java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:53:49,269 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:53:49,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:53:49,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:53:49,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:53:49,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:53:49,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:53:49,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:53:49,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:53:49,306 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:53:49,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:53:49,307 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:53:49,308 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:53:49,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:53:49,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:53:49,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:53:49,319 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:53:49,321 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:53:49,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:53:49,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:53:49,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:53:49,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:53:49,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:53:49,335 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:53:49,335 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:53:49,337 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:53:49,338 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:53:49,338 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:53:49,339 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:53:49,340 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:53:49,340 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:53:49,341 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:53:49,346 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 [2018-10-26 21:53:49,369 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:53:49,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:53:49,370 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:53:49,370 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:53:49,371 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:53:49,372 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:53:49,372 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:53:49,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:53:49,372 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:53:49,372 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:53:49,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:53:49,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:53:49,376 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:53:49,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:53:49,377 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:53:49,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:53:49,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:53:49,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:53:49,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:53:49,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:53:49,378 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:53:49,378 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:53:49,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:53:49,378 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:53:49,379 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:53:49,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:53:49,379 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:53:49,380 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:53:49,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:53:49,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:53:49,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:53:49,454 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:53:49,455 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:53:49,455 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-26 21:53:49,514 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6db95d2ec/4539a4c4e6bb45019386955ffc5b3dc0/FLAG6a1d354ea [2018-10-26 21:53:50,228 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:53:50,229 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-26 21:53:50,250 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6db95d2ec/4539a4c4e6bb45019386955ffc5b3dc0/FLAG6a1d354ea [2018-10-26 21:53:50,271 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6db95d2ec/4539a4c4e6bb45019386955ffc5b3dc0 [2018-10-26 21:53:50,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:53:50,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:53:50,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:50,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:53:50,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:53:50,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:50" (1/1) ... [2018-10-26 21:53:50,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b295a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:50, skipping insertion in model container [2018-10-26 21:53:50,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:50" (1/1) ... [2018-10-26 21:53:50,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:53:50,450 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:53:51,390 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:51,394 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:53:51,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:51,874 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:53:51,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51 WrapperNode [2018-10-26 21:53:51,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:51,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:51,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:53:51,876 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:53:51,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:51,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:52,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:53:52,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:53:52,425 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:53:52,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (1/1) ... [2018-10-26 21:53:52,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:53:52,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:53:52,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:53:52,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:53:52,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (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 [2018-10-26 21:53:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:53:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:53:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:54:01,681 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:54:01,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:54:01 BoogieIcfgContainer [2018-10-26 21:54:01,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:54:01,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:54:01,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:54:01,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:54:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:53:50" (1/3) ... [2018-10-26 21:54:01,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441a9c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:54:01, skipping insertion in model container [2018-10-26 21:54:01,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:51" (2/3) ... [2018-10-26 21:54:01,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441a9c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:54:01, skipping insertion in model container [2018-10-26 21:54:01,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:54:01" (3/3) ... [2018-10-26 21:54:01,691 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label39_true-unreach-call.c [2018-10-26 21:54:01,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:54:01,711 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:54:01,732 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:54:01,783 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:54:01,784 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:54:01,784 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:54:01,784 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:54:01,784 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:54:01,785 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:54:01,785 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:54:01,785 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:54:01,785 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:54:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:54:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-26 21:54:01,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:01,836 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:01,839 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:01,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:01,845 INFO L82 PathProgramCache]: Analyzing trace with hash -344880110, now seen corresponding path program 1 times [2018-10-26 21:54:01,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:01,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:01,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:01,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:01,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:02,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:02,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:02,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:54:02,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:54:02,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:02,428 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:54:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:11,220 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-26 21:54:11,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:54:11,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-26 21:54:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:11,253 INFO L225 Difference]: With dead ends: 2085 [2018-10-26 21:54:11,253 INFO L226 Difference]: Without dead ends: 1487 [2018-10-26 21:54:11,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-26 21:54:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-26 21:54:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-26 21:54:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-26 21:54:11,370 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 64 [2018-10-26 21:54:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:11,371 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-26 21:54:11,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:54:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-26 21:54:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-26 21:54:11,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:11,377 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:11,378 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:11,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:11,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1331898614, now seen corresponding path program 1 times [2018-10-26 21:54:11,378 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:11,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:11,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:11,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:11,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:11,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:11,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:11,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:54:11,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:54:11,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:11,665 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-26 21:54:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:24,804 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-26 21:54:24,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:54:24,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-26 21:54:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:24,815 INFO L225 Difference]: With dead ends: 2908 [2018-10-26 21:54:24,816 INFO L226 Difference]: Without dead ends: 1887 [2018-10-26 21:54:24,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-26 21:54:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-26 21:54:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-26 21:54:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-26 21:54:24,871 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 132 [2018-10-26 21:54:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:24,872 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-26 21:54:24,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:54:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-26 21:54:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-26 21:54:24,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:24,878 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:24,878 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:24,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1607588607, now seen corresponding path program 1 times [2018-10-26 21:54:24,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:24,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:24,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:24,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:24,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:25,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:54:25,248 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 [2018-10-26 21:54:25,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:25,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:54:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:25,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:54:25,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:54:25,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:54:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:54:25,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:54:25,714 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 6 states. [2018-10-26 21:54:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:42,372 INFO L93 Difference]: Finished difference Result 9400 states and 12734 transitions. [2018-10-26 21:54:42,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:54:42,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-26 21:54:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:42,401 INFO L225 Difference]: With dead ends: 9400 [2018-10-26 21:54:42,401 INFO L226 Difference]: Without dead ends: 5746 [2018-10-26 21:54:42,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:54:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2018-10-26 21:54:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5738. [2018-10-26 21:54:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5738 states. [2018-10-26 21:54:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 6855 transitions. [2018-10-26 21:54:42,517 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 6855 transitions. Word has length 135 [2018-10-26 21:54:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:42,517 INFO L481 AbstractCegarLoop]: Abstraction has 5738 states and 6855 transitions. [2018-10-26 21:54:42,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:54:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 6855 transitions. [2018-10-26 21:54:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-26 21:54:42,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:42,521 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:42,521 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:42,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1344223041, now seen corresponding path program 1 times [2018-10-26 21:54:42,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:42,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:42,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:42,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:42,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:42,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:42,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:42,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:54:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:54:42,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:54:42,755 INFO L87 Difference]: Start difference. First operand 5738 states and 6855 transitions. Second operand 3 states. [2018-10-26 21:54:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:45,710 INFO L93 Difference]: Finished difference Result 13608 states and 16656 transitions. [2018-10-26 21:54:45,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:54:45,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-26 21:54:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:45,746 INFO L225 Difference]: With dead ends: 13608 [2018-10-26 21:54:45,747 INFO L226 Difference]: Without dead ends: 8299 [2018-10-26 21:54:45,755 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 [2018-10-26 21:54:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2018-10-26 21:54:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 8299. [2018-10-26 21:54:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8299 states. [2018-10-26 21:54:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 9697 transitions. [2018-10-26 21:54:45,896 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 9697 transitions. Word has length 214 [2018-10-26 21:54:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:45,897 INFO L481 AbstractCegarLoop]: Abstraction has 8299 states and 9697 transitions. [2018-10-26 21:54:45,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:54:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 9697 transitions. [2018-10-26 21:54:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-26 21:54:45,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:45,902 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:54:45,902 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:45,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 857329193, now seen corresponding path program 1 times [2018-10-26 21:54:45,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:45,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:45,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-10-26 21:54:46,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:46,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:46,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:54:46,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:54:46,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:54:46,329 INFO L87 Difference]: Start difference. First operand 8299 states and 9697 transitions. Second operand 3 states. [2018-10-26 21:54:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:50,534 INFO L93 Difference]: Finished difference Result 20427 states and 24160 transitions. [2018-10-26 21:54:50,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:54:50,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 319 [2018-10-26 21:54:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:50,586 INFO L225 Difference]: With dead ends: 20427 [2018-10-26 21:54:50,586 INFO L226 Difference]: Without dead ends: 12556 [2018-10-26 21:54:50,598 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 [2018-10-26 21:54:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2018-10-26 21:54:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 12129. [2018-10-26 21:54:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12129 states. [2018-10-26 21:54:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12129 states to 12129 states and 13784 transitions. [2018-10-26 21:54:50,813 INFO L78 Accepts]: Start accepts. Automaton has 12129 states and 13784 transitions. Word has length 319 [2018-10-26 21:54:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:50,814 INFO L481 AbstractCegarLoop]: Abstraction has 12129 states and 13784 transitions. [2018-10-26 21:54:50,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:54:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12129 states and 13784 transitions. [2018-10-26 21:54:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-26 21:54:50,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:50,823 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:54:50,823 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:50,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1619990034, now seen corresponding path program 1 times [2018-10-26 21:54:50,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:50,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:50,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:50,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:50,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 291 proven. 83 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-26 21:54:51,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:54:51,443 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 [2018-10-26 21:54:51,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:51,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:54:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-10-26 21:54:51,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:54:51,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:54:51,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:54:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:54:51,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:54:51,886 INFO L87 Difference]: Start difference. First operand 12129 states and 13784 transitions. Second operand 6 states. [2018-10-26 21:55:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:12,435 INFO L93 Difference]: Finished difference Result 55429 states and 63296 transitions. [2018-10-26 21:55:12,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:55:12,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 337 [2018-10-26 21:55:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:12,524 INFO L225 Difference]: With dead ends: 55429 [2018-10-26 21:55:12,524 INFO L226 Difference]: Without dead ends: 36433 [2018-10-26 21:55:12,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:55:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36433 states. [2018-10-26 21:55:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36433 to 36409. [2018-10-26 21:55:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36409 states. [2018-10-26 21:55:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36409 states to 36409 states and 39288 transitions. [2018-10-26 21:55:13,214 INFO L78 Accepts]: Start accepts. Automaton has 36409 states and 39288 transitions. Word has length 337 [2018-10-26 21:55:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:13,215 INFO L481 AbstractCegarLoop]: Abstraction has 36409 states and 39288 transitions. [2018-10-26 21:55:13,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:55:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 36409 states and 39288 transitions. [2018-10-26 21:55:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-26 21:55:13,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:13,262 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-26 21:55:13,262 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:13,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:13,263 INFO L82 PathProgramCache]: Analyzing trace with hash 184256243, now seen corresponding path program 1 times [2018-10-26 21:55:13,263 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:13,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:13,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:13,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:13,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-26 21:55:13,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:55:13,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:55:13,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:55:13,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:55:13,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:55:13,934 INFO L87 Difference]: Start difference. First operand 36409 states and 39288 transitions. Second operand 3 states. [2018-10-26 21:55:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:18,073 INFO L93 Difference]: Finished difference Result 82186 states and 88896 transitions. [2018-10-26 21:55:18,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:55:18,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 663 [2018-10-26 21:55:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:18,133 INFO L225 Difference]: With dead ends: 82186 [2018-10-26 21:55:18,133 INFO L226 Difference]: Without dead ends: 46205 [2018-10-26 21:55:18,171 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 [2018-10-26 21:55:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46205 states. [2018-10-26 21:55:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46205 to 43643. [2018-10-26 21:55:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43643 states. [2018-10-26 21:55:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43643 states to 43643 states and 46945 transitions. [2018-10-26 21:55:19,111 INFO L78 Accepts]: Start accepts. Automaton has 43643 states and 46945 transitions. Word has length 663 [2018-10-26 21:55:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:19,112 INFO L481 AbstractCegarLoop]: Abstraction has 43643 states and 46945 transitions. [2018-10-26 21:55:19,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:55:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 43643 states and 46945 transitions. [2018-10-26 21:55:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-10-26 21:55:19,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:19,183 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:55:19,183 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:19,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:19,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1994359213, now seen corresponding path program 1 times [2018-10-26 21:55:19,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:19,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:19,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:19,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:19,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-26 21:55:19,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:55:19,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:55:19,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:55:19,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:55:19,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:55:19,816 INFO L87 Difference]: Start difference. First operand 43643 states and 46945 transitions. Second operand 3 states. [2018-10-26 21:55:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:24,889 INFO L93 Difference]: Finished difference Result 97933 states and 105351 transitions. [2018-10-26 21:55:24,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:55:24,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 688 [2018-10-26 21:55:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:24,972 INFO L225 Difference]: With dead ends: 97933 [2018-10-26 21:55:24,973 INFO L226 Difference]: Without dead ends: 54718 [2018-10-26 21:55:25,002 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 [2018-10-26 21:55:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54718 states. [2018-10-26 21:55:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54718 to 50032. [2018-10-26 21:55:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50032 states. [2018-10-26 21:55:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50032 states to 50032 states and 53603 transitions. [2018-10-26 21:55:26,071 INFO L78 Accepts]: Start accepts. Automaton has 50032 states and 53603 transitions. Word has length 688 [2018-10-26 21:55:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:26,072 INFO L481 AbstractCegarLoop]: Abstraction has 50032 states and 53603 transitions. [2018-10-26 21:55:26,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:55:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 50032 states and 53603 transitions. [2018-10-26 21:55:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-10-26 21:55:26,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:26,152 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-26 21:55:26,152 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:26,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash -414628312, now seen corresponding path program 1 times [2018-10-26 21:55:26,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:26,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:26,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:26,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:26,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 62 proven. 615 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 21:55:27,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:55:27,627 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 [2018-10-26 21:55:27,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:27,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:55:36,655 WARN L179 SmtUtils]: Spent 8.57 s on a formula simplification. DAG size of input: 135 DAG size of output: 30 [2018-10-26 21:55:39,317 WARN L179 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-10-26 21:56:35,388 WARN L179 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2018-10-26 21:56:36,379 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-26 21:56:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 491 proven. 186 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 21:56:45,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:56:45,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2018-10-26 21:56:45,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:56:45,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:56:45,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=119, Unknown=1, NotChecked=0, Total=156 [2018-10-26 21:56:45,129 INFO L87 Difference]: Start difference. First operand 50032 states and 53603 transitions. Second operand 13 states. Received shutdown request... [2018-10-26 21:57:59,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:57:59,930 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:57:59,934 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:57:59,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:57:59 BoogieIcfgContainer [2018-10-26 21:57:59,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:57:59,936 INFO L168 Benchmark]: Toolchain (without parser) took 249650.80 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -388.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,937 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:57:59,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1587.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 549.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,939 INFO L168 Benchmark]: Boogie Preprocessor took 238.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,940 INFO L168 Benchmark]: RCFGBuilder took 9018.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 459.5 MB). Peak memory consumption was 459.5 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,941 INFO L168 Benchmark]: TraceAbstraction took 238251.88 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -128.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-26 21:57:59,946 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1587.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 549.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 238.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9018.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 459.5 MB). Peak memory consumption was 459.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238251.88 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -128.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 197). Cancelled while BasicCegarLoop was constructing difference of abstraction (50032states) and FLOYD_HOARE automaton (currently 4 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (229 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 238.1s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 150.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3680 SDtfs, 7804 SDslu, 1433 SDs, 0 SdLazy, 23169 SolverSat, 4268 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 141.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1244 GetRequests, 1131 SyntacticMatches, 82 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 73.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50032occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 8171 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 81.0s InterpolantComputationTime, 4490 NumberOfCodeBlocks, 4490 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4478 ConstructedInterpolants, 464 QuantifiedInterpolants, 57960616 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1529 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 4895/5840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown