java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:57:16,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:57:16,540 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:57:16,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:57:16,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:57:16,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:57:16,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:57:16,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:57:16,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:57:16,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:57:16,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:57:16,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:57:16,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:57:16,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:57:16,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:57:16,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:57:16,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:57:16,567 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:57:16,569 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:57:16,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:57:16,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:57:16,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:57:16,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:57:16,584 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:57:16,593 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:57:16,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:57:16,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:57:16,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:57:16,595 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:57:16,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:57:16,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:57:16,596 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:57:16,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:57:16,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:57:16,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:57:16,601 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:57:16,601 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:57:16,602 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:57:16,602 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:57:16,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:57:16,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:57:16,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:57:16,663 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:57:16,663 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:57:16,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 20:57:16,664 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-12 20:57:16,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:57:16,738 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:57:16,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:57:16,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:57:16,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:57:16,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... [2018-10-12 20:57:16,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:57:16,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:57:16,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:57:16,814 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:57:16,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 20:57:16,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:57:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:57:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:57:17,414 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:57:17,414 INFO L202 PluginConnector]: Adding new model cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:17 BoogieIcfgContainer [2018-10-12 20:57:17,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:57:17,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:57:17,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:57:17,420 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:57:17,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:57:16" (1/2) ... [2018-10-12 20:57:17,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c392566 and model type cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:57:17, skipping insertion in model container [2018-10-12 20:57:17,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:57:17" (2/2) ... [2018-10-12 20:57:17,423 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcat-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 20:57:17,433 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:57:17,443 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:57:17,460 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:57:17,489 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:57:17,490 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:57:17,490 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:57:17,490 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:57:17,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:57:17,491 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:57:17,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:57:17,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:57:17,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:57:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-12 20:57:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-12 20:57:17,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:17,540 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:17,542 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:17,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -780520305, now seen corresponding path program 1 times [2018-10-12 20:57:17,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:18,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:57:18,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-12 20:57:18,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 20:57:18,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 20:57:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:57:18,609 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 12 states. [2018-10-12 20:57:19,165 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-12 20:57:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:19,784 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-12 20:57:19,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 20:57:19,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-10-12 20:57:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:19,799 INFO L225 Difference]: With dead ends: 91 [2018-10-12 20:57:19,800 INFO L226 Difference]: Without dead ends: 91 [2018-10-12 20:57:19,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-10-12 20:57:19,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-12 20:57:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-12 20:57:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-12 20:57:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-12 20:57:19,849 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-12 20:57:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:19,850 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-12 20:57:19,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 20:57:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-12 20:57:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 20:57:19,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:19,857 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:19,857 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:19,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash -361483911, now seen corresponding path program 1 times [2018-10-12 20:57:19,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:20,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:20,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-12 20:57:20,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-12 20:57:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-12 20:57:20,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:57:20,385 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 14 states. [2018-10-12 20:57:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:21,656 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-12 20:57:21,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-12 20:57:21,657 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-10-12 20:57:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:21,660 INFO L225 Difference]: With dead ends: 104 [2018-10-12 20:57:21,660 INFO L226 Difference]: Without dead ends: 104 [2018-10-12 20:57:21,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2018-10-12 20:57:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-12 20:57:21,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-12 20:57:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-12 20:57:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-12 20:57:21,672 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-12 20:57:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:21,673 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-12 20:57:21,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-12 20:57:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-12 20:57:21,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-12 20:57:21,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:21,675 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:21,675 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:21,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:21,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1253179185, now seen corresponding path program 2 times [2018-10-12 20:57:21,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:22,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:22,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-12 20:57:22,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-12 20:57:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-12 20:57:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2018-10-12 20:57:22,575 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 24 states. [2018-10-12 20:57:23,997 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-12 20:57:24,159 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-10-12 20:57:24,528 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 20:57:25,596 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-10-12 20:57:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:26,581 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-12 20:57:26,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-12 20:57:26,586 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2018-10-12 20:57:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:26,588 INFO L225 Difference]: With dead ends: 117 [2018-10-12 20:57:26,588 INFO L226 Difference]: Without dead ends: 117 [2018-10-12 20:57:26,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=582, Invalid=1674, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 20:57:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-12 20:57:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-12 20:57:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-12 20:57:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-12 20:57:26,607 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-12 20:57:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:26,608 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-12 20:57:26,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-12 20:57:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-12 20:57:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-12 20:57:26,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:26,611 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:26,611 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:26,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:26,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1235111225, now seen corresponding path program 3 times [2018-10-12 20:57:26,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:27,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:27,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-12 20:57:27,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-12 20:57:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-12 20:57:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2018-10-12 20:57:27,706 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 30 states. [2018-10-12 20:57:29,156 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-10-12 20:57:29,541 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 20:57:29,740 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 20:57:29,991 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-12 20:57:30,210 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 20:57:30,532 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-12 20:57:30,715 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-12 20:57:31,131 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2018-10-12 20:57:32,060 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 20:57:32,417 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-12 20:57:32,785 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-10-12 20:57:33,070 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-12 20:57:33,234 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 20:57:34,141 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 20:57:34,406 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 20:57:34,575 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-12 20:57:34,774 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-12 20:57:35,095 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-12 20:57:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:35,152 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-12 20:57:35,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 20:57:35,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 105 [2018-10-12 20:57:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:35,156 INFO L225 Difference]: With dead ends: 130 [2018-10-12 20:57:35,156 INFO L226 Difference]: Without dead ends: 130 [2018-10-12 20:57:35,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=810, Invalid=2850, Unknown=0, NotChecked=0, Total=3660 [2018-10-12 20:57:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-12 20:57:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-12 20:57:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-12 20:57:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-12 20:57:35,165 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-12 20:57:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:35,166 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-12 20:57:35,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-12 20:57:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-12 20:57:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-12 20:57:35,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:35,168 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:35,169 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:35,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:35,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1795228401, now seen corresponding path program 4 times [2018-10-12 20:57:35,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:35,743 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-12 20:57:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:37,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:37,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-12 20:57:37,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-12 20:57:37,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-12 20:57:37,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1179, Unknown=0, NotChecked=0, Total=1260 [2018-10-12 20:57:37,256 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 36 states. [2018-10-12 20:57:38,765 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 20:57:39,163 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-10-12 20:57:39,487 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-12 20:57:39,822 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-12 20:57:40,055 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 20:57:40,272 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-12 20:57:40,500 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 20:57:40,686 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-12 20:57:41,061 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-12 20:57:41,392 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-12 20:57:41,644 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 20:57:42,077 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2018-10-12 20:57:42,492 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 118 [2018-10-12 20:57:42,742 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 20:57:42,913 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:43,229 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2018-10-12 20:57:43,539 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 20:57:43,764 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 20:57:44,253 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-12 20:57:44,440 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:44,646 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:44,827 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-12 20:57:45,255 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:45,449 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:45,611 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 20:57:45,799 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 20:57:46,135 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 20:57:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:46,183 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-12 20:57:46,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 20:57:46,184 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 118 [2018-10-12 20:57:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:46,186 INFO L225 Difference]: With dead ends: 143 [2018-10-12 20:57:46,186 INFO L226 Difference]: Without dead ends: 143 [2018-10-12 20:57:46,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1040, Invalid=4362, Unknown=0, NotChecked=0, Total=5402 [2018-10-12 20:57:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-12 20:57:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-12 20:57:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-12 20:57:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-12 20:57:46,196 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-12 20:57:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:46,197 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-12 20:57:46,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-12 20:57:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-12 20:57:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-12 20:57:46,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:57:46,199 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:57:46,200 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:57:46,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:57:46,200 INFO L82 PathProgramCache]: Analyzing trace with hash 836319481, now seen corresponding path program 5 times [2018-10-12 20:57:46,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:57:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:57:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:48,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:48,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-12 20:57:48,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-12 20:57:48,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-12 20:57:48,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1756, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 20:57:48,506 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 44 states. [2018-10-12 20:57:50,040 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 20:57:50,275 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:57:50,513 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 20:57:50,773 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-12 20:57:51,167 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-10-12 20:57:51,473 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-12 20:57:51,715 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-12 20:57:51,993 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 20:57:52,279 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-12 20:57:52,498 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 20:57:52,766 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-12 20:57:53,157 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 20:57:53,436 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-10-12 20:57:53,830 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2018-10-12 20:57:54,337 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 146 [2018-10-12 20:57:54,798 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 144 [2018-10-12 20:57:55,289 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2018-10-12 20:57:55,738 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-12 20:57:56,797 WARN L178 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 136 [2018-10-12 20:57:57,326 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-12 20:57:57,825 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2018-10-12 20:57:58,244 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 135 [2018-10-12 20:57:58,673 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-12 20:57:59,043 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2018-10-12 20:57:59,458 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2018-10-12 20:57:59,878 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2018-10-12 20:58:00,380 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-10-12 20:58:00,750 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2018-10-12 20:58:01,265 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2018-10-12 20:58:01,652 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2018-10-12 20:58:01,989 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2018-10-12 20:58:02,352 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2018-10-12 20:58:02,749 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-12 20:58:03,017 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 20:58:03,709 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-12 20:58:03,969 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-12 20:58:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:58:04,003 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-12 20:58:04,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-12 20:58:04,003 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 131 [2018-10-12 20:58:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:58:04,005 INFO L225 Difference]: With dead ends: 156 [2018-10-12 20:58:04,005 INFO L226 Difference]: Without dead ends: 156 [2018-10-12 20:58:04,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=1553, Invalid=6279, Unknown=0, NotChecked=0, Total=7832 [2018-10-12 20:58:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-12 20:58:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-12 20:58:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-12 20:58:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-12 20:58:04,015 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-12 20:58:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:58:04,016 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-12 20:58:04,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-12 20:58:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-12 20:58:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-12 20:58:04,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:58:04,018 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:58:04,019 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:58:04,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:58:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1500588367, now seen corresponding path program 6 times [2018-10-12 20:58:04,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:58:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:58:05,304 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-12 20:58:05,453 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 20:58:05,587 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 20:58:05,739 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-12 20:58:06,679 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-10-12 20:58:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:58:09,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:58:09,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-12 20:58:09,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-12 20:58:09,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-12 20:58:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2018-10-12 20:58:09,300 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 49 states. [2018-10-12 20:58:11,429 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-12 20:58:11,728 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-12 20:58:12,061 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-12 20:58:12,560 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-12 20:58:13,141 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 20:58:13,466 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 20:58:13,854 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-12 20:58:14,210 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-12 20:58:14,493 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-12 20:58:15,043 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2018-10-12 20:58:15,815 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-12 20:58:16,550 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 162 [2018-10-12 20:58:17,758 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 162 DAG size of output: 145 [2018-10-12 20:58:18,306 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 172 [2018-10-12 20:58:18,862 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-12 20:58:19,300 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2018-10-12 20:58:19,916 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 164 [2018-10-12 20:58:20,716 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2018-10-12 20:58:21,460 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2018-10-12 20:58:21,948 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2018-10-12 20:58:22,514 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2018-10-12 20:58:23,106 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2018-10-12 20:58:23,556 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2018-10-12 20:58:24,130 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2018-10-12 20:58:24,694 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2018-10-12 20:58:25,297 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-10-12 20:58:25,787 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-12 20:58:26,334 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 158 [2018-10-12 20:58:26,821 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2018-10-12 20:58:27,243 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-12 20:58:27,729 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-10-12 20:58:28,252 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-12 20:58:28,782 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 151 [2018-10-12 20:58:29,227 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2018-10-12 20:58:29,718 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-10-12 20:58:30,173 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2018-10-12 20:58:30,598 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-12 20:58:31,230 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2018-10-12 20:58:31,508 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-10-12 20:58:31,773 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-12 20:58:32,059 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-12 20:58:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:58:32,102 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-12 20:58:32,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-12 20:58:32,103 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 144 [2018-10-12 20:58:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:58:32,104 INFO L225 Difference]: With dead ends: 169 [2018-10-12 20:58:32,104 INFO L226 Difference]: Without dead ends: 169 [2018-10-12 20:58:32,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=1877, Invalid=8023, Unknown=0, NotChecked=0, Total=9900 [2018-10-12 20:58:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-12 20:58:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-12 20:58:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-12 20:58:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-12 20:58:32,114 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-12 20:58:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:58:32,114 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-12 20:58:32,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-12 20:58:32,114 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-12 20:58:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-12 20:58:32,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:58:32,117 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:58:32,117 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:58:32,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:58:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1287713977, now seen corresponding path program 7 times [2018-10-12 20:58:32,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:58:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:58:33,856 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2018-10-12 20:58:34,032 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2018-10-12 20:58:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:58:37,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:58:37,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-12 20:58:37,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-12 20:58:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-12 20:58:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2733, Unknown=0, NotChecked=0, Total=2862 [2018-10-12 20:58:37,759 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 54 states. [2018-10-12 20:58:39,612 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 20:58:39,949 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-12 20:58:40,425 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 20:58:40,808 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 20:58:41,462 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-12 20:58:41,900 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 20:58:42,326 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 20:58:42,744 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 20:58:43,182 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 20:58:43,515 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 20:58:44,131 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-12 20:58:44,723 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 20:58:45,155 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 20:58:45,749 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 164 [2018-10-12 20:58:46,576 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-12 20:58:47,005 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 20:58:47,333 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-12 20:58:47,933 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2018-10-12 20:58:48,747 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-12 20:58:49,163 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-12 20:58:49,517 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 20:58:49,926 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 20:58:50,324 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 20:58:50,641 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 20:58:51,232 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 166 [2018-10-12 20:58:51,868 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 20:58:52,265 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 20:58:52,606 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-12 20:58:53,004 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-12 20:58:53,396 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 20:58:53,701 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-10-12 20:58:54,043 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 20:58:54,587 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:58:54,964 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 20:58:55,288 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 20:58:55,648 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 20:58:55,999 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 20:58:56,300 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 20:58:56,901 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 [2018-10-12 20:58:57,426 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-12 20:58:57,787 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 20:58:58,106 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 20:58:58,437 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 20:58:58,769 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 20:58:59,062 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 20:58:59,631 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 20:58:59,959 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 20:59:00,238 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 20:59:00,567 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-10-12 20:59:01,189 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 20:59:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:01,278 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-12 20:59:01,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-12 20:59:01,278 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 157 [2018-10-12 20:59:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:01,281 INFO L225 Difference]: With dead ends: 182 [2018-10-12 20:59:01,281 INFO L226 Difference]: Without dead ends: 182 [2018-10-12 20:59:01,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1730, Invalid=10926, Unknown=0, NotChecked=0, Total=12656 [2018-10-12 20:59:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-12 20:59:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-12 20:59:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-12 20:59:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-12 20:59:01,289 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-12 20:59:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:01,290 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-12 20:59:01,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-12 20:59:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-12 20:59:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-12 20:59:01,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:01,293 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:59:01,293 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:01,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:01,294 INFO L82 PathProgramCache]: Analyzing trace with hash -695695985, now seen corresponding path program 8 times [2018-10-12 20:59:01,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:01,901 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2018-10-12 20:59:02,203 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-12 20:59:02,539 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 20:59:02,748 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 20:59:02,973 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 20:59:03,202 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 20:59:03,651 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 20:59:03,881 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 20:59:04,115 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-12 20:59:04,343 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-12 20:59:04,621 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2018-10-12 20:59:04,942 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2018-10-12 20:59:05,220 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 20:59:05,492 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 20:59:05,749 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 20:59:06,015 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 20:59:06,280 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-12 20:59:06,497 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-10-12 20:59:06,816 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-12 20:59:07,089 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-10-12 20:59:07,303 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 20:59:07,674 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 20:59:07,895 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-10-12 20:59:08,075 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 20:59:08,250 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-10-12 20:59:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:11,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:11,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-12 20:59:11,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-12 20:59:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-12 20:59:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=3395, Unknown=0, NotChecked=0, Total=3540 [2018-10-12 20:59:11,081 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 60 states. [2018-10-12 20:59:13,329 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-12 20:59:13,710 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-12 20:59:14,120 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 20:59:14,587 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-12 20:59:15,312 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-12 20:59:15,852 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2018-10-12 20:59:16,270 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-12 20:59:16,772 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 20:59:17,381 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2018-10-12 20:59:17,760 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 20:59:18,533 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2018-10-12 20:59:19,253 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 20:59:19,770 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-10-12 20:59:20,468 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 187 [2018-10-12 20:59:21,305 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 225 [2018-10-12 20:59:21,815 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-10-12 20:59:22,257 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 20:59:22,727 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 20:59:23,434 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 20:59:23,929 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 20:59:24,334 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 20:59:24,835 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 20:59:25,308 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 20:59:25,665 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-12 20:59:26,374 WARN L178 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2018-10-12 20:59:27,070 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 20:59:27,656 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 20:59:28,068 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 20:59:28,530 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 20:59:28,980 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 20:59:29,341 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-12 20:59:29,776 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 20:59:30,461 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2018-10-12 20:59:30,939 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 20:59:31,321 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 20:59:31,756 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-10-12 20:59:32,193 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 20:59:32,584 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-12 20:59:33,203 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-10-12 20:59:33,839 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 20:59:34,268 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2018-10-12 20:59:34,641 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-12 20:59:35,063 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-10-12 20:59:35,475 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2018-10-12 20:59:35,809 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:59:36,190 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 20:59:36,778 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 20:59:37,188 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 20:59:37,606 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 20:59:37,999 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:59:38,368 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:59:38,685 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 20:59:39,339 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:59:39,716 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 20:59:40,036 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 20:59:40,404 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-12 20:59:41,131 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 20:59:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:41,237 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-12 20:59:41,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-12 20:59:41,242 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 170 [2018-10-12 20:59:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:41,243 INFO L225 Difference]: With dead ends: 195 [2018-10-12 20:59:41,243 INFO L226 Difference]: Without dead ends: 195 [2018-10-12 20:59:41,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=1960, Invalid=13790, Unknown=0, NotChecked=0, Total=15750 [2018-10-12 20:59:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-12 20:59:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-12 20:59:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 20:59:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-12 20:59:41,250 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-12 20:59:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:41,250 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-12 20:59:41,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-12 20:59:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-12 20:59:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-12 20:59:41,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:41,253 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:59:41,253 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:41,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:41,254 INFO L82 PathProgramCache]: Analyzing trace with hash 955351161, now seen corresponding path program 9 times [2018-10-12 20:59:41,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:42,451 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-12 20:59:42,830 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 20:59:43,073 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 20:59:43,309 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 20:59:43,549 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-12 20:59:43,821 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 20:59:44,065 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 20:59:44,319 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-12 20:59:44,570 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-12 20:59:44,861 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 20:59:45,182 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 62 [2018-10-12 20:59:45,465 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 20:59:45,752 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 20:59:46,030 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 20:59:46,321 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 20:59:46,658 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 20:59:46,882 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 20:59:47,107 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 20:59:47,337 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 20:59:47,565 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 20:59:47,848 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 20:59:48,139 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 20:59:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:51,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:51,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-12 20:59:51,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-12 20:59:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-12 20:59:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4172, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 20:59:51,986 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 68 states. [2018-10-12 20:59:54,342 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-12 20:59:54,759 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 20:59:55,220 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2018-10-12 20:59:55,726 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 20:59:56,463 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2018-10-12 20:59:57,038 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-10-12 20:59:57,495 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 20:59:58,103 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 20:59:58,688 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-10-12 20:59:59,169 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2018-10-12 20:59:59,659 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-10-12 21:00:00,351 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 21:00:00,894 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-12 21:00:01,597 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2018-10-12 21:00:02,403 WARN L178 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 247 [2018-10-12 21:00:03,341 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2018-10-12 21:00:04,069 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-12 21:00:04,912 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 211 [2018-10-12 21:00:05,945 WARN L178 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2018-10-12 21:00:06,879 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-12 21:00:07,550 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-12 21:00:08,414 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 242 [2018-10-12 21:00:09,317 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 241 [2018-10-12 21:00:10,066 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 202 [2018-10-12 21:00:10,929 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-12 21:00:11,837 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-12 21:00:12,795 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 223 [2018-10-12 21:00:13,518 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2018-10-12 21:00:14,310 WARN L178 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-12 21:00:15,128 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2018-10-12 21:00:15,811 WARN L178 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2018-10-12 21:00:16,558 WARN L178 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-12 21:00:17,352 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 202 [2018-10-12 21:00:18,142 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-12 21:00:18,903 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2018-10-12 21:00:19,665 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 218 [2018-10-12 21:00:20,462 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 217 [2018-10-12 21:00:21,139 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2018-10-12 21:00:21,887 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-12 21:00:22,704 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-12 21:00:23,522 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-12 21:00:24,228 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-12 21:00:24,983 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 206 [2018-10-12 21:00:25,760 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-12 21:00:26,445 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2018-10-12 21:00:27,179 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-12 21:00:27,923 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2018-10-12 21:00:28,725 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-12 21:00:29,395 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 177 [2018-10-12 21:00:30,116 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 190 [2018-10-12 21:00:30,833 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-12 21:00:31,492 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2018-10-12 21:00:32,151 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-12 21:00:32,857 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2018-10-12 21:00:33,615 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 186 [2018-10-12 21:00:34,311 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 170 [2018-10-12 21:00:34,993 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2018-10-12 21:00:35,690 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 176 [2018-10-12 21:00:36,388 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2018-10-12 21:00:37,026 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2018-10-12 21:00:37,759 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 176 [2018-10-12 21:00:38,212 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2018-10-12 21:00:38,626 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:00:39,130 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 21:00:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:00:39,190 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-12 21:00:39,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-12 21:00:39,191 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 183 [2018-10-12 21:00:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:00:39,192 INFO L225 Difference]: With dead ends: 208 [2018-10-12 21:00:39,192 INFO L226 Difference]: Without dead ends: 208 [2018-10-12 21:00:39,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3756 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=3639, Invalid=16101, Unknown=0, NotChecked=0, Total=19740 [2018-10-12 21:00:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-12 21:00:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-12 21:00:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-12 21:00:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-12 21:00:39,198 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-12 21:00:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:00:39,198 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-12 21:00:39,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-12 21:00:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-12 21:00:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-12 21:00:39,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:00:39,201 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:00:39,201 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:00:39,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:00:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 187240911, now seen corresponding path program 10 times [2018-10-12 21:00:39,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:00:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:00:40,876 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:00:41,273 WARN L178 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:00:41,677 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:00:42,118 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:00:42,544 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:00:42,973 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:00:43,400 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:00:43,824 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-12 21:00:44,367 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-12 21:00:44,866 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 21:00:45,386 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-12 21:00:45,853 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:00:46,332 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:00:46,808 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:00:47,305 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:00:47,828 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-12 21:00:48,211 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 21:00:48,604 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:00:48,990 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:00:49,444 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:00:49,827 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:00:50,204 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 21:00:50,485 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:00:50,766 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:00:51,047 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:00:51,322 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:00:51,606 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:00:51,885 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:00:52,109 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 21:00:52,328 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:00:52,548 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:00:52,777 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 21:00:52,995 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 21:00:53,226 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:00:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:00:56,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:00:56,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-12 21:00:56,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-12 21:00:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-12 21:00:56,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4860, Unknown=0, NotChecked=0, Total=5256 [2018-10-12 21:00:56,650 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 73 states. [2018-10-12 21:00:58,621 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 21:00:59,064 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 21:00:59,638 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-10-12 21:01:00,235 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-12 21:01:00,995 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-12 21:01:01,637 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-12 21:01:02,155 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 21:01:02,786 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2018-10-12 21:01:03,432 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2018-10-12 21:01:03,961 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-12 21:01:04,975 WARN L178 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 235 [2018-10-12 21:01:06,104 WARN L178 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 238 [2018-10-12 21:01:07,155 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-12 21:01:08,242 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 224 [2018-10-12 21:01:09,605 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 293 DAG size of output: 270 [2018-10-12 21:01:10,654 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-12 21:01:11,444 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 218 [2018-10-12 21:01:12,465 WARN L178 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 238 [2018-10-12 21:01:13,692 WARN L178 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 243 [2018-10-12 21:01:14,882 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-12 21:01:15,680 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 229 [2018-10-12 21:01:16,614 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 274 [2018-10-12 21:01:17,620 WARN L178 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 268 [2018-10-12 21:01:18,454 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-12 21:01:19,467 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 243 [2018-10-12 21:01:20,593 WARN L178 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-12 21:01:21,686 WARN L178 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 249 [2018-10-12 21:01:22,466 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 222 [2018-10-12 21:01:23,384 WARN L178 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 260 [2018-10-12 21:01:24,330 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 254 [2018-10-12 21:01:25,185 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 216 [2018-10-12 21:01:26,115 WARN L178 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 225 [2018-10-12 21:01:27,093 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 228 [2018-10-12 21:01:28,122 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 231 [2018-10-12 21:01:28,898 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 217 [2018-10-12 21:01:29,800 WARN L178 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 250 [2018-10-12 21:01:30,802 WARN L178 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 248 [2018-10-12 21:01:31,580 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2018-10-12 21:01:32,500 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 225 [2018-10-12 21:01:33,483 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 228 [2018-10-12 21:01:34,502 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 231 [2018-10-12 21:01:35,307 WARN L178 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-12 21:01:36,224 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 238 [2018-10-12 21:01:37,124 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-12 21:01:37,899 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2018-10-12 21:01:38,808 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-12 21:01:39,809 WARN L178 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 221 [2018-10-12 21:01:40,936 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-12 21:01:41,696 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 205 [2018-10-12 21:01:42,574 WARN L178 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 226 [2018-10-12 21:01:43,447 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 220 [2018-10-12 21:01:44,210 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 199 [2018-10-12 21:01:45,034 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 208 [2018-10-12 21:01:45,991 WARN L178 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 211 [2018-10-12 21:01:46,864 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 214 [2018-10-12 21:01:47,640 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2018-10-12 21:01:48,488 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 214 [2018-10-12 21:01:49,312 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 209 [2018-10-12 21:01:50,057 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2018-10-12 21:01:50,922 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 202 [2018-10-12 21:01:51,743 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2018-10-12 21:01:52,564 WARN L178 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2018-10-12 21:01:53,308 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-12 21:01:54,094 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 200 [2018-10-12 21:01:54,875 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 195 [2018-10-12 21:01:55,620 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2018-10-12 21:01:56,521 WARN L178 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-12 21:01:57,045 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2018-10-12 21:01:57,548 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-10-12 21:01:58,083 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:01:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:01:58,128 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-12 21:01:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-12 21:01:58,129 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 196 [2018-10-12 21:01:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:01:58,131 INFO L225 Difference]: With dead ends: 221 [2018-10-12 21:01:58,131 INFO L226 Difference]: Without dead ends: 221 [2018-10-12 21:01:58,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 75.1s TimeCoverageRelationStatistics Valid=4107, Invalid=18845, Unknown=0, NotChecked=0, Total=22952 [2018-10-12 21:01:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-12 21:01:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-12 21:01:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-12 21:01:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-12 21:01:58,138 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-12 21:01:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:01:58,138 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-12 21:01:58,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-12 21:01:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-12 21:01:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-12 21:01:58,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:01:58,140 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:01:58,140 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:01:58,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:01:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1241963577, now seen corresponding path program 11 times [2018-10-12 21:01:58,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:01:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:01:59,926 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-12 21:02:00,521 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:02:01,240 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:02:01,836 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:02:02,449 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-12 21:02:03,048 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:02:03,682 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:02:04,287 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-12 21:02:04,938 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-12 21:02:05,659 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-12 21:02:06,528 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-12 21:02:07,245 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:02:07,976 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:02:08,704 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 21:02:09,406 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 21:02:10,084 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-12 21:02:10,634 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-12 21:02:11,260 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:02:11,814 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:02:12,349 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:02:12,863 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:02:13,386 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-12 21:02:13,722 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 21:02:14,027 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:02:14,346 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:02:14,660 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 21:02:14,984 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 21:02:15,345 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 21:02:15,599 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 21:02:15,845 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:02:16,106 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:02:16,419 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 21:02:16,678 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 21:02:16,963 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 21:02:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:02:21,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:02:21,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-12 21:02:21,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-12 21:02:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-12 21:02:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=5750, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 21:02:21,886 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 79 states. [2018-10-12 21:02:24,744 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 21:02:25,296 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-10-12 21:02:25,916 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-12 21:02:26,722 WARN L178 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-10-12 21:02:27,758 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-12 21:02:28,510 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-12 21:02:29,129 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-12 21:02:29,887 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2018-10-12 21:02:30,658 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2018-10-12 21:02:31,244 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-12 21:02:32,433 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 251 [2018-10-12 21:02:33,861 WARN L178 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 254 [2018-10-12 21:02:35,078 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 270 DAG size of output: 257 [2018-10-12 21:02:35,965 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 243 [2018-10-12 21:02:37,093 WARN L178 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 299 [2018-10-12 21:02:38,214 WARN L178 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 296 [2018-10-12 21:02:39,118 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 240 [2018-10-12 21:02:40,149 WARN L178 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 248 [2018-10-12 21:02:41,586 WARN L178 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 251 [2018-10-12 21:02:42,882 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 254 [2018-10-12 21:02:43,763 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 242 [2018-10-12 21:02:44,835 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 292 [2018-10-12 21:02:45,991 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 285 [2018-10-12 21:02:46,892 WARN L178 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-12 21:02:48,139 WARN L178 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 270 [2018-10-12 21:02:49,586 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 284 DAG size of output: 271 [2018-10-12 21:02:50,869 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 289 DAG size of output: 274 [2018-10-12 21:02:51,788 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 241 [2018-10-12 21:02:52,942 WARN L178 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 285 [2018-10-12 21:02:54,080 WARN L178 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2018-10-12 21:02:54,971 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2018-10-12 21:02:56,047 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 242 [2018-10-12 21:02:57,183 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 245 [2018-10-12 21:02:58,428 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 263 DAG size of output: 248 [2018-10-12 21:02:59,298 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 237 [2018-10-12 21:03:00,337 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 276 [2018-10-12 21:03:01,418 WARN L178 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-12 21:03:02,354 WARN L178 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 231 [2018-10-12 21:03:03,453 WARN L178 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-12 21:03:04,621 WARN L178 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 251 [2018-10-12 21:03:05,832 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 254 [2018-10-12 21:03:06,724 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-12 21:03:07,832 WARN L178 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 260 [2018-10-12 21:03:08,882 WARN L178 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 255 [2018-10-12 21:03:09,752 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 21:03:10,731 WARN L178 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 230 [2018-10-12 21:03:11,796 WARN L178 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 233 [2018-10-12 21:03:12,965 WARN L178 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 236 [2018-10-12 21:03:13,844 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-12 21:03:14,861 WARN L178 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 251 [2018-10-12 21:03:15,862 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 246 [2018-10-12 21:03:16,734 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2018-10-12 21:03:17,770 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 231 [2018-10-12 21:03:18,832 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 232 [2018-10-12 21:03:19,931 WARN L178 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 235 [2018-10-12 21:03:20,841 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-12 21:03:21,831 WARN L178 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-12 21:03:22,851 WARN L178 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 234 [2018-10-12 21:03:23,778 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2018-10-12 21:03:24,787 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 219 [2018-10-12 21:03:25,836 WARN L178 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 224 [2018-10-12 21:03:26,889 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 227 [2018-10-12 21:03:27,775 WARN L178 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-12 21:03:28,744 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 224 [2018-10-12 21:03:29,698 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 218 [2018-10-12 21:03:30,548 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-12 21:03:31,414 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 209 [2018-10-12 21:03:32,362 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 212 [2018-10-12 21:03:33,374 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 215 [2018-10-12 21:03:34,190 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 199 [2018-10-12 21:03:35,053 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 205 [2018-10-12 21:03:35,924 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2018-10-12 21:03:36,780 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 199 [2018-10-12 21:03:37,763 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2018-10-12 21:03:38,432 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2018-10-12 21:03:39,011 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 21:03:39,610 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 21:03:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:03:39,687 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-12 21:03:39,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-12 21:03:39,688 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 209 [2018-10-12 21:03:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:03:39,689 INFO L225 Difference]: With dead ends: 234 [2018-10-12 21:03:39,689 INFO L226 Difference]: Without dead ends: 234 [2018-10-12 21:03:39,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5393 ImplicationChecksByTransitivity, 95.3s TimeCoverageRelationStatistics Valid=4521, Invalid=22539, Unknown=0, NotChecked=0, Total=27060 [2018-10-12 21:03:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-12 21:03:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-12 21:03:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-12 21:03:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-12 21:03:39,694 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-12 21:03:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:03:39,695 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-12 21:03:39,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-12 21:03:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-12 21:03:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-12 21:03:39,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:03:39,697 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:03:39,697 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:03:39,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:03:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1630981647, now seen corresponding path program 12 times [2018-10-12 21:03:39,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:03:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:03:42,547 WARN L178 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 76 [2018-10-12 21:03:43,650 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:03:44,694 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:03:45,832 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:03:47,016 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-12 21:03:48,196 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:03:49,467 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:03:50,608 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-12 21:03:51,660 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-12 21:03:52,915 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 398 DAG size of output: 80 [2018-10-12 21:03:54,312 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 411 DAG size of output: 82 [2018-10-12 21:03:55,545 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-12 21:03:56,792 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 395 DAG size of output: 77 [2018-10-12 21:03:58,098 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-12 21:03:59,358 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 393 DAG size of output: 75 [2018-10-12 21:04:00,717 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 293 DAG size of output: 70 [2018-10-12 21:04:01,698 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 74 [2018-10-12 21:04:02,659 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-12 21:04:03,640 WARN L178 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2018-10-12 21:04:04,698 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-12 21:04:05,682 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 69 [2018-10-12 21:04:06,645 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-12 21:04:07,214 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 21:04:07,775 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:04:08,326 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:04:08,923 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:04:09,525 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:04:10,141 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-12 21:04:10,602 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 21:04:11,054 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:04:11,490 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:04:11,935 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:04:12,374 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:04:12,824 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 21:04:13,149 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:04:13,464 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:04:13,783 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:04:14,184 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:04:14,509 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:04:14,824 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:04:15,094 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 21:04:15,400 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:04:15,662 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:04:15,936 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 21:04:16,187 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 21:04:16,446 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:04:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:04:20,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:04:20,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-12 21:04:20,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-12 21:04:20,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-12 21:04:20,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=6712, Unknown=0, NotChecked=0, Total=7140 [2018-10-12 21:04:20,922 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 85 states. [2018-10-12 21:04:24,025 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 21:04:24,554 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:04:25,239 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:04:25,976 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-12 21:04:26,762 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-10-12 21:04:28,030 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-12 21:04:28,917 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2018-10-12 21:04:29,736 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-12 21:04:30,655 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2018-10-12 21:04:31,584 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2018-10-12 21:04:32,281 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2018-10-12 21:04:33,610 WARN L178 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 270 [2018-10-12 21:04:35,474 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 283 DAG size of output: 273 [2018-10-12 21:04:36,996 WARN L178 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 288 DAG size of output: 276 [2018-10-12 21:04:38,071 WARN L178 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 263 [2018-10-12 21:04:39,369 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 343 DAG size of output: 323 [2018-10-12 21:04:40,850 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 327 DAG size of output: 317 [2018-10-12 21:04:41,968 WARN L178 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 257 [2018-10-12 21:04:43,328 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 280 DAG size of output: 267 [2018-10-12 21:04:45,073 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 286 DAG size of output: 272 [2018-10-12 21:04:46,556 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 292 DAG size of output: 275 [2018-10-12 21:04:47,570 WARN L178 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 253 [2018-10-12 21:04:48,884 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 329 DAG size of output: 306 [2018-10-12 21:04:50,380 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 321 DAG size of output: 305 [2018-10-12 21:04:51,481 WARN L178 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 252 [2018-10-12 21:04:52,855 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 296 DAG size of output: 282 [2018-10-12 21:04:54,581 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 302 DAG size of output: 287 [2018-10-12 21:04:56,156 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 308 DAG size of output: 290 [2018-10-12 21:04:57,252 WARN L178 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-12 21:04:58,559 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 323 DAG size of output: 297 [2018-10-12 21:04:59,997 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-12 21:05:01,088 WARN L178 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 247 [2018-10-12 21:05:02,450 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 279 DAG size of output: 262 [2018-10-12 21:05:04,194 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 285 DAG size of output: 267 [2018-10-12 21:05:05,774 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 291 DAG size of output: 270 [2018-10-12 21:05:06,835 WARN L178 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 249 [2018-10-12 21:05:08,112 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 321 DAG size of output: 294 [2018-10-12 21:05:09,511 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 313 DAG size of output: 295 [2018-10-12 21:05:10,714 WARN L178 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 250 [2018-10-12 21:05:12,021 WARN L178 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 269 [2018-10-12 21:05:13,351 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 289 DAG size of output: 272 [2018-10-12 21:05:14,777 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 295 DAG size of output: 275 [2018-10-12 21:05:15,883 WARN L178 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 242 [2018-10-12 21:05:17,072 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 280 [2018-10-12 21:05:18,332 WARN L178 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 281 [2018-10-12 21:05:19,984 WARN L178 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 253 DAG size of output: 243 [2018-10-12 21:05:21,226 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 249 [2018-10-12 21:05:22,453 WARN L178 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 252 [2018-10-12 21:05:23,740 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 277 DAG size of output: 255 [2018-10-12 21:05:24,766 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 237 [2018-10-12 21:05:26,026 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 270 [2018-10-12 21:05:27,247 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 271 [2018-10-12 21:05:28,295 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 238 [2018-10-12 21:05:29,506 WARN L178 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 250 [2018-10-12 21:05:30,846 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 271 DAG size of output: 253 [2018-10-12 21:05:32,191 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 277 DAG size of output: 256 [2018-10-12 21:05:33,229 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 231 [2018-10-12 21:05:34,849 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 287 DAG size of output: 254 [2018-10-12 21:05:36,564 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 279 DAG size of output: 254 [2018-10-12 21:05:37,582 WARN L178 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 231 [2018-10-12 21:05:38,733 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 243 [2018-10-12 21:05:39,948 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 245 [2018-10-12 21:05:41,279 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 267 DAG size of output: 248 [2018-10-12 21:05:42,311 WARN L178 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 228 [2018-10-12 21:05:43,449 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 249 [2018-10-12 21:05:44,564 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 249 [2018-10-12 21:05:45,570 WARN L178 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 228 [2018-10-12 21:05:46,718 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 233 [2018-10-12 21:05:47,804 WARN L178 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 235 [2018-10-12 21:05:48,899 WARN L178 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 238 [2018-10-12 21:05:49,859 WARN L178 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 221 [2018-10-12 21:05:50,872 WARN L178 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 234 [2018-10-12 21:05:51,987 WARN L178 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 233 [2018-10-12 21:05:52,945 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 220 [2018-10-12 21:05:53,916 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 21:05:54,929 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 227 [2018-10-12 21:05:55,952 WARN L178 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 230 [2018-10-12 21:05:56,975 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 214 [2018-10-12 21:05:57,949 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 220 [2018-10-12 21:05:58,941 WARN L178 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2018-10-12 21:05:59,861 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2018-10-12 21:06:00,888 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 220 [2018-10-12 21:06:01,571 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2018-10-12 21:06:02,194 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-10-12 21:06:02,860 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-12 21:06:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:06:02,963 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-12 21:06:02,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-12 21:06:02,964 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 222 [2018-10-12 21:06:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:06:02,966 INFO L225 Difference]: With dead ends: 247 [2018-10-12 21:06:02,966 INFO L226 Difference]: Without dead ends: 247 [2018-10-12 21:06:02,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6359 ImplicationChecksByTransitivity, 134.4s TimeCoverageRelationStatistics Valid=4935, Invalid=26571, Unknown=0, NotChecked=0, Total=31506 [2018-10-12 21:06:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-12 21:06:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-12 21:06:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-12 21:06:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-12 21:06:02,972 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-12 21:06:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:06:02,973 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-12 21:06:02,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-12 21:06:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-12 21:06:02,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-12 21:06:02,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:02,974 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:06:02,974 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:02,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1218250745, now seen corresponding path program 13 times [2018-10-12 21:06:02,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:06,427 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-12 21:06:07,933 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:06:09,452 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:06:11,006 WARN L178 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:06:12,587 WARN L178 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 551 DAG size of output: 80