java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:29:16,506 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:29:16,508 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:29:16,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:29:16,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:29:16,521 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:29:16,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:29:16,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:29:16,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:29:16,527 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:29:16,528 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:29:16,528 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:29:16,529 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:29:16,530 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:29:16,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:29:16,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:29:16,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:29:16,535 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:29:16,537 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:29:16,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:29:16,540 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:29:16,541 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:29:16,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:29:16,553 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 22:29:16,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:29:16,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:29:16,579 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:29:16,579 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:29:16,580 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:29:16,580 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:29:16,580 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:29:16,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:29:16,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:29:16,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:29:16,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:29:16,581 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:29:16,581 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:29:16,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:29:16,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:29:16,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:29:16,582 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:29:16,582 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:29:16,583 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:29:16,583 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:29:16,583 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:29:16,583 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:29:16,583 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:29:16,583 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:29:16,584 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:29:16,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:29:16,584 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:29:16,584 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:29:16,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:29:16,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:29:16,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:29:16,663 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:29:16,663 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:29:16,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-26 22:29:16,733 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a8917ad4/92c80d098f86446a8fb5785a4f313ee8/FLAGa50a6c731 [2018-10-26 22:29:17,228 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:29:17,229 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-26 22:29:17,236 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a8917ad4/92c80d098f86446a8fb5785a4f313ee8/FLAGa50a6c731 [2018-10-26 22:29:17,251 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a8917ad4/92c80d098f86446a8fb5785a4f313ee8 [2018-10-26 22:29:17,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:29:17,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:29:17,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:17,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:29:17,267 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:29:17,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601f4e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17, skipping insertion in model container [2018-10-26 22:29:17,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:29:17,306 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:29:17,497 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:17,508 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:29:17,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:17,555 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:29:17,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17 WrapperNode [2018-10-26 22:29:17,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:17,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:17,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:29:17,557 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:29:17,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:17,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:29:17,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:29:17,597 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:29:17,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (1/1) ... [2018-10-26 22:29:17,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:29:17,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:29:17,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:29:17,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:29:17,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (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 22:29:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:29:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:29:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:29:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:29:18,246 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:29:18,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:18 BoogieIcfgContainer [2018-10-26 22:29:18,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:29:18,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:29:18,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:29:18,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:29:18,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:29:17" (1/3) ... [2018-10-26 22:29:18,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636f446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:18, skipping insertion in model container [2018-10-26 22:29:18,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:17" (2/3) ... [2018-10-26 22:29:18,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636f446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:18, skipping insertion in model container [2018-10-26 22:29:18,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:18" (3/3) ... [2018-10-26 22:29:18,255 INFO L112 eAbstractionObserver]: Analyzing ICFG heapsort_true-unreach-call_true-termination.i [2018-10-26 22:29:18,264 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:29:18,272 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:29:18,288 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:29:18,322 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:29:18,322 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:29:18,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:29:18,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:29:18,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:29:18,323 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:29:18,323 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:29:18,323 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:29:18,323 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:29:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-10-26 22:29:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 22:29:18,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:18,349 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:18,351 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:18,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:18,357 INFO L82 PathProgramCache]: Analyzing trace with hash 201403027, now seen corresponding path program 1 times [2018-10-26 22:29:18,359 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:18,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:18,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:18,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:18,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:18,490 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 22:29:18,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:18,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:29:18,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:29:18,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:29:18,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:29:18,515 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-10-26 22:29:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:18,546 INFO L93 Difference]: Finished difference Result 78 states and 136 transitions. [2018-10-26 22:29:18,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:29:18,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-26 22:29:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:18,560 INFO L225 Difference]: With dead ends: 78 [2018-10-26 22:29:18,560 INFO L226 Difference]: Without dead ends: 37 [2018-10-26 22:29:18,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:29:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-26 22:29:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-26 22:29:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-26 22:29:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2018-10-26 22:29:18,617 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 56 transitions. Word has length 12 [2018-10-26 22:29:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:18,618 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 56 transitions. [2018-10-26 22:29:18,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:29:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 56 transitions. [2018-10-26 22:29:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:29:18,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:18,619 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:18,622 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:18,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1490239341, now seen corresponding path program 1 times [2018-10-26 22:29:18,622 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:18,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:18,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:18,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:18,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:18,946 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 22:29:18,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:18,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:29:18,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:29:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:29:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:29:18,949 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand 6 states. [2018-10-26 22:29:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:19,803 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2018-10-26 22:29:19,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:29:19,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-26 22:29:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:19,806 INFO L225 Difference]: With dead ends: 74 [2018-10-26 22:29:19,806 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 22:29:19,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:29:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 22:29:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2018-10-26 22:29:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-26 22:29:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 91 transitions. [2018-10-26 22:29:19,837 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 91 transitions. Word has length 13 [2018-10-26 22:29:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:19,838 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 91 transitions. [2018-10-26 22:29:19,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:29:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 91 transitions. [2018-10-26 22:29:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:29:19,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:19,841 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:19,842 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:19,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1477995240, now seen corresponding path program 1 times [2018-10-26 22:29:19,842 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:19,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:19,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:19,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:19,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:19,954 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 22:29:19,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:19,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:29:19,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:29:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:29:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:29:19,955 INFO L87 Difference]: Start difference. First operand 59 states and 91 transitions. Second operand 6 states. [2018-10-26 22:29:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:20,538 INFO L93 Difference]: Finished difference Result 118 states and 181 transitions. [2018-10-26 22:29:20,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:29:20,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-26 22:29:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:20,544 INFO L225 Difference]: With dead ends: 118 [2018-10-26 22:29:20,546 INFO L226 Difference]: Without dead ends: 116 [2018-10-26 22:29:20,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:29:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-26 22:29:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-10-26 22:29:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-26 22:29:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 170 transitions. [2018-10-26 22:29:20,586 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 170 transitions. Word has length 13 [2018-10-26 22:29:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:20,587 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 170 transitions. [2018-10-26 22:29:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:29:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 170 transitions. [2018-10-26 22:29:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 22:29:20,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:20,588 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:20,589 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:20,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2057511575, now seen corresponding path program 1 times [2018-10-26 22:29:20,592 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:20,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:20,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:20,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:20,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:20,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:20,734 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 22:29:20,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:20,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:21,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:21,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-10-26 22:29:21,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 22:29:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 22:29:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:29:21,164 INFO L87 Difference]: Start difference. First operand 109 states and 170 transitions. Second operand 12 states. [2018-10-26 22:29:21,444 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 22:29:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:23,268 INFO L93 Difference]: Finished difference Result 242 states and 384 transitions. [2018-10-26 22:29:23,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:29:23,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-10-26 22:29:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:23,274 INFO L225 Difference]: With dead ends: 242 [2018-10-26 22:29:23,275 INFO L226 Difference]: Without dead ends: 240 [2018-10-26 22:29:23,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-10-26 22:29:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-26 22:29:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 199. [2018-10-26 22:29:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-26 22:29:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 320 transitions. [2018-10-26 22:29:23,354 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 320 transitions. Word has length 18 [2018-10-26 22:29:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:23,354 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 320 transitions. [2018-10-26 22:29:23,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:29:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 320 transitions. [2018-10-26 22:29:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 22:29:23,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:23,358 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:23,358 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:23,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1598314546, now seen corresponding path program 1 times [2018-10-26 22:29:23,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:23,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:23,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:23,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 22:29:23,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:23,472 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 22:29:23,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:23,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:29:23,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:23,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-26 22:29:23,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:29:23,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:29:23,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:29:23,589 INFO L87 Difference]: Start difference. First operand 199 states and 320 transitions. Second operand 9 states. [2018-10-26 22:29:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:24,302 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2018-10-26 22:29:24,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:29:24,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-10-26 22:29:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:24,309 INFO L225 Difference]: With dead ends: 257 [2018-10-26 22:29:24,309 INFO L226 Difference]: Without dead ends: 255 [2018-10-26 22:29:24,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:29:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-26 22:29:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2018-10-26 22:29:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-26 22:29:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 371 transitions. [2018-10-26 22:29:24,370 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 371 transitions. Word has length 25 [2018-10-26 22:29:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:24,371 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 371 transitions. [2018-10-26 22:29:24,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:29:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 371 transitions. [2018-10-26 22:29:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 22:29:24,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:24,373 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:24,373 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:24,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:24,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1015418930, now seen corresponding path program 1 times [2018-10-26 22:29:24,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:24,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:24,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:24,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:24,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 22:29:24,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:24,509 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 22:29:24,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:24,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 22:29:24,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:24,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-26 22:29:24,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:29:24,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:29:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:29:24,654 INFO L87 Difference]: Start difference. First operand 232 states and 371 transitions. Second operand 9 states. [2018-10-26 22:29:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:25,500 INFO L93 Difference]: Finished difference Result 314 states and 500 transitions. [2018-10-26 22:29:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:29:25,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-26 22:29:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:25,511 INFO L225 Difference]: With dead ends: 314 [2018-10-26 22:29:25,511 INFO L226 Difference]: Without dead ends: 312 [2018-10-26 22:29:25,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:29:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-26 22:29:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 285. [2018-10-26 22:29:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-26 22:29:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2018-10-26 22:29:25,561 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 28 [2018-10-26 22:29:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:25,561 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2018-10-26 22:29:25,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:29:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2018-10-26 22:29:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 22:29:25,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:25,564 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:25,571 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:25,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:25,571 INFO L82 PathProgramCache]: Analyzing trace with hash 574596932, now seen corresponding path program 1 times [2018-10-26 22:29:25,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:25,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:25,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:25,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:25,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 22:29:25,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:25,702 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 22:29:25,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:25,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:25,991 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-26 22:29:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 22:29:26,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:26,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 15 [2018-10-26 22:29:26,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 22:29:26,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 22:29:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-10-26 22:29:26,175 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand 15 states. [2018-10-26 22:29:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:27,953 INFO L93 Difference]: Finished difference Result 375 states and 592 transitions. [2018-10-26 22:29:27,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:29:27,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-10-26 22:29:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:27,957 INFO L225 Difference]: With dead ends: 375 [2018-10-26 22:29:27,958 INFO L226 Difference]: Without dead ends: 373 [2018-10-26 22:29:27,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-10-26 22:29:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-26 22:29:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 330. [2018-10-26 22:29:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-26 22:29:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 525 transitions. [2018-10-26 22:29:28,032 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 525 transitions. Word has length 30 [2018-10-26 22:29:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:28,032 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 525 transitions. [2018-10-26 22:29:28,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 22:29:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 525 transitions. [2018-10-26 22:29:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 22:29:28,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:28,034 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:28,034 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:28,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:28,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1875761279, now seen corresponding path program 1 times [2018-10-26 22:29:28,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:28,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:28,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:28,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:28,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 22:29:28,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:28,166 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 22:29:28,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:28,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:29:28,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:28,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-26 22:29:28,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:29:28,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:29:28,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:29:28,282 INFO L87 Difference]: Start difference. First operand 330 states and 525 transitions. Second operand 10 states. [2018-10-26 22:29:28,713 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-10-26 22:29:29,077 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-10-26 22:29:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:29,434 INFO L93 Difference]: Finished difference Result 344 states and 537 transitions. [2018-10-26 22:29:29,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:29:29,436 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-10-26 22:29:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:29,439 INFO L225 Difference]: With dead ends: 344 [2018-10-26 22:29:29,440 INFO L226 Difference]: Without dead ends: 342 [2018-10-26 22:29:29,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:29:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-26 22:29:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2018-10-26 22:29:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-26 22:29:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 531 transitions. [2018-10-26 22:29:29,479 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 531 transitions. Word has length 29 [2018-10-26 22:29:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:29,480 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 531 transitions. [2018-10-26 22:29:29,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:29:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 531 transitions. [2018-10-26 22:29:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 22:29:29,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:29,481 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:29,482 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:29,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1797142330, now seen corresponding path program 1 times [2018-10-26 22:29:29,482 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:29,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:29,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:29,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:29,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 22:29:29,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:29,619 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 22:29:29,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:29,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 22:29:29,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:29,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-26 22:29:29,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 22:29:29,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 22:29:29,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:29:29,834 INFO L87 Difference]: Start difference. First operand 338 states and 531 transitions. Second operand 14 states. [2018-10-26 22:29:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:32,023 INFO L93 Difference]: Finished difference Result 589 states and 953 transitions. [2018-10-26 22:29:32,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:29:32,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-10-26 22:29:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:32,030 INFO L225 Difference]: With dead ends: 589 [2018-10-26 22:29:32,030 INFO L226 Difference]: Without dead ends: 587 [2018-10-26 22:29:32,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2018-10-26 22:29:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-10-26 22:29:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 522. [2018-10-26 22:29:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-26 22:29:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 854 transitions. [2018-10-26 22:29:32,120 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 854 transitions. Word has length 30 [2018-10-26 22:29:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 854 transitions. [2018-10-26 22:29:32,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 22:29:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 854 transitions. [2018-10-26 22:29:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-26 22:29:32,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:32,123 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 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 22:29:32,123 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:32,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1506527125, now seen corresponding path program 1 times [2018-10-26 22:29:32,123 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:32,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:32,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:32,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:32,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-26 22:29:32,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:32,421 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 22:29:32,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:32,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-26 22:29:32,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:32,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-26 22:29:32,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:29:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:29:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:29:32,516 INFO L87 Difference]: Start difference. First operand 522 states and 854 transitions. Second operand 10 states. [2018-10-26 22:29:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:33,152 INFO L93 Difference]: Finished difference Result 598 states and 963 transitions. [2018-10-26 22:29:33,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:29:33,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-10-26 22:29:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:33,158 INFO L225 Difference]: With dead ends: 598 [2018-10-26 22:29:33,158 INFO L226 Difference]: Without dead ends: 596 [2018-10-26 22:29:33,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:29:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2018-10-26 22:29:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 526. [2018-10-26 22:29:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-26 22:29:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 857 transitions. [2018-10-26 22:29:33,239 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 857 transitions. Word has length 40 [2018-10-26 22:29:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:33,239 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 857 transitions. [2018-10-26 22:29:33,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:29:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 857 transitions. [2018-10-26 22:29:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-26 22:29:33,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:33,241 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 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 22:29:33,241 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:33,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:33,242 INFO L82 PathProgramCache]: Analyzing trace with hash 143072073, now seen corresponding path program 1 times [2018-10-26 22:29:33,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:33,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:33,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:33,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:33,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 22:29:33,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:33,867 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:33,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:33,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 22:29:34,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:34,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-26 22:29:34,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:29:34,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:29:34,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:29:34,394 INFO L87 Difference]: Start difference. First operand 526 states and 857 transitions. Second operand 10 states. [2018-10-26 22:29:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:34,780 INFO L93 Difference]: Finished difference Result 562 states and 909 transitions. [2018-10-26 22:29:34,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:29:34,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-10-26 22:29:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:34,785 INFO L225 Difference]: With dead ends: 562 [2018-10-26 22:29:34,785 INFO L226 Difference]: Without dead ends: 560 [2018-10-26 22:29:34,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:29:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-26 22:29:34,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 530. [2018-10-26 22:29:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-26 22:29:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 860 transitions. [2018-10-26 22:29:34,865 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 860 transitions. Word has length 41 [2018-10-26 22:29:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:34,866 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 860 transitions. [2018-10-26 22:29:34,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:29:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 860 transitions. [2018-10-26 22:29:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-26 22:29:34,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:34,868 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2018-10-26 22:29:34,869 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:34,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1466383919, now seen corresponding path program 1 times [2018-10-26 22:29:34,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:34,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:34,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:34,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:34,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-26 22:29:35,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:35,354 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 22:29:35,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:35,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-26 22:29:35,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:29:35,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-26 22:29:35,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 22:29:35,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 22:29:35,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-26 22:29:35,608 INFO L87 Difference]: Start difference. First operand 530 states and 860 transitions. Second operand 11 states. [2018-10-26 22:29:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:37,056 INFO L93 Difference]: Finished difference Result 1093 states and 1743 transitions. [2018-10-26 22:29:37,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-26 22:29:37,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2018-10-26 22:29:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:37,059 INFO L225 Difference]: With dead ends: 1093 [2018-10-26 22:29:37,060 INFO L226 Difference]: Without dead ends: 284 [2018-10-26 22:29:37,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2018-10-26 22:29:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-26 22:29:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 237. [2018-10-26 22:29:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-26 22:29:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 345 transitions. [2018-10-26 22:29:37,123 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 345 transitions. Word has length 61 [2018-10-26 22:29:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:37,124 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 345 transitions. [2018-10-26 22:29:37,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:29:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 345 transitions. [2018-10-26 22:29:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-26 22:29:37,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:37,126 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 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] [2018-10-26 22:29:37,126 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:37,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1332369968, now seen corresponding path program 1 times [2018-10-26 22:29:37,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:29:37,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:29:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:37,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-10-26 22:29:37,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:37,395 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:37,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:37,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-26 22:29:38,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:38,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2018-10-26 22:29:38,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 22:29:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 22:29:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2018-10-26 22:29:38,936 INFO L87 Difference]: Start difference. First operand 237 states and 345 transitions. Second operand 11 states. [2018-10-26 22:29:39,783 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-26 22:29:41,724 WARN L179 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-26 22:29:42,076 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-26 22:29:44,900 WARN L179 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 22:29:57,512 WARN L179 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-26 22:30:00,488 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-26 22:30:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:15,123 INFO L93 Difference]: Finished difference Result 483 states and 697 transitions. [2018-10-26 22:30:15,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 22:30:15,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2018-10-26 22:30:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:15,128 INFO L225 Difference]: With dead ends: 483 [2018-10-26 22:30:15,129 INFO L226 Difference]: Without dead ends: 298 [2018-10-26 22:30:15,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=212, Invalid=640, Unknown=18, NotChecked=0, Total=870 [2018-10-26 22:30:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-26 22:30:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 200. [2018-10-26 22:30:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-26 22:30:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 284 transitions. [2018-10-26 22:30:15,163 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 284 transitions. Word has length 82 [2018-10-26 22:30:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:15,163 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 284 transitions. [2018-10-26 22:30:15,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:30:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 284 transitions. [2018-10-26 22:30:15,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-26 22:30:15,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:15,165 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:30:15,166 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:15,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:15,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1408874823, now seen corresponding path program 1 times [2018-10-26 22:30:15,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:15,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:15,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:15,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:15,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 48 proven. 11 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-26 22:30:15,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:15,303 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:15,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:15,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:30:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 212 proven. 9 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-10-26 22:30:15,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:30:15,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-10-26 22:30:15,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 22:30:15,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 22:30:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:30:15,605 INFO L87 Difference]: Start difference. First operand 200 states and 284 transitions. Second operand 14 states. [2018-10-26 22:30:16,814 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-26 22:30:19,434 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-26 22:30:20,784 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-26 22:30:23,408 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-26 22:30:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:25,643 INFO L93 Difference]: Finished difference Result 502 states and 732 transitions. [2018-10-26 22:30:25,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 22:30:25,643 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2018-10-26 22:30:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:25,646 INFO L225 Difference]: With dead ends: 502 [2018-10-26 22:30:25,646 INFO L226 Difference]: Without dead ends: 354 [2018-10-26 22:30:25,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=202, Invalid=605, Unknown=5, NotChecked=0, Total=812 [2018-10-26 22:30:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-26 22:30:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 250. [2018-10-26 22:30:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-26 22:30:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2018-10-26 22:30:25,699 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 117 [2018-10-26 22:30:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:25,699 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2018-10-26 22:30:25,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 22:30:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2018-10-26 22:30:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-26 22:30:25,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:25,702 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:30:25,702 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:25,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1842603909, now seen corresponding path program 1 times [2018-10-26 22:30:25,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:25,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:25,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:25,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:25,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-26 22:30:26,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:26,165 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:26,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:26,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:30:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-26 22:30:26,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:30:26,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2018-10-26 22:30:26,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 22:30:26,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 22:30:26,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:30:26,478 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 16 states. [2018-10-26 22:30:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:28,866 INFO L93 Difference]: Finished difference Result 426 states and 627 transitions. [2018-10-26 22:30:28,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 22:30:28,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2018-10-26 22:30:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:28,873 INFO L225 Difference]: With dead ends: 426 [2018-10-26 22:30:28,873 INFO L226 Difference]: Without dead ends: 424 [2018-10-26 22:30:28,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-10-26 22:30:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-10-26 22:30:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 337. [2018-10-26 22:30:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-26 22:30:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2018-10-26 22:30:28,971 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 117 [2018-10-26 22:30:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:28,971 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2018-10-26 22:30:28,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 22:30:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2018-10-26 22:30:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-26 22:30:28,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:28,975 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 22:30:28,975 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:28,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:28,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1027473157, now seen corresponding path program 2 times [2018-10-26 22:30:28,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:28,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:28,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:28,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:28,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 41 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-10-26 22:30:29,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:29,309 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:29,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:30:29,369 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:30:29,370 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:30:29,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:30:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 61 proven. 12 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2018-10-26 22:30:29,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:30:29,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-10-26 22:30:29,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 22:30:29,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 22:30:29,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-10-26 22:30:29,754 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 20 states. [2018-10-26 22:30:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:36,817 INFO L93 Difference]: Finished difference Result 589 states and 875 transitions. [2018-10-26 22:30:36,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-26 22:30:36,818 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2018-10-26 22:30:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:36,819 INFO L225 Difference]: With dead ends: 589 [2018-10-26 22:30:36,819 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:30:36,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2018-10-26 22:30:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:30:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:30:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:30:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:30:36,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2018-10-26 22:30:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:36,823 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:30:36,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-26 22:30:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:30:36,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:30:36,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:30:36,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:36,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:36,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:36,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,012 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-26 22:30:37,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,181 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-26 22:30:37,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,317 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2018-10-26 22:30:37,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,612 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2018-10-26 22:30:37,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,792 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 123 [2018-10-26 22:30:37,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:37,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,118 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 182 [2018-10-26 22:30:38,286 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 164 [2018-10-26 22:30:38,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,438 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-26 22:30:38,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:38,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,214 WARN L179 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 209 [2018-10-26 22:30:39,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,270 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:30:39,743 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 213 [2018-10-26 22:30:46,526 WARN L179 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-26 22:31:26,778 WARN L179 SmtUtils]: Spent 40.25 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-26 22:31:29,472 WARN L179 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2018-10-26 22:32:07,218 WARN L179 SmtUtils]: Spent 37.74 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-26 22:32:07,550 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2018-10-26 22:32:16,366 WARN L179 SmtUtils]: Spent 8.81 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-26 22:32:25,134 WARN L179 SmtUtils]: Spent 8.77 s on a formula simplification. DAG size of input: 167 DAG size of output: 94 [2018-10-26 22:32:25,639 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 17 [2018-10-26 22:32:31,897 WARN L179 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 178 DAG size of output: 94 [2018-10-26 22:33:34,503 WARN L179 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 164 DAG size of output: 104 Received shutdown request... [2018-10-26 22:33:45,964 WARN L187 SmtUtils]: Removed 30 from assertion stack [2018-10-26 22:33:45,964 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 22:33:45,965 INFO L168 Benchmark]: Toolchain (without parser) took 268704.76 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -192.9 MB). Peak memory consumption was 919.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:45,967 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 22:33:45,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:45,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:33:45,968 INFO L168 Benchmark]: Boogie Preprocessor took 26.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:33:45,968 INFO L168 Benchmark]: RCFGBuilder took 623.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:45,969 INFO L168 Benchmark]: TraceAbstraction took 267716.91 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 315.6 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 605.3 MB). Peak memory consumption was 962.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:45,973 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 293.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 623.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267716.91 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 315.6 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 605.3 MB). Peak memory consumption was 962.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 132. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown