55,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:06:55,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:06:57,353 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:06:57,358 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:06:58,152 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:06:58,192 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:06:58,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58 WrapperNode [2018-10-23 18:06:58,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:06:58,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:06:58,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:06:58,196 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:06:58,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:58,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:06:59,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:06:59,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:06:59,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:06:59,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (1/1) ... [2018-10-23 18:06:59,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:06:59,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:06:59,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:06:59,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:06:59,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (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 18:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:06:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:07:13,245 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:07:13,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:07:13 BoogieIcfgContainer [2018-10-23 18:07:13,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:07:13,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:07:13,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:07:13,250 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:07:13,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:06:55" (1/3) ... [2018-10-23 18:07:13,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f38b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:07:13, skipping insertion in model container [2018-10-23 18:07:13,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:06:58" (2/3) ... [2018-10-23 18:07:13,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f38b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:07:13, skipping insertion in model container [2018-10-23 18:07:13,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:07:13" (3/3) ... [2018-10-23 18:07:13,255 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32_false-unreach-call.c [2018-10-23 18:07:13,263 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:07:13,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:07:13,285 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:07:13,329 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:07:13,330 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:07:13,330 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:07:13,330 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:07:13,330 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:07:13,330 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:07:13,331 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:07:13,331 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:07:13,331 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:07:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:07:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-23 18:07:13,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:13,378 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:13,381 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:13,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-23 18:07:13,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:13,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:13,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:13,597 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 18:07:13,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:13,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:07:13,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:07:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:07:13,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:13,619 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 3 states. [2018-10-23 18:07:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:24,276 INFO L93 Difference]: Finished difference Result 3038 states and 5646 transitions. [2018-10-23 18:07:24,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:07:24,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-23 18:07:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:24,319 INFO L225 Difference]: With dead ends: 3038 [2018-10-23 18:07:24,320 INFO L226 Difference]: Without dead ends: 1935 [2018-10-23 18:07:24,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2018-10-23 18:07:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1921. [2018-10-23 18:07:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2018-10-23 18:07:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3004 transitions. [2018-10-23 18:07:24,465 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3004 transitions. Word has length 9 [2018-10-23 18:07:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:24,466 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3004 transitions. [2018-10-23 18:07:24,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:07:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3004 transitions. [2018-10-23 18:07:24,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-23 18:07:24,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:24,469 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:07:24,470 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:24,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:24,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1950399385, now seen corresponding path program 1 times [2018-10-23 18:07:24,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:24,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:24,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:24,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:24,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:25,873 WARN L179 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:07:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:07:26,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:26,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:26,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:07:26,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:07:26,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:07:26,245 INFO L87 Difference]: Start difference. First operand 1921 states and 3004 transitions. Second operand 5 states. [2018-10-23 18:07:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:46,532 INFO L93 Difference]: Finished difference Result 7027 states and 10524 transitions. [2018-10-23 18:07:46,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:07:46,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2018-10-23 18:07:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:46,560 INFO L225 Difference]: With dead ends: 7027 [2018-10-23 18:07:46,561 INFO L226 Difference]: Without dead ends: 5108 [2018-10-23 18:07:46,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:07:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5108 states. [2018-10-23 18:07:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5108 to 5107. [2018-10-23 18:07:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2018-10-23 18:07:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 6806 transitions. [2018-10-23 18:07:46,668 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 6806 transitions. Word has length 82 [2018-10-23 18:07:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:46,668 INFO L481 AbstractCegarLoop]: Abstraction has 5107 states and 6806 transitions. [2018-10-23 18:07:46,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:07:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 6806 transitions. [2018-10-23 18:07:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 18:07:46,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:46,673 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:07:46,673 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:46,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1003534927, now seen corresponding path program 1 times [2018-10-23 18:07:46,675 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:46,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:46,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:46,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:46,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:07:46,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:46,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:46,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:07:46,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:07:46,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:07:46,899 INFO L87 Difference]: Start difference. First operand 5107 states and 6806 transitions. Second operand 5 states. [2018-10-23 18:08:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:04,163 INFO L93 Difference]: Finished difference Result 19981 states and 28104 transitions. [2018-10-23 18:08:04,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:08:04,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-10-23 18:08:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:04,232 INFO L225 Difference]: With dead ends: 19981 [2018-10-23 18:08:04,232 INFO L226 Difference]: Without dead ends: 15664 [2018-10-23 18:08:04,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15664 states. [2018-10-23 18:08:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15664 to 15507. [2018-10-23 18:08:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15507 states. [2018-10-23 18:08:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15507 states to 15507 states and 20533 transitions. [2018-10-23 18:08:04,526 INFO L78 Accepts]: Start accepts. Automaton has 15507 states and 20533 transitions. Word has length 106 [2018-10-23 18:08:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:04,527 INFO L481 AbstractCegarLoop]: Abstraction has 15507 states and 20533 transitions. [2018-10-23 18:08:04,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:08:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15507 states and 20533 transitions. [2018-10-23 18:08:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-23 18:08:04,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:04,534 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:08:04,534 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:04,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:04,535 INFO L82 PathProgramCache]: Analyzing trace with hash -152268787, now seen corresponding path program 1 times [2018-10-23 18:08:04,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:04,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:04,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:04,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:04,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 18:08:04,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:08:04,902 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 18:08:04,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:04,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:08:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:05,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:08:05,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:08:05,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:08:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:08:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:05,174 INFO L87 Difference]: Start difference. First operand 15507 states and 20533 transitions. Second operand 5 states. [2018-10-23 18:08:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:19,831 INFO L93 Difference]: Finished difference Result 67327 states and 91193 transitions. [2018-10-23 18:08:19,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:08:19,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-10-23 18:08:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:19,959 INFO L225 Difference]: With dead ends: 67327 [2018-10-23 18:08:19,959 INFO L226 Difference]: Without dead ends: 52610 [2018-10-23 18:08:19,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52610 states. [2018-10-23 18:08:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52610 to 38362. [2018-10-23 18:08:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38362 states. [2018-10-23 18:08:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38362 states to 38362 states and 48835 transitions. [2018-10-23 18:08:20,750 INFO L78 Accepts]: Start accepts. Automaton has 38362 states and 48835 transitions. Word has length 174 [2018-10-23 18:08:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:20,751 INFO L481 AbstractCegarLoop]: Abstraction has 38362 states and 48835 transitions. [2018-10-23 18:08:20,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:08:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 38362 states and 48835 transitions. [2018-10-23 18:08:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-23 18:08:20,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:20,758 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:20,758 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:20,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:20,759 INFO L82 PathProgramCache]: Analyzing trace with hash -4337762, now seen corresponding path program 1 times [2018-10-23 18:08:20,759 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:20,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:20,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:20,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:20,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-23 18:08:21,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:08:21,144 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 18:08:21,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:21,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:08:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:21,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:08:21,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:08:21,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:21,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:21,340 INFO L87 Difference]: Start difference. First operand 38362 states and 48835 transitions. Second operand 4 states. [2018-10-23 18:08:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:32,344 INFO L93 Difference]: Finished difference Result 113031 states and 144256 transitions. [2018-10-23 18:08:32,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:32,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-10-23 18:08:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:32,496 INFO L225 Difference]: With dead ends: 113031 [2018-10-23 18:08:32,496 INFO L226 Difference]: Without dead ends: 75459 [2018-10-23 18:08:32,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 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 18:08:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75459 states. [2018-10-23 18:08:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75459 to 58848. [2018-10-23 18:08:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58848 states. [2018-10-23 18:08:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58848 states to 58848 states and 72190 transitions. [2018-10-23 18:08:33,455 INFO L78 Accepts]: Start accepts. Automaton has 58848 states and 72190 transitions. Word has length 179 [2018-10-23 18:08:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:33,456 INFO L481 AbstractCegarLoop]: Abstraction has 58848 states and 72190 transitions. [2018-10-23 18:08:33,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 58848 states and 72190 transitions. [2018-10-23 18:08:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-23 18:08:33,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:33,460 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:33,460 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:33,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:33,461 INFO L82 PathProgramCache]: Analyzing trace with hash -895921421, now seen corresponding path program 1 times [2018-10-23 18:08:33,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:33,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:33,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:33,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:33,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-23 18:08:33,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:33,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:08:33,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:33,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:33,711 INFO L87 Difference]: Start difference. First operand 58848 states and 72190 transitions. Second operand 3 states. [2018-10-23 18:08:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:43,474 INFO L93 Difference]: Finished difference Result 160239 states and 197828 transitions. [2018-10-23 18:08:43,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:08:43,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-10-23 18:08:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:43,608 INFO L225 Difference]: With dead ends: 160239 [2018-10-23 18:08:43,609 INFO L226 Difference]: Without dead ends: 102181 [2018-10-23 18:08:43,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 18:08:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102181 states. [2018-10-23 18:08:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102181 to 102178. [2018-10-23 18:08:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102178 states. [2018-10-23 18:08:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102178 states to 102178 states and 119362 transitions. [2018-10-23 18:08:44,869 INFO L78 Accepts]: Start accepts. Automaton has 102178 states and 119362 transitions. Word has length 208 [2018-10-23 18:08:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:44,870 INFO L481 AbstractCegarLoop]: Abstraction has 102178 states and 119362 transitions. [2018-10-23 18:08:44,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:08:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 102178 states and 119362 transitions. [2018-10-23 18:08:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-23 18:08:44,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:44,881 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 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 18:08:44,881 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:44,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:44,882 INFO L82 PathProgramCache]: Analyzing trace with hash 642125967, now seen corresponding path program 1 times [2018-10-23 18:08:44,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:44,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:44,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:44,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:44,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 18:08:45,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:45,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:45,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:45,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:45,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:45,138 INFO L87 Difference]: Start difference. First operand 102178 states and 119362 transitions. Second operand 4 states. [2018-10-23 18:08:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:54,740 INFO L93 Difference]: Finished difference Result 246939 states and 290693 transitions. [2018-10-23 18:08:54,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:54,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2018-10-23 18:08:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:54,905 INFO L225 Difference]: With dead ends: 246939 [2018-10-23 18:08:54,906 INFO L226 Difference]: Without dead ends: 145551 [2018-10-23 18:08:54,969 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 18:08:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145551 states. [2018-10-23 18:08:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145551 to 143155. [2018-10-23 18:08:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143155 states. [2018-10-23 18:08:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143155 states to 143155 states and 162549 transitions. [2018-10-23 18:08:56,233 INFO L78 Accepts]: Start accepts. Automaton has 143155 states and 162549 transitions. Word has length 223 [2018-10-23 18:08:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:56,234 INFO L481 AbstractCegarLoop]: Abstraction has 143155 states and 162549 transitions. [2018-10-23 18:08:56,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 143155 states and 162549 transitions. [2018-10-23 18:08:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-23 18:08:56,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:56,244 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:56,244 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:56,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 27034144, now seen corresponding path program 1 times [2018-10-23 18:08:56,245 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:56,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:56,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:56,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:56,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:08:57,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:57,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:57,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:57,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:57,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:57,130 INFO L87 Difference]: Start difference. First operand 143155 states and 162549 transitions. Second operand 3 states. [2018-10-23 18:09:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:05,768 INFO L93 Difference]: Finished difference Result 327289 states and 375927 transitions. [2018-10-23 18:09:05,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:09:05,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2018-10-23 18:09:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:05,996 INFO L225 Difference]: With dead ends: 327289 [2018-10-23 18:09:05,997 INFO L226 Difference]: Without dead ends: 184924 [2018-10-23 18:09:06,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184924 states. [2018-10-23 18:09:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184924 to 183341. [2018-10-23 18:09:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183341 states. [2018-10-23 18:09:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183341 states to 183341 states and 204345 transitions. [2018-10-23 18:09:08,575 INFO L78 Accepts]: Start accepts. Automaton has 183341 states and 204345 transitions. Word has length 326 [2018-10-23 18:09:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:08,576 INFO L481 AbstractCegarLoop]: Abstraction has 183341 states and 204345 transitions. [2018-10-23 18:09:08,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:09:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 183341 states and 204345 transitions. [2018-10-23 18:09:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-23 18:09:08,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:08,588 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:08,588 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:08,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:08,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1034580145, now seen corresponding path program 1 times [2018-10-23 18:09:08,589 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:08,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:08,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:08,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:08,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-23 18:09:08,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:08,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:09:08,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:09:08,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:09:08,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:08,970 INFO L87 Difference]: Start difference. First operand 183341 states and 204345 transitions. Second operand 3 states. [2018-10-23 18:09:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:15,794 INFO L93 Difference]: Finished difference Result 365100 states and 407059 transitions. [2018-10-23 18:09:15,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:09:15,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2018-10-23 18:09:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:15,993 INFO L225 Difference]: With dead ends: 365100 [2018-10-23 18:09:15,993 INFO L226 Difference]: Without dead ends: 182549 [2018-10-23 18:09:16,088 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 18:09:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182549 states. [2018-10-23 18:09:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182549 to 180182. [2018-10-23 18:09:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180182 states. [2018-10-23 18:09:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180182 states to 180182 states and 195459 transitions. [2018-10-23 18:09:18,944 INFO L78 Accepts]: Start accepts. Automaton has 180182 states and 195459 transitions. Word has length 365 [2018-10-23 18:09:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:18,945 INFO L481 AbstractCegarLoop]: Abstraction has 180182 states and 195459 transitions. [2018-10-23 18:09:18,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:09:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 180182 states and 195459 transitions. [2018-10-23 18:09:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-23 18:09:18,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:18,955 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:09:18,955 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:18,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:18,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1130400858, now seen corresponding path program 1 times [2018-10-23 18:09:18,956 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:18,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:18,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:18,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:18,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:19,400 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:09:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-23 18:09:19,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:19,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:09:19,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:19,665 INFO L87 Difference]: Start difference. First operand 180182 states and 195459 transitions. Second operand 4 states. [2018-10-23 18:09:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:32,272 INFO L93 Difference]: Finished difference Result 376118 states and 408256 transitions. [2018-10-23 18:09:32,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:32,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2018-10-23 18:09:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:32,473 INFO L225 Difference]: With dead ends: 376118 [2018-10-23 18:09:32,473 INFO L226 Difference]: Without dead ends: 169852 [2018-10-23 18:09:32,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 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 18:09:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169852 states. [2018-10-23 18:09:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169852 to 152515. [2018-10-23 18:09:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152515 states. [2018-10-23 18:09:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152515 states to 152515 states and 163405 transitions. [2018-10-23 18:09:35,397 INFO L78 Accepts]: Start accepts. Automaton has 152515 states and 163405 transitions. Word has length 404 [2018-10-23 18:09:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:35,397 INFO L481 AbstractCegarLoop]: Abstraction has 152515 states and 163405 transitions. [2018-10-23 18:09:35,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 152515 states and 163405 transitions. [2018-10-23 18:09:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-10-23 18:09:35,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:35,406 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:35,406 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:35,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1769500804, now seen corresponding path program 1 times [2018-10-23 18:09:35,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:35,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:35,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:35,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:35,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2018-10-23 18:09:35,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:35,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:35,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:35,792 INFO L87 Difference]: Start difference. First operand 152515 states and 163405 transitions. Second operand 4 states. [2018-10-23 18:09:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:48,974 INFO L93 Difference]: Finished difference Result 333414 states and 359158 transitions. [2018-10-23 18:09:48,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:48,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2018-10-23 18:09:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:49,151 INFO L225 Difference]: With dead ends: 333414 [2018-10-23 18:09:49,151 INFO L226 Difference]: Without dead ends: 181689 [2018-10-23 18:09:49,188 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 18:09:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181689 states. [2018-10-23 18:09:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181689 to 181666. [2018-10-23 18:09:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181666 states. [2018-10-23 18:09:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181666 states to 181666 states and 192322 transitions. [2018-10-23 18:09:51,135 INFO L78 Accepts]: Start accepts. Automaton has 181666 states and 192322 transitions. Word has length 465 [2018-10-23 18:09:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:51,136 INFO L481 AbstractCegarLoop]: Abstraction has 181666 states and 192322 transitions. [2018-10-23 18:09:51,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 181666 states and 192322 transitions. [2018-10-23 18:09:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2018-10-23 18:09:51,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:51,231 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:51,231 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:51,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1687746051, now seen corresponding path program 1 times [2018-10-23 18:09:51,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:51,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:51,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:51,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:51,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-23 18:09:52,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:52,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:52,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:52,693 INFO L87 Difference]: Start difference. First operand 181666 states and 192322 transitions. Second operand 4 states. [2018-10-23 18:10:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:03,130 INFO L93 Difference]: Finished difference Result 355464 states and 376438 transitions. [2018-10-23 18:10:03,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:03,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1141 [2018-10-23 18:10:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:03,342 INFO L225 Difference]: With dead ends: 355464 [2018-10-23 18:10:03,343 INFO L226 Difference]: Without dead ends: 174588 [2018-10-23 18:10:03,417 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 18:10:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174588 states. [2018-10-23 18:10:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174588 to 173763. [2018-10-23 18:10:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173763 states. [2018-10-23 18:10:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173763 states to 173763 states and 180351 transitions. [2018-10-23 18:10:05,202 INFO L78 Accepts]: Start accepts. Automaton has 173763 states and 180351 transitions. Word has length 1141 [2018-10-23 18:10:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:05,203 INFO L481 AbstractCegarLoop]: Abstraction has 173763 states and 180351 transitions. [2018-10-23 18:10:05,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 173763 states and 180351 transitions. [2018-10-23 18:10:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2018-10-23 18:10:05,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:05,302 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:05,302 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:05,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:05,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2125039624, now seen corresponding path program 1 times [2018-10-23 18:10:05,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:05,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:05,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:05,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:05,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-23 18:10:07,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:07,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:07,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:07,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:07,209 INFO L87 Difference]: Start difference. First operand 173763 states and 180351 transitions. Second operand 4 states. [2018-10-23 18:10:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:20,880 INFO L93 Difference]: Finished difference Result 414601 states and 430173 transitions. [2018-10-23 18:10:20,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:20,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1172 [2018-10-23 18:10:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:21,143 INFO L225 Difference]: With dead ends: 414601 [2018-10-23 18:10:21,143 INFO L226 Difference]: Without dead ends: 241628 [2018-10-23 18:10:21,213 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 18:10:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241628 states. [2018-10-23 18:10:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241628 to 224203. [2018-10-23 18:10:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224203 states. [2018-10-23 18:10:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224203 states to 224203 states and 232417 transitions. [2018-10-23 18:10:23,883 INFO L78 Accepts]: Start accepts. Automaton has 224203 states and 232417 transitions. Word has length 1172 [2018-10-23 18:10:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:23,884 INFO L481 AbstractCegarLoop]: Abstraction has 224203 states and 232417 transitions. [2018-10-23 18:10:23,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 224203 states and 232417 transitions. [2018-10-23 18:10:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2018-10-23 18:10:23,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:23,949 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:23,949 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:23,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2067897461, now seen corresponding path program 1 times [2018-10-23 18:10:23,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:23,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:23,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:23,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:23,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 472 proven. 287 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-23 18:10:26,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:10:26,462 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 18:10:26,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:26,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:10:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2018-10-23 18:10:28,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:10:28,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:10:28,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:10:28,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:10:28,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:10:28,738 INFO L87 Difference]: Start difference. First operand 224203 states and 232417 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 18:10:44,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 18:10:44,306 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:10:44,313 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:10:44,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:10:44 BoogieIcfgContainer [2018-10-23 18:10:44,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:10:44,314 INFO L168 Benchmark]: Toolchain (without parser) took 228706.52 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -404.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,315 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:10:44,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2582.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 952.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.3 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -999.7 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,318 INFO L168 Benchmark]: Boogie Preprocessor took 654.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,318 INFO L168 Benchmark]: RCFGBuilder took 13443.56 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 253.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -21.9 MB). Peak memory consumption was 622.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,319 INFO L168 Benchmark]: TraceAbstraction took 211066.31 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 291.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:10:44,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2582.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 952.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.3 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -999.7 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 654.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13443.56 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 253.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -21.9 MB). Peak memory consumption was 622.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211066.31 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 291.1 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: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (224203states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (104920 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.9s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 176.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12173 SDtfs, 30486 SDslu, 3563 SDs, 0 SdLazy, 68684 SolverSat, 15934 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 143.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1593 GetRequests, 1546 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224203occurred in iteration=13, 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: 19.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 72990 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 7563 NumberOfCodeBlocks, 7563 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7546 ConstructedInterpolants, 90 QuantifiedInterpolants, 10938247 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1912 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 6231/6588 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown