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_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:48:07,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:48:07,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:48:07,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:48:07,315 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:48:07,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:48:07,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:48:07,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:48:07,321 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:48:07,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:48:07,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:48:07,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:48:07,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:48:07,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:48:07,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:48:07,327 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:48:07,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:48:07,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:48:07,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:48:07,333 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:48:07,334 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:48:07,335 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:48:07,338 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:48:07,338 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:48:07,338 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:48:07,339 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:48:07,340 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:48:07,341 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:48:07,342 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:48:07,343 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:48:07,343 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:48:07,344 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:48:07,344 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:48:07,345 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:48:07,346 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:48:07,347 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:48:07,347 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 [2018-10-24 16:48:07,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:48:07,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:48:07,380 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:48:07,380 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:48:07,381 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:48:07,381 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:48:07,381 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:48:07,382 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:48:07,386 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:48:07,386 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:48:07,386 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:48:07,386 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:48:07,386 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:48:07,387 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:48:07,387 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:48:07,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:48:07,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:48:07,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:48:07,388 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:48:07,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:48:07,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:48:07,388 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:48:07,388 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:48:07,389 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:48:07,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:48:07,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:48:07,391 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:48:07,391 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:48:07,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:48:07,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:48:07,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:48:07,490 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:48:07,491 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:48:07,491 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-24 16:48:07,563 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/682caacd4/2862b4864bee48f9b1c2945be78db060/FLAG947c862aa [2018-10-24 16:48:08,311 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:48:08,312 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-24 16:48:08,340 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/682caacd4/2862b4864bee48f9b1c2945be78db060/FLAG947c862aa [2018-10-24 16:48:08,361 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/682caacd4/2862b4864bee48f9b1c2945be78db060 [2018-10-24 16:48:08,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:48:08,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:48:08,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:48:08,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:48:08,379 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:48:08,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:48:08" (1/1) ... [2018-10-24 16:48:08,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1803bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:08, skipping insertion in model container [2018-10-24 16:48:08,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:48:08" (1/1) ... [2018-10-24 16:48:08,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:48:08,508 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:48:09,596 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:48:09,601 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:48:10,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:48:10,027 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:48:10,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10 WrapperNode [2018-10-24 16:48:10,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:48:10,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:48:10,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:48:10,031 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:48:10,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:48:10,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:48:10,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:48:10,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:48:10,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (1/1) ... [2018-10-24 16:48:10,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:48:10,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:48:10,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:48:10,905 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:48:10,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (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 [2018-10-24 16:48:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:48:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:48:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:48:21,329 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:48:21,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:48:21 BoogieIcfgContainer [2018-10-24 16:48:21,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:48:21,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:48:21,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:48:21,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:48:21,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:48:08" (1/3) ... [2018-10-24 16:48:21,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59655a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:48:21, skipping insertion in model container [2018-10-24 16:48:21,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:10" (2/3) ... [2018-10-24 16:48:21,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59655a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:48:21, skipping insertion in model container [2018-10-24 16:48:21,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:48:21" (3/3) ... [2018-10-24 16:48:21,338 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label19_true-unreach-call.c [2018-10-24 16:48:21,348 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:48:21,362 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:48:21,380 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:48:21,428 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:48:21,428 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:48:21,429 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:48:21,429 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:48:21,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:48:21,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:48:21,429 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:48:21,429 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:48:21,430 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:48:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:48:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 16:48:21,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:21,470 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] [2018-10-24 16:48:21,473 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:21,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-10-24 16:48:21,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:21,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:21,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:21,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:21,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:22,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:48:22,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:48:22,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:48:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:48:22,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:48:22,067 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:48:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:48:34,214 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-24 16:48:34,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:48:34,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 16:48:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:48:34,249 INFO L225 Difference]: With dead ends: 2093 [2018-10-24 16:48:34,249 INFO L226 Difference]: Without dead ends: 1495 [2018-10-24 16:48:34,257 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 [2018-10-24 16:48:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-24 16:48:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-24 16:48:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-24 16:48:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-24 16:48:34,391 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 43 [2018-10-24 16:48:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:48:34,391 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-24 16:48:34,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:48:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-24 16:48:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 16:48:34,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:34,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:48:34,401 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:34,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1535990702, now seen corresponding path program 1 times [2018-10-24 16:48:34,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:34,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:34,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:34,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:34,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:34,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:48:34,735 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 [2018-10-24 16:48:34,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:34,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:48:35,090 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 11 [2018-10-24 16:48:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:35,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:48:35,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:48:35,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:48:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:48:35,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:48:35,305 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 6 states. [2018-10-24 16:49:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:49:32,570 INFO L93 Difference]: Finished difference Result 6904 states and 11016 transitions. [2018-10-24 16:49:32,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:49:32,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-24 16:49:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:49:32,599 INFO L225 Difference]: With dead ends: 6904 [2018-10-24 16:49:32,599 INFO L226 Difference]: Without dead ends: 5418 [2018-10-24 16:49:32,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:49:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2018-10-24 16:49:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4537. [2018-10-24 16:49:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4537 states. [2018-10-24 16:49:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 5864 transitions. [2018-10-24 16:49:32,705 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 5864 transitions. Word has length 114 [2018-10-24 16:49:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:49:32,705 INFO L481 AbstractCegarLoop]: Abstraction has 4537 states and 5864 transitions. [2018-10-24 16:49:32,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:49:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 5864 transitions. [2018-10-24 16:49:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 16:49:32,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:32,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:49:32,712 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:32,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:32,713 INFO L82 PathProgramCache]: Analyzing trace with hash 657229963, now seen corresponding path program 1 times [2018-10-24 16:49:32,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:32,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:32,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:32,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:32,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:49:33,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:49:33,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:49:33,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:49:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:49:33,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:49:33,027 INFO L87 Difference]: Start difference. First operand 4537 states and 5864 transitions. Second operand 4 states. [2018-10-24 16:49:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:49:43,232 INFO L93 Difference]: Finished difference Result 12054 states and 16329 transitions. [2018-10-24 16:49:43,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:49:43,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 16:49:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:49:43,401 INFO L225 Difference]: With dead ends: 12054 [2018-10-24 16:49:43,403 INFO L226 Difference]: Without dead ends: 7519 [2018-10-24 16:49:43,410 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 [2018-10-24 16:49:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2018-10-24 16:49:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 7505. [2018-10-24 16:49:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7505 states. [2018-10-24 16:49:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 9385 transitions. [2018-10-24 16:49:43,552 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 9385 transitions. Word has length 136 [2018-10-24 16:49:43,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:49:43,552 INFO L481 AbstractCegarLoop]: Abstraction has 7505 states and 9385 transitions. [2018-10-24 16:49:43,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:49:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 9385 transitions. [2018-10-24 16:49:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 16:49:43,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:43,561 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:49:43,562 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:43,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:43,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1681541234, now seen corresponding path program 1 times [2018-10-24 16:49:43,562 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:43,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:43,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:43,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:43,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-24 16:49:43,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:49:43,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:49:43,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:49:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:49:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:49:43,980 INFO L87 Difference]: Start difference. First operand 7505 states and 9385 transitions. Second operand 3 states. [2018-10-24 16:49:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:49:49,481 INFO L93 Difference]: Finished difference Result 21400 states and 26936 transitions. [2018-10-24 16:49:49,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:49:49,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-10-24 16:49:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:49:49,529 INFO L225 Difference]: With dead ends: 21400 [2018-10-24 16:49:49,529 INFO L226 Difference]: Without dead ends: 11303 [2018-10-24 16:49:49,542 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 [2018-10-24 16:49:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2018-10-24 16:49:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 11303. [2018-10-24 16:49:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11303 states. [2018-10-24 16:49:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11303 states to 11303 states and 12728 transitions. [2018-10-24 16:49:49,743 INFO L78 Accepts]: Start accepts. Automaton has 11303 states and 12728 transitions. Word has length 263 [2018-10-24 16:49:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:49:49,744 INFO L481 AbstractCegarLoop]: Abstraction has 11303 states and 12728 transitions. [2018-10-24 16:49:49,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:49:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11303 states and 12728 transitions. [2018-10-24 16:49:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-24 16:49:49,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:49,750 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:49:49,751 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:49,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:49,751 INFO L82 PathProgramCache]: Analyzing trace with hash -660376941, now seen corresponding path program 1 times [2018-10-24 16:49:49,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:49,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:49,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:49,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:49,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:50,284 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-24 16:49:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:49:50,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:49:50,512 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 [2018-10-24 16:49:50,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:50,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:49:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:49:50,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:49:50,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-24 16:49:50,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:49:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:49:50,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:49:50,880 INFO L87 Difference]: Start difference. First operand 11303 states and 12728 transitions. Second operand 8 states. [2018-10-24 16:49:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:49:59,157 INFO L93 Difference]: Finished difference Result 27784 states and 31770 transitions. [2018-10-24 16:49:59,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:49:59,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2018-10-24 16:49:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:49:59,208 INFO L225 Difference]: With dead ends: 27784 [2018-10-24 16:49:59,208 INFO L226 Difference]: Without dead ends: 16910 [2018-10-24 16:49:59,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:49:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16910 states. [2018-10-24 16:49:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16910 to 16838. [2018-10-24 16:49:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16838 states. [2018-10-24 16:49:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16838 states to 16838 states and 18625 transitions. [2018-10-24 16:49:59,466 INFO L78 Accepts]: Start accepts. Automaton has 16838 states and 18625 transitions. Word has length 276 [2018-10-24 16:49:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:49:59,467 INFO L481 AbstractCegarLoop]: Abstraction has 16838 states and 18625 transitions. [2018-10-24 16:49:59,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:49:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 16838 states and 18625 transitions. [2018-10-24 16:49:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-10-24 16:49:59,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:59,492 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:49:59,492 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:59,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash -283918418, now seen corresponding path program 1 times [2018-10-24 16:49:59,493 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:59,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:59,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:59,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:59,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:00,440 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 16:50:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 270 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:50:00,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:00,946 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 [2018-10-24 16:50:00,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:01,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:50:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 270 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:50:01,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:50:01,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-24 16:50:01,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:50:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:50:01,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:50:01,459 INFO L87 Difference]: Start difference. First operand 16838 states and 18625 transitions. Second operand 9 states. [2018-10-24 16:50:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:09,941 INFO L93 Difference]: Finished difference Result 35381 states and 39034 transitions. [2018-10-24 16:50:09,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:50:09,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 537 [2018-10-24 16:50:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:09,983 INFO L225 Difference]: With dead ends: 35381 [2018-10-24 16:50:09,983 INFO L226 Difference]: Without dead ends: 18545 [2018-10-24 16:50:10,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:50:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18545 states. [2018-10-24 16:50:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18545 to 18541. [2018-10-24 16:50:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18541 states. [2018-10-24 16:50:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18541 states to 18541 states and 20384 transitions. [2018-10-24 16:50:10,458 INFO L78 Accepts]: Start accepts. Automaton has 18541 states and 20384 transitions. Word has length 537 [2018-10-24 16:50:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:10,459 INFO L481 AbstractCegarLoop]: Abstraction has 18541 states and 20384 transitions. [2018-10-24 16:50:10,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:50:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18541 states and 20384 transitions. [2018-10-24 16:50:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-10-24 16:50:10,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:10,484 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:10,485 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:10,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash 665096032, now seen corresponding path program 1 times [2018-10-24 16:50:10,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:10,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:10,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:10,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:10,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:11,169 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:50:11,653 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 16:50:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 290 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:50:12,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:12,636 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:50:12,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:12,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:50:15,200 WARN L179 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 125 DAG size of output: 21 [2018-10-24 16:50:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-10-24 16:50:15,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:50:15,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-24 16:50:15,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:50:15,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:50:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:50:15,717 INFO L87 Difference]: Start difference. First operand 18541 states and 20384 transitions. Second operand 11 states. [2018-10-24 16:50:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:40,571 INFO L93 Difference]: Finished difference Result 56390 states and 62199 transitions. [2018-10-24 16:50:40,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:50:40,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 557 [2018-10-24 16:50:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:40,620 INFO L225 Difference]: With dead ends: 56390 [2018-10-24 16:50:40,620 INFO L226 Difference]: Without dead ends: 38703 [2018-10-24 16:50:40,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-10-24 16:50:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38703 states. [2018-10-24 16:50:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38703 to 36475. [2018-10-24 16:50:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36475 states. [2018-10-24 16:50:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36475 states to 36475 states and 39766 transitions. [2018-10-24 16:50:41,065 INFO L78 Accepts]: Start accepts. Automaton has 36475 states and 39766 transitions. Word has length 557 [2018-10-24 16:50:41,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:41,066 INFO L481 AbstractCegarLoop]: Abstraction has 36475 states and 39766 transitions. [2018-10-24 16:50:41,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:50:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 36475 states and 39766 transitions. [2018-10-24 16:50:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-10-24 16:50:41,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:41,118 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 16:50:41,119 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:41,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:41,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1686418898, now seen corresponding path program 1 times [2018-10-24 16:50:41,119 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:41,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:41,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:41,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:41,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 82 proven. 767 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 16:50:42,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:42,958 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:50:42,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:43,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:51:23,649 WARN L179 SmtUtils]: Spent 39.84 s on a formula simplification. DAG size of input: 869 DAG size of output: 120 [2018-10-24 16:51:27,203 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_18 Int) (v_prenex_58 Int)) (let ((.cse4 (* 9 v_prenex_18))) (let ((.cse0 (div .cse4 10))) (let ((.cse5 (mod .cse0 33))) (let ((.cse1 (* 5 .cse5))) (let ((.cse2 (* 9 v_prenex_58)) (.cse3 (mod (+ .cse1 3) 33))) (and (< .cse0 0) (< .cse1 855) (< .cse1 690) (= (mod .cse2 10) 0) (not (= .cse3 0)) (= (mod .cse4 10) 0) (not (= 0 .cse5)) (<= (+ c_~a14~0 549809) (div .cse2 10)) (<= (+ v_prenex_58 172) .cse3)))))))) (exists ((v_prenex_61 Int) (v_prenex_60 Int)) (let ((.cse11 (* 9 v_prenex_60))) (let ((.cse10 (div .cse11 10))) (let ((.cse7 (mod .cse10 33))) (let ((.cse9 (* 5 .cse7))) (let ((.cse6 (* 9 v_prenex_61)) (.cse8 (mod (+ .cse9 3) 33))) (and (not (= (mod .cse6 10) 0)) (not (= 0 .cse7)) (<= (+ v_prenex_61 172) .cse8) (< .cse9 855) (< .cse9 690) (< .cse10 0) (= (mod .cse11 10) 0) (<= (+ c_~a14~0 549808) (div .cse6 10)) (< .cse6 0) (not (= .cse8 0))))))))) (exists ((v_prenex_72 Int) (v_prenex_71 Int)) (let ((.cse13 (* 9 v_prenex_71))) (let ((.cse14 (+ (div .cse13 10) 1))) (let ((.cse16 (mod .cse14 33))) (let ((.cse12 (* 9 v_prenex_72)) (.cse15 (mod (+ (* 5 .cse16) 3) 33))) (and (<= (+ c_~a14~0 549808) (div .cse12 10)) (not (= (mod .cse13 10) 0)) (< .cse14 0) (< .cse12 0) (not (= (mod .cse12 10) 0)) (<= (+ v_prenex_72 139) .cse15) (= 0 .cse15) (not (= .cse16 0)) (< .cse13 0))))))) (exists ((v_prenex_84 Int) (v_prenex_83 Int)) (let ((.cse18 (* 9 v_prenex_83))) (let ((.cse21 (div .cse18 10))) (let ((.cse17 (* 5 (mod .cse21 33)))) (let ((.cse19 (* 9 v_prenex_84)) (.cse20 (mod (+ .cse17 3) 33))) (and (< .cse17 690) (<= 0 .cse18) (<= (+ c_~a14~0 549809) (div .cse19 10)) (<= (+ v_prenex_84 172) .cse20) (= (mod .cse19 10) 0) (not (= .cse20 0)) (<= 0 .cse21) (< .cse17 855))))))) (exists ((v_prenex_67 Int) (v_prenex_68 Int)) (let ((.cse26 (* 9 v_prenex_67))) (let ((.cse24 (div .cse26 10))) (let ((.cse25 (mod .cse24 33))) (let ((.cse22 (mod (+ (* 5 .cse25) 3) 33)) (.cse23 (* 9 v_prenex_68))) (and (<= (+ v_prenex_68 139) .cse22) (< .cse23 0) (= .cse22 0) (< .cse24 0) (not (= (mod .cse23 10) 0)) (not (= 0 .cse25)) (<= (+ c_~a14~0 549808) (div .cse23 10)) (= (mod .cse26 10) 0))))))) (exists ((v_prenex_79 Int) (v_prenex_80 Int)) (let ((.cse29 (* 9 v_prenex_80))) (let ((.cse28 (div .cse29 10))) (let ((.cse30 (mod .cse28 33))) (let ((.cse32 (* 5 .cse30))) (let ((.cse27 (mod (+ .cse32 3) 33)) (.cse31 (* 9 v_prenex_79))) (and (<= (+ v_prenex_79 172) .cse27) (< .cse28 0) (= (mod .cse29 10) 0) (not (= 0 .cse30)) (not (= .cse27 0)) (<= (+ c_~a14~0 549809) (div .cse31 10)) (<= 0 .cse31) (< .cse32 855) (< .cse32 690)))))))) (exists ((v_prenex_81 Int) (v_prenex_82 Int)) (let ((.cse34 (* 9 v_prenex_82))) (let ((.cse35 (+ (div .cse34 10) 1))) (let ((.cse37 (mod .cse35 33))) (let ((.cse36 (* 5 .cse37))) (let ((.cse38 (mod (+ .cse36 3) 33)) (.cse33 (* 9 v_prenex_81))) (and (not (= (mod .cse33 10) 0)) (< .cse34 0) (< .cse33 0) (< .cse35 0) (< .cse36 690) (< .cse36 855) (not (= .cse37 0)) (<= (+ v_prenex_81 172) .cse38) (not (= 0 .cse38)) (<= (+ c_~a14~0 549808) (div .cse33 10)) (not (= (mod .cse34 10) 0))))))))) (exists ((v_prenex_22 Int) (v_prenex_62 Int)) (let ((.cse43 (* 9 v_prenex_22))) (let ((.cse40 (div .cse43 10))) (let ((.cse41 (* 5 (mod .cse40 33)))) (let ((.cse39 (mod (+ .cse41 3) 33)) (.cse42 (* 9 v_prenex_62))) (and (<= (+ v_prenex_62 172) .cse39) (<= 0 .cse40) (< .cse41 855) (< .cse41 690) (<= 0 .cse42) (not (= .cse39 0)) (<= (+ c_~a14~0 549809) (div .cse42 10)) (<= 0 .cse43))))))) (exists ((v_prenex_66 Int) (v_prenex_65 Int)) (let ((.cse44 (* 9 v_prenex_65))) (let ((.cse48 (div .cse44 10))) (let ((.cse46 (mod .cse48 33))) (let ((.cse45 (mod (+ (* 5 .cse46) 3) 33)) (.cse47 (* 9 v_prenex_66))) (and (= (mod .cse44 10) 0) (= .cse45 0) (not (= 0 .cse46)) (<= (+ v_prenex_66 139) .cse45) (<= 0 .cse47) (< .cse48 0) (<= (+ c_~a14~0 549809) (div .cse47 10)))))))) (exists ((v_prenex_28 Int) (v_prenex_63 Int)) (let ((.cse53 (* 9 v_prenex_28))) (let ((.cse52 (div .cse53 10))) (let ((.cse51 (mod .cse52 33))) (let ((.cse50 (mod (+ (* 5 .cse51) 3) 33)) (.cse49 (* 9 v_prenex_63))) (and (<= (+ c_~a14~0 549809) (div .cse49 10)) (= .cse50 0) (<= (+ v_prenex_63 139) .cse50) (= (mod .cse49 10) 0) (not (= 0 .cse51)) (< .cse52 0) (= (mod .cse53 10) 0))))))) (exists ((v_prenex_44 Int) (v_~a14~0_1227 Int)) (let ((.cse54 (* 9 v_prenex_44))) (let ((.cse57 (div .cse54 10))) (let ((.cse56 (* 9 v_~a14~0_1227)) (.cse55 (mod (+ (* 5 (mod .cse57 33)) 3) 33))) (and (<= 0 .cse54) (= .cse55 0) (= (mod .cse56 10) 0) (<= (+ c_~a14~0 549809) (div .cse56 10)) (<= 0 .cse57) (<= (+ v_~a14~0_1227 139) .cse55)))))) (exists ((v_prenex_85 Int) (v_prenex_86 Int)) (let ((.cse60 (* 9 v_prenex_85))) (let ((.cse62 (div .cse60 10))) (let ((.cse61 (* 5 (mod .cse62 33)))) (let ((.cse58 (mod (+ .cse61 3) 33)) (.cse59 (* 9 v_prenex_86))) (and (not (= .cse58 0)) (<= (+ c_~a14~0 549808) (div .cse59 10)) (<= (+ v_prenex_86 172) .cse58) (<= 0 .cse60) (not (= (mod .cse59 10) 0)) (< .cse61 690) (<= 0 .cse62) (< .cse59 0) (< .cse61 855))))))) (exists ((v_prenex_76 Int) (v_prenex_75 Int)) (let ((.cse65 (* 9 v_prenex_75))) (let ((.cse67 (+ (div .cse65 10) 1))) (let ((.cse64 (mod .cse67 33))) (let ((.cse63 (mod (+ (* 5 .cse64) 3) 33)) (.cse66 (* 9 v_prenex_76))) (and (<= (+ v_prenex_76 139) .cse63) (not (= .cse64 0)) (not (= (mod .cse65 10) 0)) (< .cse65 0) (<= (+ c_~a14~0 549809) (div .cse66 10)) (= 0 .cse63) (= (mod .cse66 10) 0) (< .cse67 0))))))) (exists ((v_prenex_74 Int) (v_prenex_73 Int)) (let ((.cse71 (* 9 v_prenex_73))) (let ((.cse68 (div .cse71 10))) (let ((.cse69 (* 9 v_prenex_74)) (.cse70 (mod (+ (* 5 (mod .cse68 33)) 3) 33))) (and (<= 0 .cse68) (<= (+ c_~a14~0 549808) (div .cse69 10)) (= .cse70 0) (< .cse69 0) (not (= (mod .cse69 10) 0)) (<= (+ v_prenex_74 139) .cse70) (<= 0 .cse71)))))) (exists ((v_prenex_59 Int) (v_prenex_41 Int)) (let ((.cse74 (* 9 v_prenex_41))) (let ((.cse75 (+ (div .cse74 10) 1))) (let ((.cse76 (mod .cse75 33))) (let ((.cse73 (mod (+ (* 5 .cse76) 3) 33)) (.cse72 (* 9 v_prenex_59))) (and (<= 0 .cse72) (= 0 .cse73) (<= (+ v_prenex_59 139) .cse73) (not (= (mod .cse74 10) 0)) (< .cse74 0) (<= (+ c_~a14~0 549809) (div .cse72 10)) (< .cse75 0) (not (= .cse76 0)))))))) (exists ((v_prenex_78 Int) (v_prenex_77 Int)) (let ((.cse79 (* 9 v_prenex_77))) (let ((.cse80 (div .cse79 10))) (let ((.cse77 (* 9 v_prenex_78)) (.cse78 (mod (+ (* 5 (mod .cse80 33)) 3) 33))) (and (<= 0 .cse77) (<= (+ v_prenex_78 139) .cse78) (<= (+ c_~a14~0 549809) (div .cse77 10)) (= .cse78 0) (<= 0 .cse79) (<= 0 .cse80)))))) (exists ((v_prenex_64 Int) (v_prenex_50 Int)) (let ((.cse83 (* 9 v_prenex_50))) (let ((.cse84 (+ (div .cse83 10) 1))) (let ((.cse86 (mod .cse84 33))) (let ((.cse82 (* 5 .cse86))) (let ((.cse81 (* 9 v_prenex_64)) (.cse85 (mod (+ .cse82 3) 33))) (and (<= 0 .cse81) (< .cse82 690) (< .cse83 0) (< .cse84 0) (< .cse82 855) (<= (+ v_prenex_64 172) .cse85) (<= (+ c_~a14~0 549809) (div .cse81 10)) (not (= (mod .cse83 10) 0)) (not (= .cse86 0)) (not (= 0 .cse85))))))))) (exists ((v_prenex_69 Int) (v_prenex_70 Int)) (let ((.cse88 (* 9 v_prenex_69))) (let ((.cse89 (+ (div .cse88 10) 1))) (let ((.cse91 (mod .cse89 33))) (let ((.cse92 (* 5 .cse91))) (let ((.cse87 (mod (+ .cse92 3) 33)) (.cse90 (* 9 v_prenex_70))) (and (<= (+ v_prenex_70 172) .cse87) (not (= (mod .cse88 10) 0)) (< .cse89 0) (<= (+ c_~a14~0 549809) (div .cse90 10)) (not (= 0 .cse87)) (not (= .cse91 0)) (< .cse92 855) (< .cse88 0) (= (mod .cse90 10) 0) (< .cse92 690))))))))) is different from false [2018-10-24 16:51:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 41 not checked. [2018-10-24 16:51:44,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:51:44,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 16:51:44,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:51:44,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:51:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2018-10-24 16:51:44,385 INFO L87 Difference]: Start difference. First operand 36475 states and 39766 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 16:52:11,698 WARN L187 SmtUtils]: Removed 7 from assertion stack [2018-10-24 16:52:11,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:52:11,699 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:52:11,703 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:52:11,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:52:11 BoogieIcfgContainer [2018-10-24 16:52:11,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:52:11,704 INFO L168 Benchmark]: Toolchain (without parser) took 243331.24 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:52:11,705 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. [2018-10-24 16:52:11,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1653.22 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. [2018-10-24 16:52:11,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 528.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:11,707 INFO L168 Benchmark]: Boogie Preprocessor took 345.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:11,708 INFO L168 Benchmark]: RCFGBuilder took 10425.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 492.0 MB). Peak memory consumption was 492.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:11,709 INFO L168 Benchmark]: TraceAbstraction took 230372.61 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 695.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:11,714 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 1653.22 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 528.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 345.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10425.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 492.0 MB). Peak memory consumption was 492.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230372.61 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 695.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 134). Cancelled while BasicCegarLoop was constructing difference of abstraction (36475states) and FLOYD_HOARE automaton (currently 3 states, 9 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 154.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3363 SDtfs, 15261 SDslu, 2478 SDs, 0 SdLazy, 32883 SolverSat, 5394 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 116.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2268 GetRequests, 2212 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 49.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36475occurred in iteration=7, 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: 1.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 3206 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 70.4s InterpolantComputationTime, 4852 NumberOfCodeBlocks, 4852 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4839 ConstructedInterpolants, 464 QuantifiedInterpolants, 162021375 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2767 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 3121/4223 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown