java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:33:16,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:33:16,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:33:16,596 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:33:16,597 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:33:16,598 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:33:16,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:33:16,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:33:16,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:33:16,604 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:33:16,605 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:33:16,605 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:33:16,606 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:33:16,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:33:16,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:33:16,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:33:16,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:33:16,612 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:33:16,613 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:33:16,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:33:16,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:33:16,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:33:16,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:33:16,634 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:33:16,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:33:16,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:33:16,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:33:16,667 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:33:16,668 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:33:16,668 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:33:16,668 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:33:16,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:33:16,668 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:33:16,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:33:16,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:33:16,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:33:16,670 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:33:16,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:33:16,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:33:16,671 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:33:16,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:33:16,671 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:33:16,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:33:16,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:33:16,672 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:33:16,672 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:33:16,672 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:33:16,672 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:33:16,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:33:16,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:33:16,673 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:33:16,673 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:33:16,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:33:16,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:33:16,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:33:16,752 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:33:16,752 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:33:16,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-10-26 21:33:16,811 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f23c4e719/358078f61a26495bb44912f67897e379/FLAG78dc76996 [2018-10-26 21:33:17,419 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:33:17,420 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-10-26 21:33:17,433 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f23c4e719/358078f61a26495bb44912f67897e379/FLAG78dc76996 [2018-10-26 21:33:17,448 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f23c4e719/358078f61a26495bb44912f67897e379 [2018-10-26 21:33:17,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:33:17,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:33:17,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:33:17,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:33:17,465 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:33:17,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:33:17" (1/1) ... [2018-10-26 21:33:17,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4c09ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:17, skipping insertion in model container [2018-10-26 21:33:17,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:33:17" (1/1) ... [2018-10-26 21:33:17,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:33:17,541 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:33:18,045 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:33:18,051 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:33:18,218 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:33:18,237 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:33:18,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18 WrapperNode [2018-10-26 21:33:18,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:33:18,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:33:18,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:33:18,239 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:33:18,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:33:18,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:33:18,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:33:18,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:33:18,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... [2018-10-26 21:33:18,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:33:18,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:33:18,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:33:18,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:33:18,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:33:18,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:33:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:33:18,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:33:22,072 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:33:22,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:33:22 BoogieIcfgContainer [2018-10-26 21:33:22,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:33:22,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:33:22,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:33:22,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:33:22,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:33:17" (1/3) ... [2018-10-26 21:33:22,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c07c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:33:22, skipping insertion in model container [2018-10-26 21:33:22,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:33:18" (2/3) ... [2018-10-26 21:33:22,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c07c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:33:22, skipping insertion in model container [2018-10-26 21:33:22,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:33:22" (3/3) ... [2018-10-26 21:33:22,082 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09_true-unreach-call_false-termination.c [2018-10-26 21:33:22,090 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:33:22,098 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:33:22,116 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:33:22,153 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:33:22,154 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:33:22,154 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:33:22,154 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:33:22,155 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:33:22,155 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:33:22,155 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:33:22,155 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:33:22,155 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:33:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-10-26 21:33:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 21:33:22,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:22,191 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:22,194 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:22,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-26 21:33:22,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:22,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:22,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:22,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:22,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:33:22,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:22,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:33:22,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:22,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:22,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:22,691 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-10-26 21:33:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:26,479 INFO L93 Difference]: Finished difference Result 870 states and 1578 transitions. [2018-10-26 21:33:26,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:26,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-26 21:33:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:26,518 INFO L225 Difference]: With dead ends: 870 [2018-10-26 21:33:26,519 INFO L226 Difference]: Without dead ends: 617 [2018-10-26 21:33:26,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-26 21:33:26,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-26 21:33:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-26 21:33:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 940 transitions. [2018-10-26 21:33:26,627 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 940 transitions. Word has length 46 [2018-10-26 21:33:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:26,628 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 940 transitions. [2018-10-26 21:33:26,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 940 transitions. [2018-10-26 21:33:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-26 21:33:26,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:26,636 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:26,637 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:26,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1096666001, now seen corresponding path program 1 times [2018-10-26 21:33:26,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:26,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:26,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:26,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:26,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:27,370 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-10-26 21:33:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:33:27,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:27,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:33:27,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:33:27,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:33:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:33:27,531 INFO L87 Difference]: Start difference. First operand 617 states and 940 transitions. Second operand 6 states. [2018-10-26 21:33:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:33,244 INFO L93 Difference]: Finished difference Result 3026 states and 4618 transitions. [2018-10-26 21:33:33,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:33:33,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-26 21:33:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:33,260 INFO L225 Difference]: With dead ends: 3026 [2018-10-26 21:33:33,260 INFO L226 Difference]: Without dead ends: 2411 [2018-10-26 21:33:33,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:33:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2018-10-26 21:33:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1870. [2018-10-26 21:33:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2018-10-26 21:33:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2494 transitions. [2018-10-26 21:33:33,318 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2494 transitions. Word has length 155 [2018-10-26 21:33:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:33,319 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2494 transitions. [2018-10-26 21:33:33,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:33:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2494 transitions. [2018-10-26 21:33:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-26 21:33:33,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:33,327 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:33,328 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:33,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash 256002721, now seen corresponding path program 1 times [2018-10-26 21:33:33,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:33,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:33,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:33,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:33,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-26 21:33:33,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:33,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:33:33,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:33,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:33,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:33,536 INFO L87 Difference]: Start difference. First operand 1870 states and 2494 transitions. Second operand 4 states. [2018-10-26 21:33:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:36,674 INFO L93 Difference]: Finished difference Result 5170 states and 7227 transitions. [2018-10-26 21:33:36,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:36,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-10-26 21:33:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:36,691 INFO L225 Difference]: With dead ends: 5170 [2018-10-26 21:33:36,692 INFO L226 Difference]: Without dead ends: 3302 [2018-10-26 21:33:36,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2018-10-26 21:33:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3302. [2018-10-26 21:33:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2018-10-26 21:33:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4301 transitions. [2018-10-26 21:33:36,758 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4301 transitions. Word has length 222 [2018-10-26 21:33:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:36,758 INFO L481 AbstractCegarLoop]: Abstraction has 3302 states and 4301 transitions. [2018-10-26 21:33:36,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4301 transitions. [2018-10-26 21:33:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-26 21:33:36,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:36,764 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:36,764 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:36,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1243089956, now seen corresponding path program 1 times [2018-10-26 21:33:36,765 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:36,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:36,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:36,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:36,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 148 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 21:33:37,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:33:37,155 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:33:37,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:37,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:33:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 21:33:37,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:33:37,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:33:37,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:33:37,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:33:37,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:33:37,471 INFO L87 Difference]: Start difference. First operand 3302 states and 4301 transitions. Second operand 6 states. [2018-10-26 21:33:39,151 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-26 21:33:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:42,840 INFO L93 Difference]: Finished difference Result 9124 states and 11710 transitions. [2018-10-26 21:33:42,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:33:42,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2018-10-26 21:33:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:42,865 INFO L225 Difference]: With dead ends: 9124 [2018-10-26 21:33:42,866 INFO L226 Difference]: Without dead ends: 5463 [2018-10-26 21:33:42,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:33:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5463 states. [2018-10-26 21:33:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5463 to 3285. [2018-10-26 21:33:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3285 states. [2018-10-26 21:33:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 3842 transitions. [2018-10-26 21:33:42,944 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 3842 transitions. Word has length 236 [2018-10-26 21:33:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:42,944 INFO L481 AbstractCegarLoop]: Abstraction has 3285 states and 3842 transitions. [2018-10-26 21:33:42,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:33:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 3842 transitions. [2018-10-26 21:33:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-26 21:33:42,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:42,951 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:42,951 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:42,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash 2076395288, now seen corresponding path program 1 times [2018-10-26 21:33:42,952 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:42,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:42,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:42,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:42,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:43,540 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-26 21:33:43,884 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 21:33:44,141 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-10-26 21:33:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 286 proven. 46 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-26 21:33:44,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:33:44,440 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:33:44,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:44,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:33:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 309 proven. 23 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-26 21:33:45,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:33:45,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-26 21:33:45,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:33:45,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:33:45,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:33:45,177 INFO L87 Difference]: Start difference. First operand 3285 states and 3842 transitions. Second operand 9 states. [2018-10-26 21:33:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:48,616 INFO L93 Difference]: Finished difference Result 6815 states and 7936 transitions. [2018-10-26 21:33:48,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:33:48,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 353 [2018-10-26 21:33:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:48,631 INFO L225 Difference]: With dead ends: 6815 [2018-10-26 21:33:48,632 INFO L226 Difference]: Without dead ends: 3711 [2018-10-26 21:33:48,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:33:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2018-10-26 21:33:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3464. [2018-10-26 21:33:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3464 states. [2018-10-26 21:33:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 4021 transitions. [2018-10-26 21:33:48,701 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 4021 transitions. Word has length 353 [2018-10-26 21:33:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:48,702 INFO L481 AbstractCegarLoop]: Abstraction has 3464 states and 4021 transitions. [2018-10-26 21:33:48,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:33:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 4021 transitions. [2018-10-26 21:33:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-26 21:33:48,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:48,714 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:48,714 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:48,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:48,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1406253511, now seen corresponding path program 1 times [2018-10-26 21:33:48,715 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:48,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:48,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:48,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:48,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2018-10-26 21:33:49,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:49,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:33:49,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:33:49,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:33:49,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:33:49,301 INFO L87 Difference]: Start difference. First operand 3464 states and 4021 transitions. Second operand 3 states. [2018-10-26 21:33:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:50,801 INFO L93 Difference]: Finished difference Result 7105 states and 8305 transitions. [2018-10-26 21:33:50,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:33:50,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 438 [2018-10-26 21:33:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:50,815 INFO L225 Difference]: With dead ends: 7105 [2018-10-26 21:33:50,815 INFO L226 Difference]: Without dead ends: 3822 [2018-10-26 21:33:50,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:33:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2018-10-26 21:33:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3643. [2018-10-26 21:33:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-10-26 21:33:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4246 transitions. [2018-10-26 21:33:50,879 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4246 transitions. Word has length 438 [2018-10-26 21:33:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:50,880 INFO L481 AbstractCegarLoop]: Abstraction has 3643 states and 4246 transitions. [2018-10-26 21:33:50,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:33:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4246 transitions. [2018-10-26 21:33:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-10-26 21:33:50,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:50,893 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:50,893 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:50,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -807291830, now seen corresponding path program 1 times [2018-10-26 21:33:50,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:50,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:50,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:50,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:50,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-10-26 21:33:51,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:51,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:33:51,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:51,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:51,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:51,297 INFO L87 Difference]: Start difference. First operand 3643 states and 4246 transitions. Second operand 4 states. [2018-10-26 21:33:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:52,634 INFO L93 Difference]: Finished difference Result 10327 states and 12381 transitions. [2018-10-26 21:33:52,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:52,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 459 [2018-10-26 21:33:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:52,660 INFO L225 Difference]: With dead ends: 10327 [2018-10-26 21:33:52,660 INFO L226 Difference]: Without dead ends: 6865 [2018-10-26 21:33:52,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2018-10-26 21:33:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6865. [2018-10-26 21:33:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6865 states. [2018-10-26 21:33:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 7809 transitions. [2018-10-26 21:33:52,766 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 7809 transitions. Word has length 459 [2018-10-26 21:33:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:52,767 INFO L481 AbstractCegarLoop]: Abstraction has 6865 states and 7809 transitions. [2018-10-26 21:33:52,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 7809 transitions. [2018-10-26 21:33:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-10-26 21:33:52,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:52,789 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:52,789 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:52,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash -772093792, now seen corresponding path program 1 times [2018-10-26 21:33:52,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:52,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:52,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:52,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:52,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1205 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-26 21:33:53,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:53,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:33:53,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:33:53,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:33:53,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:33:53,630 INFO L87 Difference]: Start difference. First operand 6865 states and 7809 transitions. Second operand 5 states. [2018-10-26 21:33:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:55,521 INFO L93 Difference]: Finished difference Result 14981 states and 17236 transitions. [2018-10-26 21:33:55,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:33:55,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 651 [2018-10-26 21:33:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:55,553 INFO L225 Difference]: With dead ends: 14981 [2018-10-26 21:33:55,553 INFO L226 Difference]: Without dead ends: 8297 [2018-10-26 21:33:55,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:33:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2018-10-26 21:33:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8297. [2018-10-26 21:33:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8297 states. [2018-10-26 21:33:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 9329 transitions. [2018-10-26 21:33:55,678 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 9329 transitions. Word has length 651 [2018-10-26 21:33:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:55,679 INFO L481 AbstractCegarLoop]: Abstraction has 8297 states and 9329 transitions. [2018-10-26 21:33:55,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:33:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 9329 transitions. [2018-10-26 21:33:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-10-26 21:33:55,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:55,689 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:55,690 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:55,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash 736057852, now seen corresponding path program 1 times [2018-10-26 21:33:55,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:55,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:55,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:55,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:55,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2018-10-26 21:33:56,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:56,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:33:56,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:56,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:56,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:56,609 INFO L87 Difference]: Start difference. First operand 8297 states and 9329 transitions. Second operand 4 states. [2018-10-26 21:33:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:58,610 INFO L93 Difference]: Finished difference Result 18023 states and 20321 transitions. [2018-10-26 21:33:58,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:58,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 713 [2018-10-26 21:33:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:58,629 INFO L225 Difference]: With dead ends: 18023 [2018-10-26 21:33:58,629 INFO L226 Difference]: Without dead ends: 9907 [2018-10-26 21:33:58,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9907 states. [2018-10-26 21:33:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9907 to 9907. [2018-10-26 21:33:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9907 states. [2018-10-26 21:33:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9907 states to 9907 states and 10862 transitions. [2018-10-26 21:33:58,758 INFO L78 Accepts]: Start accepts. Automaton has 9907 states and 10862 transitions. Word has length 713 [2018-10-26 21:33:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:58,759 INFO L481 AbstractCegarLoop]: Abstraction has 9907 states and 10862 transitions. [2018-10-26 21:33:58,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9907 states and 10862 transitions. [2018-10-26 21:33:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2018-10-26 21:33:58,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:58,769 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:58,770 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:58,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:58,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1521446553, now seen corresponding path program 1 times [2018-10-26 21:33:58,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:58,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:58,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:58,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:58,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:59,630 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 21:34:00,131 WARN L179 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2018-10-26 21:34:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 663 proven. 372 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-10-26 21:34:01,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:34:01,453 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:34:01,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:01,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:34:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-10-26 21:34:02,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:34:02,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-10-26 21:34:02,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:34:02,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:34:02,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:34:02,315 INFO L87 Difference]: Start difference. First operand 9907 states and 10862 transitions. Second operand 13 states. [2018-10-26 21:34:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:08,445 INFO L93 Difference]: Finished difference Result 20481 states and 22627 transitions. [2018-10-26 21:34:08,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 21:34:08,446 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 769 [2018-10-26 21:34:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:08,466 INFO L225 Difference]: With dead ends: 20481 [2018-10-26 21:34:08,466 INFO L226 Difference]: Without dead ends: 10390 [2018-10-26 21:34:08,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 768 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2018-10-26 21:34:08,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2018-10-26 21:34:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 10262. [2018-10-26 21:34:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10262 states. [2018-10-26 21:34:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10262 states to 10262 states and 11066 transitions. [2018-10-26 21:34:08,597 INFO L78 Accepts]: Start accepts. Automaton has 10262 states and 11066 transitions. Word has length 769 [2018-10-26 21:34:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:08,598 INFO L481 AbstractCegarLoop]: Abstraction has 10262 states and 11066 transitions. [2018-10-26 21:34:08,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 21:34:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10262 states and 11066 transitions. [2018-10-26 21:34:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-10-26 21:34:08,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:08,608 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:34:08,608 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:08,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1043164057, now seen corresponding path program 1 times [2018-10-26 21:34:08,609 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:08,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:08,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:08,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:08,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 892 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-10-26 21:34:09,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:34:09,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:34:09,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:34:09,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:34:09,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:34:09,611 INFO L87 Difference]: Start difference. First operand 10262 states and 11066 transitions. Second operand 5 states. [2018-10-26 21:34:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:11,260 INFO L93 Difference]: Finished difference Result 22325 states and 24082 transitions. [2018-10-26 21:34:11,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:34:11,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2018-10-26 21:34:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:11,277 INFO L225 Difference]: With dead ends: 22325 [2018-10-26 21:34:11,277 INFO L226 Difference]: Without dead ends: 12065 [2018-10-26 21:34:11,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:34:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12065 states. [2018-10-26 21:34:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12065 to 10982. [2018-10-26 21:34:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10982 states. [2018-10-26 21:34:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 11846 transitions. [2018-10-26 21:34:11,424 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 11846 transitions. Word has length 809 [2018-10-26 21:34:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:11,425 INFO L481 AbstractCegarLoop]: Abstraction has 10982 states and 11846 transitions. [2018-10-26 21:34:11,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:34:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 11846 transitions. [2018-10-26 21:34:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2018-10-26 21:34:11,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:11,435 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:34:11,436 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:11,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1194644164, now seen corresponding path program 1 times [2018-10-26 21:34:11,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:11,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:11,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:11,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:11,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1245 proven. 0 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2018-10-26 21:34:12,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:34:12,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:34:12,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:34:12,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:34:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:34:12,131 INFO L87 Difference]: Start difference. First operand 10982 states and 11846 transitions. Second operand 4 states. [2018-10-26 21:34:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:13,411 INFO L93 Difference]: Finished difference Result 21783 states and 23510 transitions. [2018-10-26 21:34:13,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:34:13,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 854 [2018-10-26 21:34:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:13,422 INFO L225 Difference]: With dead ends: 21783 [2018-10-26 21:34:13,422 INFO L226 Difference]: Without dead ends: 10982 [2018-10-26 21:34:13,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:34:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10982 states. [2018-10-26 21:34:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10982 to 10982. [2018-10-26 21:34:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10982 states. [2018-10-26 21:34:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 11713 transitions. [2018-10-26 21:34:13,552 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 11713 transitions. Word has length 854 [2018-10-26 21:34:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:13,553 INFO L481 AbstractCegarLoop]: Abstraction has 10982 states and 11713 transitions. [2018-10-26 21:34:13,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:34:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 11713 transitions. [2018-10-26 21:34:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-10-26 21:34:13,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:13,566 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:34:13,567 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:13,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash -267445699, now seen corresponding path program 1 times [2018-10-26 21:34:13,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:13,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:13,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:13,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:13,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:14,242 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 21:34:14,450 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-10-26 21:34:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 858 proven. 773 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2018-10-26 21:34:16,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:34:16,479 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 [2018-10-26 21:34:16,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:16,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:34:17,363 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-26 21:34:18,429 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 27 [2018-10-26 21:34:21,467 WARN L179 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 246 DAG size of output: 41 [2018-10-26 21:34:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 634 proven. 733 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-10-26 21:34:23,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:34:23,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 15 [2018-10-26 21:34:23,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 21:34:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 21:34:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-26 21:34:23,989 INFO L87 Difference]: Start difference. First operand 10982 states and 11713 transitions. Second operand 16 states. [2018-10-26 21:34:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:41,025 INFO L93 Difference]: Finished difference Result 23251 states and 24787 transitions. [2018-10-26 21:34:41,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 21:34:41,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 928 [2018-10-26 21:34:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:41,040 INFO L225 Difference]: With dead ends: 23251 [2018-10-26 21:34:41,040 INFO L226 Difference]: Without dead ends: 12092 [2018-10-26 21:34:41,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 924 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-10-26 21:34:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12092 states. [2018-10-26 21:34:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12092 to 11161. [2018-10-26 21:34:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11161 states. [2018-10-26 21:34:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11161 states to 11161 states and 11898 transitions. [2018-10-26 21:34:41,196 INFO L78 Accepts]: Start accepts. Automaton has 11161 states and 11898 transitions. Word has length 928 [2018-10-26 21:34:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:41,197 INFO L481 AbstractCegarLoop]: Abstraction has 11161 states and 11898 transitions. [2018-10-26 21:34:41,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 21:34:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 11161 states and 11898 transitions. [2018-10-26 21:34:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-10-26 21:34:41,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:41,215 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:34:41,216 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:41,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 950184563, now seen corresponding path program 1 times [2018-10-26 21:34:41,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:41,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:41,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:41,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:41,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:42,431 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 21:34:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 199 proven. 1861 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2018-10-26 21:34:44,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:34:44,805 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 [2018-10-26 21:34:44,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:45,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:34:53,159 WARN L179 SmtUtils]: Spent 7.64 s on a formula simplification. DAG size of input: 188 DAG size of output: 50 [2018-10-26 21:34:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 489 proven. 351 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2018-10-26 21:34:55,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:34:55,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 15 [2018-10-26 21:34:55,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 21:34:55,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 21:34:55,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-10-26 21:34:55,013 INFO L87 Difference]: Start difference. First operand 11161 states and 11898 transitions. Second operand 16 states. [2018-10-26 21:35:11,494 WARN L179 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2018-10-26 21:35:21,973 WARN L179 SmtUtils]: Spent 10.42 s on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2018-10-26 21:35:39,400 WARN L179 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2018-10-26 21:35:51,824 WARN L179 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-10-26 21:36:19,026 WARN L179 SmtUtils]: Spent 12.06 s on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-26 21:36:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:40,374 INFO L93 Difference]: Finished difference Result 25184 states and 27041 transitions. [2018-10-26 21:36:40,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-26 21:36:40,375 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1058 [2018-10-26 21:36:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:40,390 INFO L225 Difference]: With dead ends: 25184 [2018-10-26 21:36:40,390 INFO L226 Difference]: Without dead ends: 13838 [2018-10-26 21:36:40,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1056 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=635, Invalid=2017, Unknown=0, NotChecked=0, Total=2652 [2018-10-26 21:36:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2018-10-26 21:36:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 12059. [2018-10-26 21:36:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12059 states. [2018-10-26 21:36:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 12769 transitions. [2018-10-26 21:36:40,532 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 12769 transitions. Word has length 1058 [2018-10-26 21:36:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:40,533 INFO L481 AbstractCegarLoop]: Abstraction has 12059 states and 12769 transitions. [2018-10-26 21:36:40,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 21:36:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 12769 transitions. [2018-10-26 21:36:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2119 [2018-10-26 21:36:40,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:40,571 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:40,571 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:40,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:40,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1547180355, now seen corresponding path program 1 times [2018-10-26 21:36:40,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:36:40,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:36:40,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:40,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:40,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14444 backedges. 3095 proven. 0 refuted. 0 times theorem prover too weak. 11349 trivial. 0 not checked. [2018-10-26 21:36:43,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:36:43,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 21:36:43,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:36:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:36:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:36:43,826 INFO L87 Difference]: Start difference. First operand 12059 states and 12769 transitions. Second operand 7 states. [2018-10-26 21:36:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:46,441 INFO L93 Difference]: Finished difference Result 24960 states and 26477 transitions. [2018-10-26 21:36:46,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:36:46,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2118 [2018-10-26 21:36:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:46,453 INFO L225 Difference]: With dead ends: 24960 [2018-10-26 21:36:46,453 INFO L226 Difference]: Without dead ends: 12054 [2018-10-26 21:36:46,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:36:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12054 states. [2018-10-26 21:36:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12054 to 12054. [2018-10-26 21:36:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12054 states. [2018-10-26 21:36:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 12717 transitions. [2018-10-26 21:36:46,595 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 12717 transitions. Word has length 2118 [2018-10-26 21:36:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:46,596 INFO L481 AbstractCegarLoop]: Abstraction has 12054 states and 12717 transitions. [2018-10-26 21:36:46,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:36:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 12717 transitions. [2018-10-26 21:36:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2153 [2018-10-26 21:36:46,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:46,634 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:46,634 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:46,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:46,635 INFO L82 PathProgramCache]: Analyzing trace with hash 372411892, now seen corresponding path program 1 times [2018-10-26 21:36:46,635 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:36:46,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:36:46,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:46,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:46,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14891 backedges. 3466 proven. 39 refuted. 0 times theorem prover too weak. 11386 trivial. 0 not checked. [2018-10-26 21:36:49,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:49,549 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 [2018-10-26 21:36:49,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:50,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14891 backedges. 3466 proven. 0 refuted. 0 times theorem prover too weak. 11425 trivial. 0 not checked. [2018-10-26 21:36:52,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:36:52,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:36:52,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:36:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:36:52,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:36:52,203 INFO L87 Difference]: Start difference. First operand 12054 states and 12717 transitions. Second operand 5 states. [2018-10-26 21:36:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:53,627 INFO L93 Difference]: Finished difference Result 23387 states and 24627 transitions. [2018-10-26 21:36:53,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:36:53,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 2152 [2018-10-26 21:36:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:53,633 INFO L225 Difference]: With dead ends: 23387 [2018-10-26 21:36:53,633 INFO L226 Difference]: Without dead ends: 5018 [2018-10-26 21:36:53,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2156 GetRequests, 2153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:36:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2018-10-26 21:36:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 4660. [2018-10-26 21:36:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4660 states. [2018-10-26 21:36:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4660 states to 4660 states and 4734 transitions. [2018-10-26 21:36:53,693 INFO L78 Accepts]: Start accepts. Automaton has 4660 states and 4734 transitions. Word has length 2152 [2018-10-26 21:36:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:53,694 INFO L481 AbstractCegarLoop]: Abstraction has 4660 states and 4734 transitions. [2018-10-26 21:36:53,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:36:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states and 4734 transitions. [2018-10-26 21:36:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2213 [2018-10-26 21:36:53,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:53,724 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:53,725 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:53,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash 734032280, now seen corresponding path program 1 times [2018-10-26 21:36:53,725 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:36:53,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:36:53,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:53,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:53,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15131 backedges. 3743 proven. 39 refuted. 0 times theorem prover too weak. 11349 trivial. 0 not checked. [2018-10-26 21:36:57,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:57,817 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 [2018-10-26 21:36:57,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:58,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:37:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15131 backedges. 3782 proven. 0 refuted. 0 times theorem prover too weak. 11349 trivial. 0 not checked. [2018-10-26 21:37:00,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:37:00,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2018-10-26 21:37:00,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 21:37:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 21:37:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:37:00,723 INFO L87 Difference]: Start difference. First operand 4660 states and 4734 transitions. Second operand 10 states. [2018-10-26 21:37:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:37:04,096 INFO L93 Difference]: Finished difference Result 9324 states and 9475 transitions. [2018-10-26 21:37:04,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 21:37:04,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2212 [2018-10-26 21:37:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:37:04,098 INFO L225 Difference]: With dead ends: 9324 [2018-10-26 21:37:04,098 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:37:04,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2227 GetRequests, 2215 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-26 21:37:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:37:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:37:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:37:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:37:04,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2212 [2018-10-26 21:37:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:37:04,104 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:37:04,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 21:37:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:37:04,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:37:04,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:37:04,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,490 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,573 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,585 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,610 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,806 WARN L179 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 606 DAG size of output: 294 [2018-10-26 21:37:04,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:04,947 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,056 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,173 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,259 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:37:05,430 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 606 DAG size of output: 294 [2018-10-26 21:37:16,017 WARN L179 SmtUtils]: Spent 10.58 s on a formula simplification. DAG size of input: 249 DAG size of output: 103 Received shutdown request... [2018-10-26 21:37:23,214 WARN L187 SmtUtils]: Removed 21 from assertion stack [2018-10-26 21:37:23,215 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-26 21:37:23,216 INFO L168 Benchmark]: Toolchain (without parser) took 245756.62 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,217 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:37:23,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.76 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 234.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,220 INFO L168 Benchmark]: Boogie Preprocessor took 128.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,221 INFO L168 Benchmark]: RCFGBuilder took 3471.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,221 INFO L168 Benchmark]: TraceAbstraction took 241140.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -645.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 21:37:23,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 776.76 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 234.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3471.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241140.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -645.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 249. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown