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/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:46:10,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:46:10,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:46:10,434 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:46:10,434 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:46:10,435 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:46:10,436 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:46:10,438 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:46:10,440 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:46:10,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:46:10,441 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:46:10,442 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:46:10,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:46:10,444 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:46:10,445 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:46:10,445 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:46:10,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:46:10,448 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:46:10,450 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:46:10,452 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:46:10,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:46:10,454 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:46:10,457 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:46:10,466 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 [2018-10-22 15:46:10,489 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:46:10,489 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:46:10,491 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:46:10,491 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:46:10,492 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:46:10,492 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:46:10,492 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:46:10,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:46:10,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:46:10,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:46:10,496 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:46:10,497 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:46:10,497 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:46:10,497 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:46:10,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:46:10,498 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:46:10,498 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:46:10,498 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:46:10,498 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:46:10,498 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:46:10,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:46:10,499 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:46:10,499 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:46:10,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:46:10,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:46:10,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:46:10,565 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:46:10,566 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:46:10,567 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-22 15:46:10,630 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46c0455c/824b253959864c0bbc5a100dd7b6e757/FLAG3cb193308 [2018-10-22 15:46:11,076 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:46:11,077 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-22 15:46:11,086 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46c0455c/824b253959864c0bbc5a100dd7b6e757/FLAG3cb193308 [2018-10-22 15:46:11,107 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d46c0455c/824b253959864c0bbc5a100dd7b6e757 [2018-10-22 15:46:11,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:46:11,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:46:11,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:11,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:46:11,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:46:11,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16469e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11, skipping insertion in model container [2018-10-22 15:46:11,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:46:11,165 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:46:11,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:11,372 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:46:11,403 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:11,430 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:46:11,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11 WrapperNode [2018-10-22 15:46:11,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:11,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:11,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:46:11,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:46:11,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:11,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:46:11,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:46:11,479 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:46:11,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (1/1) ... [2018-10-22 15:46:11,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:46:11,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:46:11,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:46:11,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:46:11,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (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 [2018-10-22 15:46:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:46:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:46:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-22 15:46:12,057 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:46:12,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:12 BoogieIcfgContainer [2018-10-22 15:46:12,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:46:12,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:46:12,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:46:12,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:46:12,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:46:11" (1/3) ... [2018-10-22 15:46:12,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42094835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:12, skipping insertion in model container [2018-10-22 15:46:12,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:11" (2/3) ... [2018-10-22 15:46:12,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42094835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:12, skipping insertion in model container [2018-10-22 15:46:12,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:12" (3/3) ... [2018-10-22 15:46:12,078 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-22 15:46:12,088 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:46:12,098 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:46:12,115 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:46:12,148 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:46:12,149 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:46:12,149 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:46:12,149 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:46:12,149 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:46:12,149 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:46:12,149 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:46:12,150 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:46:12,150 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:46:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-22 15:46:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:46:12,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:12,170 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:12,173 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:12,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash 781418611, now seen corresponding path program 1 times [2018-10-22 15:46:12,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:12,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:12,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:12,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:12,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:12,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:46:12,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:46:12,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:46:12,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:46:12,341 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-22 15:46:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:12,359 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-10-22 15:46:12,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:46:12,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-22 15:46:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:12,372 INFO L225 Difference]: With dead ends: 40 [2018-10-22 15:46:12,372 INFO L226 Difference]: Without dead ends: 18 [2018-10-22 15:46:12,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:46:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-22 15:46:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-22 15:46:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-22 15:46:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-10-22 15:46:12,416 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2018-10-22 15:46:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:12,417 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-10-22 15:46:12,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:46:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-10-22 15:46:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 15:46:12,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:12,418 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:12,418 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:12,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:12,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1279355689, now seen corresponding path program 1 times [2018-10-22 15:46:12,419 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:12,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:12,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:12,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:12,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:12,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:46:12,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:46:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:46:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:46:12,608 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-10-22 15:46:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:12,740 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-10-22 15:46:12,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:46:12,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-22 15:46:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:12,741 INFO L225 Difference]: With dead ends: 33 [2018-10-22 15:46:12,741 INFO L226 Difference]: Without dead ends: 31 [2018-10-22 15:46:12,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:46:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-22 15:46:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2018-10-22 15:46:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 15:46:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-22 15:46:12,748 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2018-10-22 15:46:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:12,748 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-22 15:46:12,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:46:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-22 15:46:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 15:46:12,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:12,750 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:12,750 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:12,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1045835244, now seen corresponding path program 1 times [2018-10-22 15:46:12,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:12,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:12,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:12,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:12,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:12,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:46:12,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:46:12,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:46:12,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:46:12,827 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2018-10-22 15:46:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:12,906 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-10-22 15:46:12,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:46:12,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-22 15:46:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:12,907 INFO L225 Difference]: With dead ends: 53 [2018-10-22 15:46:12,907 INFO L226 Difference]: Without dead ends: 37 [2018-10-22 15:46:12,908 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 [2018-10-22 15:46:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-22 15:46:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2018-10-22 15:46:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-22 15:46:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-10-22 15:46:12,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2018-10-22 15:46:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:12,913 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-10-22 15:46:12,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:46:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-10-22 15:46:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-22 15:46:12,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:12,914 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:12,914 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:12,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:12,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1436282830, now seen corresponding path program 1 times [2018-10-22 15:46:12,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:12,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:12,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:12,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:13,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:13,115 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 [2018-10-22 15:46:13,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:13,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:13,365 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-22 15:46:13,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:46:13,381 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,396 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,420 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,420 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-10-22 15:46:13,468 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-22 15:46:13,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-22 15:46:13,472 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,482 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:13,483 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-10-22 15:46:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:13,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:13,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2018-10-22 15:46:13,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-22 15:46:13,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-22 15:46:13,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:46:13,621 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 10 states. [2018-10-22 15:46:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:14,913 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2018-10-22 15:46:14,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-22 15:46:14,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-22 15:46:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:14,919 INFO L225 Difference]: With dead ends: 154 [2018-10-22 15:46:14,919 INFO L226 Difference]: Without dead ends: 138 [2018-10-22 15:46:14,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-10-22 15:46:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-22 15:46:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 34. [2018-10-22 15:46:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-22 15:46:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-10-22 15:46:14,939 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2018-10-22 15:46:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:14,940 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-10-22 15:46:14,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-22 15:46:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-10-22 15:46:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-22 15:46:14,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:14,942 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:14,942 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:14,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1554630718, now seen corresponding path program 2 times [2018-10-22 15:46:14,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:14,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:14,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:14,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:14,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:15,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:15,285 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 [2018-10-22 15:46:15,297 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:46:15,326 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:46:15,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:46:15,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:15,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:15,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-10-22 15:46:15,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:46:15,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:46:15,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:15,396 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2018-10-22 15:46:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:15,673 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2018-10-22 15:46:15,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:46:15,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-10-22 15:46:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:15,677 INFO L225 Difference]: With dead ends: 112 [2018-10-22 15:46:15,677 INFO L226 Difference]: Without dead ends: 88 [2018-10-22 15:46:15,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-22 15:46:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 28. [2018-10-22 15:46:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-22 15:46:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-22 15:46:15,684 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2018-10-22 15:46:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:15,684 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-22 15:46:15,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:46:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-22 15:46:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-22 15:46:15,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:15,685 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:15,686 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:15,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2110104060, now seen corresponding path program 3 times [2018-10-22 15:46:15,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:15,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:15,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:15,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:46:15,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:20,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:20,097 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 [2018-10-22 15:46:20,113 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:46:20,236 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-22 15:46:20,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:46:20,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:20,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:20,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-10-22 15:46:20,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:46:20,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:46:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=85, Unknown=2, NotChecked=0, Total=110 [2018-10-22 15:46:20,347 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2018-10-22 15:46:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:20,559 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2018-10-22 15:46:20,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:46:20,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-10-22 15:46:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:20,562 INFO L225 Difference]: With dead ends: 121 [2018-10-22 15:46:20,562 INFO L226 Difference]: Without dead ends: 105 [2018-10-22 15:46:20,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=23, Invalid=85, Unknown=2, NotChecked=0, Total=110 [2018-10-22 15:46:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-22 15:46:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 30. [2018-10-22 15:46:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-22 15:46:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-22 15:46:20,568 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-10-22 15:46:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:20,569 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-22 15:46:20,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:46:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-22 15:46:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-22 15:46:20,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:20,570 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:20,570 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:20,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:20,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2047042998, now seen corresponding path program 4 times [2018-10-22 15:46:20,571 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:20,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:20,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:20,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:46:20,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:24,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:24,828 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 [2018-10-22 15:46:24,838 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:46:24,887 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:46:24,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:46:24,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:25,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:25,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-22 15:46:25,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 15:46:25,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 15:46:25,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=127, Unknown=1, NotChecked=0, Total=156 [2018-10-22 15:46:25,140 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 13 states. [2018-10-22 15:46:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:25,507 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2018-10-22 15:46:25,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:46:25,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-10-22 15:46:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:25,511 INFO L225 Difference]: With dead ends: 138 [2018-10-22 15:46:25,512 INFO L226 Difference]: Without dead ends: 122 [2018-10-22 15:46:25,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=28, Invalid=127, Unknown=1, NotChecked=0, Total=156 [2018-10-22 15:46:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-22 15:46:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 32. [2018-10-22 15:46:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-22 15:46:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-10-22 15:46:25,522 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 25 [2018-10-22 15:46:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:25,522 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-10-22 15:46:25,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 15:46:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-10-22 15:46:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 15:46:25,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:25,527 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:25,527 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:25,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1574904560, now seen corresponding path program 5 times [2018-10-22 15:46:25,528 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:25,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:25,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:25,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:46:25,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:28,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:28,860 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 [2018-10-22 15:46:28,868 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:46:30,345 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-22 15:46:30,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:46:30,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:30,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:30,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-22 15:46:30,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-22 15:46:30,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-22 15:46:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=176, Unknown=1, NotChecked=0, Total=210 [2018-10-22 15:46:30,463 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 15 states. [2018-10-22 15:46:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:30,838 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-10-22 15:46:30,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 15:46:30,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-10-22 15:46:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:30,840 INFO L225 Difference]: With dead ends: 155 [2018-10-22 15:46:30,840 INFO L226 Difference]: Without dead ends: 139 [2018-10-22 15:46:30,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=33, Invalid=176, Unknown=1, NotChecked=0, Total=210 [2018-10-22 15:46:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-22 15:46:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 34. [2018-10-22 15:46:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-22 15:46:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-22 15:46:30,847 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2018-10-22 15:46:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:30,847 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-22 15:46:30,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-22 15:46:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-22 15:46:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-22 15:46:30,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:30,848 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:30,849 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:30,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1178568278, now seen corresponding path program 6 times [2018-10-22 15:46:30,849 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:30,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:30,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:30,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:46:30,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:34,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:34,528 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:34,544 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-22 15:46:41,194 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-22 15:46:41,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:46:41,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:41,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-22 15:46:41,290 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:46:41,291 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,292 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,298 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,299 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2018-10-22 15:46:41,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-22 15:46:41,347 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:46:41,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-22 15:46:41,350 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,370 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2018-10-22 15:46:41,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-10-22 15:46:41,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2018-10-22 15:46:41,436 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-22 15:46:41,460 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:41,494 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:41,495 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:41 [2018-10-22 15:46:41,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2018-10-22 15:46:41,631 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:46:41,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-22 15:46:41,634 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2018-10-22 15:46:41,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-22 15:46:41,705 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,717 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,750 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:41,751 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:84, output treesize:44 [2018-10-22 15:46:41,878 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2018-10-22 15:46:41,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-22 15:46:41,885 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,934 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:41,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2018-10-22 15:46:41,994 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:46:41,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-22 15:46:41,998 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,020 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,054 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:42,054 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:94, output treesize:54 [2018-10-22 15:46:42,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2018-10-22 15:46:42,190 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:46:42,202 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-10-22 15:46:42,202 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,247 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2018-10-22 15:46:42,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:46:42,326 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,337 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:42,378 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:96, output treesize:52 [2018-10-22 15:46:42,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2018-10-22 15:46:42,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-22 15:46:42,475 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,489 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 59 [2018-10-22 15:46:42,576 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:46:42,581 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-22 15:46:42,582 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,615 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:46:42,660 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:46:42,660 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:104, output treesize:59 [2018-10-22 15:46:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:43,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:46:43,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-10-22 15:46:43,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-22 15:46:43,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-22 15:46:43,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=368, Unknown=1, NotChecked=0, Total=420 [2018-10-22 15:46:43,119 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 21 states. [2018-10-22 15:46:54,152 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 18 [2018-10-22 15:46:57,099 WARN L179 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 18 [2018-10-22 15:47:01,458 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 19 [2018-10-22 15:47:03,851 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 19 [2018-10-22 15:47:07,269 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2018-10-22 15:47:44,143 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-22 15:47:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:44,173 INFO L93 Difference]: Finished difference Result 181 states and 194 transitions. [2018-10-22 15:47:44,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-22 15:47:44,173 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2018-10-22 15:47:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:44,174 INFO L225 Difference]: With dead ends: 181 [2018-10-22 15:47:44,174 INFO L226 Difference]: Without dead ends: 165 [2018-10-22 15:47:44,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=139, Invalid=788, Unknown=3, NotChecked=0, Total=930 [2018-10-22 15:47:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-22 15:47:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 41. [2018-10-22 15:47:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-22 15:47:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-22 15:47:44,183 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2018-10-22 15:47:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:44,183 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-22 15:47:44,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-22 15:47:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-22 15:47:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-22 15:47:44,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:44,185 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:44,185 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:44,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:44,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1032245036, now seen corresponding path program 1 times [2018-10-22 15:47:44,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:44,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:44,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:44,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:47:44,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:47:50,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:47:50,645 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:47:50,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:50,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:47:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:47:50,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:47:50,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-10-22 15:47:50,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-22 15:47:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-22 15:47:50,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=297, Unknown=2, NotChecked=0, Total=342 [2018-10-22 15:47:50,892 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 19 states. [2018-10-22 15:47:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:52,331 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2018-10-22 15:47:52,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:47:52,331 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2018-10-22 15:47:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:52,332 INFO L225 Difference]: With dead ends: 188 [2018-10-22 15:47:52,333 INFO L226 Difference]: Without dead ends: 167 [2018-10-22 15:47:52,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=43, Invalid=297, Unknown=2, NotChecked=0, Total=342 [2018-10-22 15:47:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-22 15:47:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 43. [2018-10-22 15:47:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-22 15:47:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-22 15:47:52,340 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-22 15:47:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:52,340 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-22 15:47:52,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-22 15:47:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-22 15:47:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-22 15:47:52,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:52,341 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:52,342 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:52,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 421009498, now seen corresponding path program 2 times [2018-10-22 15:47:52,342 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:52,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:52,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:52,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:52,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:47:56,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:47:56,590 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:47:56,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:47:56,637 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:47:56,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:47:56,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:47:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:47:56,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:47:56,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-10-22 15:47:56,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-22 15:47:56,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-22 15:47:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-10-22 15:47:56,812 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 21 states. [2018-10-22 15:47:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:57,821 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2018-10-22 15:47:57,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:47:57,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-10-22 15:47:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:57,823 INFO L225 Difference]: With dead ends: 205 [2018-10-22 15:47:57,823 INFO L226 Difference]: Without dead ends: 184 [2018-10-22 15:47:57,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-10-22 15:47:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-22 15:47:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 45. [2018-10-22 15:47:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-22 15:47:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-22 15:47:57,832 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-22 15:47:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:57,833 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-22 15:47:57,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-22 15:47:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-22 15:47:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-22 15:47:57,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:57,834 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:57,834 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:57,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:57,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1134245472, now seen corresponding path program 3 times [2018-10-22 15:47:57,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:57,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:57,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:57,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:47:57,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:48:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:48:12,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:48:12,628 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:48:12,636 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:49:10,111 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-22 15:49:10,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:49:10,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:49:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:49:10,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:49:10,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-10-22 15:49:10,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-22 15:49:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-22 15:49:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=449, Unknown=4, NotChecked=0, Total=506 [2018-10-22 15:49:10,407 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 23 states. [2018-10-22 15:49:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:49:11,273 INFO L93 Difference]: Finished difference Result 222 states and 236 transitions. [2018-10-22 15:49:11,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:49:11,273 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-22 15:49:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:49:11,274 INFO L225 Difference]: With dead ends: 222 [2018-10-22 15:49:11,274 INFO L226 Difference]: Without dead ends: 201 [2018-10-22 15:49:11,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=53, Invalid=449, Unknown=4, NotChecked=0, Total=506 [2018-10-22 15:49:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-22 15:49:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 47. [2018-10-22 15:49:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-22 15:49:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-22 15:49:11,282 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-22 15:49:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:49:11,283 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-22 15:49:11,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-22 15:49:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-22 15:49:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-22 15:49:11,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:49:11,284 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:49:11,284 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:49:11,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:49:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash -640750874, now seen corresponding path program 4 times [2018-10-22 15:49:11,285 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:49:11,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:49:11,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:49:11,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:49:11,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:49:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:49:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:49:25,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:49:25,384 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:49:25,393 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:49:25,431 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:49:25,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:49:25,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:49:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:49:25,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:49:25,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-10-22 15:49:25,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-22 15:49:25,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-22 15:49:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=537, Unknown=5, NotChecked=0, Total=600 [2018-10-22 15:49:25,715 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 25 states. [2018-10-22 15:49:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:49:26,638 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2018-10-22 15:49:26,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 15:49:26,639 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-22 15:49:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:49:26,640 INFO L225 Difference]: With dead ends: 239 [2018-10-22 15:49:26,640 INFO L226 Difference]: Without dead ends: 218 [2018-10-22 15:49:26,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=58, Invalid=537, Unknown=5, NotChecked=0, Total=600 [2018-10-22 15:49:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-22 15:49:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 49. [2018-10-22 15:49:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-22 15:49:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-22 15:49:26,648 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-22 15:49:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:49:26,648 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-22 15:49:26,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-22 15:49:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-22 15:49:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-22 15:49:26,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:49:26,650 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:49:26,650 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:49:26,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:49:26,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1310222868, now seen corresponding path program 5 times [2018-10-22 15:49:26,650 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:49:26,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:49:26,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:49:26,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:49:26,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:49:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:49:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:49:39,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:49:39,813 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:49:39,821 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:50:51,864 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-22 15:50:51,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:52,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:50:53,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:53,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-10-22 15:50:53,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-22 15:50:53,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-22 15:50:53,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=634, Unknown=5, NotChecked=0, Total=702 [2018-10-22 15:50:53,163 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 27 states. Received shutdown request... [2018-10-22 15:50:53,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-22 15:50:53,452 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-22 15:50:53,457 WARN L205 ceAbstractionStarter]: Timeout [2018-10-22 15:50:53,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:50:53 BoogieIcfgContainer [2018-10-22 15:50:53,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:50:53,459 INFO L168 Benchmark]: Toolchain (without parser) took 282337.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -873.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:50:53,460 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-22 15:50:53,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:53,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:50:53,461 INFO L168 Benchmark]: Boogie Preprocessor took 42.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:50:53,461 INFO L168 Benchmark]: RCFGBuilder took 537.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:53,462 INFO L168 Benchmark]: TraceAbstraction took 281397.95 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 137.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -119.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2018-10-22 15:50:53,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 537.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 281397.95 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 137.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -119.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (49states) and FLOYD_HOARE automaton (currently 15 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (28 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. TIMEOUT Result, 281.3s OverallTime, 14 OverallIterations, 13 TraceHistogramMax, 68.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 832 SDtfs, 2167 SDslu, 7378 SDs, 0 SdLazy, 5440 SolverSat, 189 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 54.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 283 SyntacticMatches, 15 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 82.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1170 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 138.3s SatisfiabilityAnalysisTime, 73.7s InterpolantComputationTime, 764 NumberOfCodeBlocks, 764 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 739 ConstructedInterpolants, 0 QuantifiedInterpolants, 113243 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1792 ConjunctsInSsa, 265 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 70/1514 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown