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/20051113-1.c_false-valid-memtrack.i_25.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:18:12,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:18:12,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:18:12,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:18:12,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:18:12,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:18:12,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:18:12,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:18:12,524 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:18:12,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:18:12,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:18:12,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:18:12,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:18:12,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:18:12,529 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:18:12,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:18:12,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:18:12,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:18:12,535 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:18:12,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:18:12,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:18:12,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:18:12,542 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:18:12,552 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:18:12,562 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:18:12,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:18:12,563 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:18:12,563 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:18:12,563 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:18:12,564 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:18:12,566 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:18:12,567 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:18:12,567 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:18:12,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:18:12,567 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:18:12,567 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:18:12,569 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:18:12,569 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:18:12,570 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:18:12,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:18:12,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:18:12,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:18:12,651 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:18:12,651 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:18:12,652 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_25.bpl [2018-10-14 16:18:12,653 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_25.bpl' [2018-10-14 16:18:12,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:18:12,725 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:18:12,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:18:12,727 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:18:12,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:18:12,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:18:12,814 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:18:12,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (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 [2018-10-14 16:18:12,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:18:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:18:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:18:13,814 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:18:13,815 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13 BoogieIcfgContainer [2018-10-14 16:18:13,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:18:13,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:18:13,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:18:13,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:18:13,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/2) ... [2018-10-14 16:18:13,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4937e6ad and model type 20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:18:13, skipping insertion in model container [2018-10-14 16:18:13,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13" (2/2) ... [2018-10-14 16:18:13,824 INFO L112 eAbstractionObserver]: Analyzing ICFG 20051113-1.c_false-valid-memtrack.i_25.bpl [2018-10-14 16:18:13,834 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:18:13,844 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:18:13,862 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:18:13,893 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:18:13,894 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:18:13,894 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:18:13,894 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:18:13,894 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:18:13,894 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:18:13,895 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:18:13,895 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:18:13,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:18:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2018-10-14 16:18:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-14 16:18:13,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:13,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:13,954 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:13,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash 629509728, now seen corresponding path program 1 times [2018-10-14 16:18:14,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:14,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:18:14,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-14 16:18:14,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-14 16:18:14,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-14 16:18:14,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:18:14,373 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2018-10-14 16:18:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:14,507 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-14 16:18:14,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-14 16:18:14,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2018-10-14 16:18:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:14,523 INFO L225 Difference]: With dead ends: 121 [2018-10-14 16:18:14,523 INFO L226 Difference]: Without dead ends: 121 [2018-10-14 16:18:14,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:18:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-14 16:18:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2018-10-14 16:18:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-14 16:18:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-14 16:18:14,573 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 115 [2018-10-14 16:18:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:14,574 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-14 16:18:14,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-14 16:18:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-14 16:18:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-14 16:18:14,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:14,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:14,580 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:14,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash 88629630, now seen corresponding path program 1 times [2018-10-14 16:18:14,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:14,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:14,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-14 16:18:14,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-14 16:18:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-14 16:18:14,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-14 16:18:14,801 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 5 states. [2018-10-14 16:18:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:14,995 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-14 16:18:14,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-14 16:18:14,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-14 16:18:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:14,998 INFO L225 Difference]: With dead ends: 124 [2018-10-14 16:18:14,999 INFO L226 Difference]: Without dead ends: 124 [2018-10-14 16:18:15,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-14 16:18:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2018-10-14 16:18:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-14 16:18:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-14 16:18:15,012 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 118 [2018-10-14 16:18:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:15,012 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-14 16:18:15,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-14 16:18:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-14 16:18:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-14 16:18:15,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:15,017 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:15,019 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:15,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1446924704, now seen corresponding path program 2 times [2018-10-14 16:18:15,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:15,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-14 16:18:15,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-14 16:18:15,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-14 16:18:15,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:15,243 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 6 states. [2018-10-14 16:18:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:15,376 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-14 16:18:15,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-14 16:18:15,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-14 16:18:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:15,381 INFO L225 Difference]: With dead ends: 127 [2018-10-14 16:18:15,381 INFO L226 Difference]: Without dead ends: 127 [2018-10-14 16:18:15,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:18:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-14 16:18:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2018-10-14 16:18:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-14 16:18:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-14 16:18:15,392 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 121 [2018-10-14 16:18:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:15,393 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-14 16:18:15,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-14 16:18:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-14 16:18:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-14 16:18:15,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:15,395 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:15,396 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:15,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash -766388674, now seen corresponding path program 3 times [2018-10-14 16:18:15,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:15,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-14 16:18:15,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:18:15,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:18:15,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:18:15,658 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 7 states. [2018-10-14 16:18:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,119 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-14 16:18:16,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-14 16:18:16,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2018-10-14 16:18:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,124 INFO L225 Difference]: With dead ends: 130 [2018-10-14 16:18:16,124 INFO L226 Difference]: Without dead ends: 130 [2018-10-14 16:18:16,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:18:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-14 16:18:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2018-10-14 16:18:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-14 16:18:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-14 16:18:16,146 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 124 [2018-10-14 16:18:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,146 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-14 16:18:16,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:18:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-14 16:18:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-14 16:18:16,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,153 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:16,153 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1247304480, now seen corresponding path program 4 times [2018-10-14 16:18:16,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:16,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:16,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:18:16,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:18:16,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:18:16,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:18:16,553 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 8 states. [2018-10-14 16:18:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,763 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-14 16:18:16,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:18:16,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2018-10-14 16:18:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,770 INFO L225 Difference]: With dead ends: 133 [2018-10-14 16:18:16,770 INFO L226 Difference]: Without dead ends: 133 [2018-10-14 16:18:16,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:18:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-14 16:18:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2018-10-14 16:18:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-14 16:18:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-14 16:18:16,780 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 127 [2018-10-14 16:18:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,780 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-14 16:18:16,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:18:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-14 16:18:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-14 16:18:16,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,783 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:16,783 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,784 INFO L82 PathProgramCache]: Analyzing trace with hash -199181570, now seen corresponding path program 5 times [2018-10-14 16:18:16,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:17,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:17,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-14 16:18:17,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:18:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:18:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:18:17,016 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 9 states. [2018-10-14 16:18:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:17,210 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-14 16:18:17,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:18:17,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2018-10-14 16:18:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:17,212 INFO L225 Difference]: With dead ends: 136 [2018-10-14 16:18:17,212 INFO L226 Difference]: Without dead ends: 136 [2018-10-14 16:18:17,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-14 16:18:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2018-10-14 16:18:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-14 16:18:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-14 16:18:17,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 130 [2018-10-14 16:18:17,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:17,221 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-14 16:18:17,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:18:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-14 16:18:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-14 16:18:17,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:17,223 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:17,224 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:17,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:17,224 INFO L82 PathProgramCache]: Analyzing trace with hash 18188320, now seen corresponding path program 6 times [2018-10-14 16:18:17,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:17,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:17,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:18:17,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:18:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:18:17,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:18:17,463 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 10 states. [2018-10-14 16:18:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:17,674 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-14 16:18:17,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:18:17,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 133 [2018-10-14 16:18:17,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:17,675 INFO L225 Difference]: With dead ends: 139 [2018-10-14 16:18:17,675 INFO L226 Difference]: Without dead ends: 139 [2018-10-14 16:18:17,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-14 16:18:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2018-10-14 16:18:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-14 16:18:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-14 16:18:17,682 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 133 [2018-10-14 16:18:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:17,682 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-14 16:18:17,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:18:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-14 16:18:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-14 16:18:17,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:17,685 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:17,685 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:17,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1126101058, now seen corresponding path program 7 times [2018-10-14 16:18:17,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:18,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:18:18,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:18:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:18:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:18:18,125 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 11 states. [2018-10-14 16:18:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:18,440 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-14 16:18:18,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:18:18,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2018-10-14 16:18:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:18,444 INFO L225 Difference]: With dead ends: 142 [2018-10-14 16:18:18,444 INFO L226 Difference]: Without dead ends: 142 [2018-10-14 16:18:18,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-14 16:18:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2018-10-14 16:18:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-14 16:18:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-14 16:18:18,456 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 136 [2018-10-14 16:18:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:18,456 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-14 16:18:18,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:18:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-14 16:18:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-14 16:18:18,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:18,467 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:18,468 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:18,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1495532704, now seen corresponding path program 8 times [2018-10-14 16:18:18,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:18,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:18:18,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:18:18,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:18:18,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:18:18,707 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 12 states. [2018-10-14 16:18:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:19,060 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-14 16:18:19,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:18:19,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2018-10-14 16:18:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:19,068 INFO L225 Difference]: With dead ends: 145 [2018-10-14 16:18:19,068 INFO L226 Difference]: Without dead ends: 145 [2018-10-14 16:18:19,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-14 16:18:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-10-14 16:18:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-14 16:18:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-14 16:18:19,079 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 139 [2018-10-14 16:18:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:19,084 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-14 16:18:19,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:18:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-14 16:18:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-14 16:18:19,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:19,087 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:19,089 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:19,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash 767480958, now seen corresponding path program 9 times [2018-10-14 16:18:19,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:19,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:19,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-14 16:18:19,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-14 16:18:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-14 16:18:19,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:18:19,338 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 13 states. [2018-10-14 16:18:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:19,577 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-14 16:18:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:18:19,584 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 142 [2018-10-14 16:18:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:19,585 INFO L225 Difference]: With dead ends: 148 [2018-10-14 16:18:19,585 INFO L226 Difference]: Without dead ends: 148 [2018-10-14 16:18:19,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-14 16:18:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2018-10-14 16:18:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-14 16:18:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-14 16:18:19,589 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 142 [2018-10-14 16:18:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:19,590 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-14 16:18:19,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-14 16:18:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-14 16:18:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-14 16:18:19,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:19,591 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:19,592 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:19,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:19,592 INFO L82 PathProgramCache]: Analyzing trace with hash 105840288, now seen corresponding path program 10 times [2018-10-14 16:18:19,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:20,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-14 16:18:20,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-14 16:18:20,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-14 16:18:20,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:20,044 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 14 states. [2018-10-14 16:18:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:20,320 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-14 16:18:20,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:18:20,321 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 145 [2018-10-14 16:18:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:20,322 INFO L225 Difference]: With dead ends: 151 [2018-10-14 16:18:20,322 INFO L226 Difference]: Without dead ends: 151 [2018-10-14 16:18:20,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=331, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-14 16:18:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2018-10-14 16:18:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-14 16:18:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-14 16:18:20,326 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 145 [2018-10-14 16:18:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:20,326 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-14 16:18:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-14 16:18:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-14 16:18:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-14 16:18:20,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:20,328 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:20,328 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:20,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1226438338, now seen corresponding path program 11 times [2018-10-14 16:18:20,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:20,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-14 16:18:20,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:18:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:18:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:18:20,699 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 15 states. [2018-10-14 16:18:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:21,325 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-14 16:18:21,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:18:21,326 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2018-10-14 16:18:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:21,327 INFO L225 Difference]: With dead ends: 154 [2018-10-14 16:18:21,327 INFO L226 Difference]: Without dead ends: 154 [2018-10-14 16:18:21,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-14 16:18:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2018-10-14 16:18:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-14 16:18:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-14 16:18:21,332 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 148 [2018-10-14 16:18:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:21,332 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-14 16:18:21,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:18:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-14 16:18:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-14 16:18:21,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:21,334 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:21,334 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:21,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:21,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1346203168, now seen corresponding path program 12 times [2018-10-14 16:18:21,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:22,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:22,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-14 16:18:22,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-14 16:18:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-14 16:18:22,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:22,138 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 16 states. [2018-10-14 16:18:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:22,438 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-14 16:18:22,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:18:22,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2018-10-14 16:18:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:22,439 INFO L225 Difference]: With dead ends: 157 [2018-10-14 16:18:22,439 INFO L226 Difference]: Without dead ends: 157 [2018-10-14 16:18:22,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-14 16:18:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2018-10-14 16:18:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-14 16:18:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-14 16:18:22,444 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 151 [2018-10-14 16:18:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:22,445 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-14 16:18:22,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-14 16:18:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-14 16:18:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-14 16:18:22,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:22,446 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:22,446 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:22,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash -142430722, now seen corresponding path program 13 times [2018-10-14 16:18:22,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:22,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:22,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-14 16:18:22,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:18:22,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:18:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:18:22,694 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 17 states. [2018-10-14 16:18:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:23,146 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-14 16:18:23,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:18:23,154 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2018-10-14 16:18:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:23,155 INFO L225 Difference]: With dead ends: 160 [2018-10-14 16:18:23,155 INFO L226 Difference]: Without dead ends: 160 [2018-10-14 16:18:23,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:18:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-14 16:18:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2018-10-14 16:18:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-14 16:18:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-14 16:18:23,160 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 154 [2018-10-14 16:18:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:23,161 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-14 16:18:23,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:18:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-14 16:18:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-14 16:18:23,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:23,162 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:23,162 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:23,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1534413536, now seen corresponding path program 14 times [2018-10-14 16:18:23,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:24,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:24,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-14 16:18:24,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-14 16:18:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-14 16:18:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:24,117 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 18 states. [2018-10-14 16:18:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:24,547 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-14 16:18:24,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-14 16:18:24,547 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2018-10-14 16:18:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:24,548 INFO L225 Difference]: With dead ends: 163 [2018-10-14 16:18:24,548 INFO L226 Difference]: Without dead ends: 163 [2018-10-14 16:18:24,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=391, Invalid=601, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-14 16:18:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2018-10-14 16:18:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-14 16:18:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-14 16:18:24,553 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 157 [2018-10-14 16:18:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:24,554 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-14 16:18:24,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-14 16:18:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-14 16:18:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-14 16:18:24,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:24,555 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:24,556 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:24,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2109784766, now seen corresponding path program 15 times [2018-10-14 16:18:24,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:24,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:24,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:18:24,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:18:24,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:18:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:18:24,898 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 19 states. [2018-10-14 16:18:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:25,441 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-14 16:18:25,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-14 16:18:25,450 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2018-10-14 16:18:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:25,451 INFO L225 Difference]: With dead ends: 166 [2018-10-14 16:18:25,451 INFO L226 Difference]: Without dead ends: 166 [2018-10-14 16:18:25,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=441, Invalid=681, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-14 16:18:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2018-10-14 16:18:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-14 16:18:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-14 16:18:25,457 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 160 [2018-10-14 16:18:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:25,457 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-14 16:18:25,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:18:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-14 16:18:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-14 16:18:25,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:25,459 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:25,460 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:25,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1761908640, now seen corresponding path program 16 times [2018-10-14 16:18:25,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:26,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:26,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:18:26,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:18:26,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:18:26,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:26,076 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 20 states. [2018-10-14 16:18:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:26,404 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-14 16:18:26,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:18:26,405 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 163 [2018-10-14 16:18:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:26,406 INFO L225 Difference]: With dead ends: 169 [2018-10-14 16:18:26,406 INFO L226 Difference]: Without dead ends: 169 [2018-10-14 16:18:26,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=494, Invalid=766, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-14 16:18:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2018-10-14 16:18:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-14 16:18:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-14 16:18:26,410 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 163 [2018-10-14 16:18:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:26,410 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-14 16:18:26,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:18:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-14 16:18:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-14 16:18:26,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:26,412 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:26,412 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:26,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:26,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2033432706, now seen corresponding path program 17 times [2018-10-14 16:18:26,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:26,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:26,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:18:26,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:18:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:18:26,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:18:26,768 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 21 states. [2018-10-14 16:18:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:27,219 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-14 16:18:27,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-14 16:18:27,219 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 166 [2018-10-14 16:18:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:27,220 INFO L225 Difference]: With dead ends: 172 [2018-10-14 16:18:27,220 INFO L226 Difference]: Without dead ends: 172 [2018-10-14 16:18:27,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=550, Invalid=856, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-14 16:18:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2018-10-14 16:18:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-14 16:18:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-14 16:18:27,225 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 166 [2018-10-14 16:18:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:27,225 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-14 16:18:27,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:18:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-14 16:18:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-14 16:18:27,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:27,226 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:27,226 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:27,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash 711502752, now seen corresponding path program 18 times [2018-10-14 16:18:27,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:27,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:27,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:18:27,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:18:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:18:27,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:27,513 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 22 states. [2018-10-14 16:18:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:28,073 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-14 16:18:28,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-14 16:18:28,073 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 169 [2018-10-14 16:18:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:28,074 INFO L225 Difference]: With dead ends: 175 [2018-10-14 16:18:28,074 INFO L226 Difference]: Without dead ends: 175 [2018-10-14 16:18:28,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:18:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-14 16:18:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2018-10-14 16:18:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-14 16:18:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-14 16:18:28,079 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 169 [2018-10-14 16:18:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:28,079 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-14 16:18:28,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:18:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-14 16:18:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-14 16:18:28,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:28,080 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:28,081 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:28,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:28,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1093583810, now seen corresponding path program 19 times [2018-10-14 16:18:28,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:29,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:29,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:18:29,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:18:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:18:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:18:29,037 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 23 states. [2018-10-14 16:18:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:30,506 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-14 16:18:30,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:18:30,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 172 [2018-10-14 16:18:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:30,508 INFO L225 Difference]: With dead ends: 178 [2018-10-14 16:18:30,508 INFO L226 Difference]: Without dead ends: 178 [2018-10-14 16:18:30,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=671, Invalid=1051, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:18:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-14 16:18:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2018-10-14 16:18:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-14 16:18:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-14 16:18:30,513 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 172 [2018-10-14 16:18:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:30,513 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-14 16:18:30,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:18:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-14 16:18:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-14 16:18:30,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:30,515 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:30,515 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:30,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 858160864, now seen corresponding path program 20 times [2018-10-14 16:18:30,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:32,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:32,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:18:32,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:18:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:18:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:32,603 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 24 states. [2018-10-14 16:18:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:33,275 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-14 16:18:33,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-14 16:18:33,276 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 175 [2018-10-14 16:18:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:33,277 INFO L225 Difference]: With dead ends: 181 [2018-10-14 16:18:33,277 INFO L226 Difference]: Without dead ends: 181 [2018-10-14 16:18:33,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=736, Invalid=1156, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:18:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-14 16:18:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2018-10-14 16:18:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-14 16:18:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-14 16:18:33,282 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 175 [2018-10-14 16:18:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:33,282 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-14 16:18:33,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:18:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-14 16:18:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-14 16:18:33,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:33,283 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:33,284 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:33,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash 16490750, now seen corresponding path program 21 times [2018-10-14 16:18:33,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:33,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:33,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-14 16:18:33,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-14 16:18:33,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-14 16:18:33,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:18:33,704 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 25 states. [2018-10-14 16:18:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:34,666 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-14 16:18:34,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:18:34,667 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2018-10-14 16:18:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:34,668 INFO L225 Difference]: With dead ends: 184 [2018-10-14 16:18:34,668 INFO L226 Difference]: Without dead ends: 184 [2018-10-14 16:18:34,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=804, Invalid=1266, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:18:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-14 16:18:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2018-10-14 16:18:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-14 16:18:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-14 16:18:34,673 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 178 [2018-10-14 16:18:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:34,673 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-14 16:18:34,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-14 16:18:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-14 16:18:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-14 16:18:34,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:34,675 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:34,675 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:34,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:34,675 INFO L82 PathProgramCache]: Analyzing trace with hash -158801376, now seen corresponding path program 22 times [2018-10-14 16:18:34,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:35,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:35,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 16:18:35,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 16:18:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 16:18:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:35,250 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 26 states. [2018-10-14 16:18:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:35,854 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-14 16:18:35,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:18:35,857 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 181 [2018-10-14 16:18:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:35,858 INFO L225 Difference]: With dead ends: 187 [2018-10-14 16:18:35,858 INFO L226 Difference]: Without dead ends: 187 [2018-10-14 16:18:35,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1381, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:18:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-14 16:18:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2018-10-14 16:18:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-14 16:18:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-14 16:18:35,863 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 181 [2018-10-14 16:18:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:35,863 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-14 16:18:35,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 16:18:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-14 16:18:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-14 16:18:35,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:35,865 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:35,865 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:35,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash 393704894, now seen corresponding path program 23 times [2018-10-14 16:18:35,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:36,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:36,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 16:18:36,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 16:18:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 16:18:36,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:18:36,541 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 27 states. [2018-10-14 16:18:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:37,200 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-14 16:18:37,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-14 16:18:37,201 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 184 [2018-10-14 16:18:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:37,202 INFO L225 Difference]: With dead ends: 190 [2018-10-14 16:18:37,202 INFO L226 Difference]: Without dead ends: 190 [2018-10-14 16:18:37,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=949, Invalid=1501, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:18:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-14 16:18:37,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2018-10-14 16:18:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-14 16:18:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-14 16:18:37,206 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 184 [2018-10-14 16:18:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:37,207 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-14 16:18:37,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 16:18:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-14 16:18:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-14 16:18:37,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:37,208 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:37,208 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:37,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1793316192, now seen corresponding path program 24 times [2018-10-14 16:18:37,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:38,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:38,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-14 16:18:38,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:18:38,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:18:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:38,153 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 28 states. [2018-10-14 16:18:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:38,791 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-14 16:18:38,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:18:38,791 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 187 [2018-10-14 16:18:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:38,792 INFO L225 Difference]: With dead ends: 193 [2018-10-14 16:18:38,792 INFO L226 Difference]: Without dead ends: 193 [2018-10-14 16:18:38,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1026, Invalid=1626, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:18:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-14 16:18:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2018-10-14 16:18:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-14 16:18:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-14 16:18:38,796 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 187 [2018-10-14 16:18:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:38,796 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-14 16:18:38,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:18:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-14 16:18:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-14 16:18:38,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:38,798 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:38,798 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:38,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2070985342, now seen corresponding path program 25 times [2018-10-14 16:18:38,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:39,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:39,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-14 16:18:39,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-14 16:18:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-14 16:18:39,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2018-10-14 16:18:39,333 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 29 states. [2018-10-14 16:18:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:40,178 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-14 16:18:40,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:18:40,178 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-10-14 16:18:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:40,179 INFO L225 Difference]: With dead ends: 196 [2018-10-14 16:18:40,179 INFO L226 Difference]: Without dead ends: 196 [2018-10-14 16:18:40,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1106, Invalid=1756, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:18:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-14 16:18:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2018-10-14 16:18:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-14 16:18:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-14 16:18:40,184 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 190 [2018-10-14 16:18:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:40,184 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-14 16:18:40,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-14 16:18:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-14 16:18:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-14 16:18:40,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:40,186 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:40,186 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:40,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2005620896, now seen corresponding path program 26 times [2018-10-14 16:18:40,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:41,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:41,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-14 16:18:41,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-14 16:18:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-14 16:18:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:18:41,287 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 30 states. [2018-10-14 16:18:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:41,950 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-14 16:18:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-14 16:18:41,950 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2018-10-14 16:18:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:41,951 INFO L225 Difference]: With dead ends: 199 [2018-10-14 16:18:41,952 INFO L226 Difference]: Without dead ends: 199 [2018-10-14 16:18:41,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1189, Invalid=1891, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:18:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-14 16:18:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2018-10-14 16:18:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-14 16:18:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-14 16:18:41,956 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 193 [2018-10-14 16:18:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:41,957 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-14 16:18:41,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-14 16:18:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-14 16:18:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-14 16:18:41,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:41,958 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:41,958 INFO L424 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:41,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash 353595198, now seen corresponding path program 27 times [2018-10-14 16:18:41,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:43,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:43,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:18:43,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:18:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:18:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:18:43,643 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 31 states. [2018-10-14 16:18:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:44,411 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-14 16:18:44,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-14 16:18:44,414 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2018-10-14 16:18:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:44,415 INFO L225 Difference]: With dead ends: 202 [2018-10-14 16:18:44,415 INFO L226 Difference]: Without dead ends: 202 [2018-10-14 16:18:44,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1275, Invalid=2031, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:18:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-14 16:18:44,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2018-10-14 16:18:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-14 16:18:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-14 16:18:44,420 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 196 [2018-10-14 16:18:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:44,420 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-14 16:18:44,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:18:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-14 16:18:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-14 16:18:44,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:44,421 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:44,422 INFO L424 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:44,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash 886270944, now seen corresponding path program 28 times [2018-10-14 16:18:44,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:45,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:45,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:18:45,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:18:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:18:45,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:45,489 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 32 states. [2018-10-14 16:18:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:46,489 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-14 16:18:46,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-14 16:18:46,489 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 199 [2018-10-14 16:18:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:46,490 INFO L225 Difference]: With dead ends: 205 [2018-10-14 16:18:46,490 INFO L226 Difference]: Without dead ends: 205 [2018-10-14 16:18:46,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1364, Invalid=2176, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:18:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-14 16:18:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2018-10-14 16:18:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-14 16:18:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-14 16:18:46,494 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 199 [2018-10-14 16:18:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:46,494 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-14 16:18:46,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:18:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-14 16:18:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-14 16:18:46,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:46,495 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:46,495 INFO L424 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:46,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:46,496 INFO L82 PathProgramCache]: Analyzing trace with hash -74738690, now seen corresponding path program 29 times [2018-10-14 16:18:46,496 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:47,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:47,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:18:47,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:18:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:18:47,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:18:47,077 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 33 states. [2018-10-14 16:18:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:47,928 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-14 16:18:47,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-14 16:18:47,929 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 202 [2018-10-14 16:18:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:47,930 INFO L225 Difference]: With dead ends: 208 [2018-10-14 16:18:47,930 INFO L226 Difference]: Without dead ends: 208 [2018-10-14 16:18:47,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1456, Invalid=2326, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:18:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-14 16:18:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2018-10-14 16:18:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-14 16:18:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-14 16:18:47,934 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 202 [2018-10-14 16:18:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:47,934 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-14 16:18:47,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:18:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-14 16:18:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-14 16:18:47,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:47,935 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:47,936 INFO L424 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:47,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:47,936 INFO L82 PathProgramCache]: Analyzing trace with hash 739249952, now seen corresponding path program 30 times [2018-10-14 16:18:47,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:48,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:48,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 16:18:48,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 16:18:48,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 16:18:48,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:48,894 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 34 states. [2018-10-14 16:18:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:50,172 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-14 16:18:50,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:18:50,172 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 205 [2018-10-14 16:18:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:50,173 INFO L225 Difference]: With dead ends: 211 [2018-10-14 16:18:50,173 INFO L226 Difference]: Without dead ends: 211 [2018-10-14 16:18:50,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1551, Invalid=2481, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:18:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-14 16:18:50,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2018-10-14 16:18:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-14 16:18:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-14 16:18:50,177 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 205 [2018-10-14 16:18:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:50,178 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-14 16:18:50,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 16:18:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-14 16:18:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-14 16:18:50,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:50,179 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:50,179 INFO L424 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:50,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash 889530558, now seen corresponding path program 31 times [2018-10-14 16:18:50,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:50,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:50,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-14 16:18:50,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-14 16:18:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-14 16:18:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2018-10-14 16:18:50,883 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 35 states. [2018-10-14 16:18:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:51,730 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-14 16:18:51,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 16:18:51,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 208 [2018-10-14 16:18:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:51,731 INFO L225 Difference]: With dead ends: 214 [2018-10-14 16:18:51,731 INFO L226 Difference]: Without dead ends: 214 [2018-10-14 16:18:51,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1649, Invalid=2641, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:18:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-14 16:18:51,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2018-10-14 16:18:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-14 16:18:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-14 16:18:51,737 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 208 [2018-10-14 16:18:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:51,737 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-14 16:18:51,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-14 16:18:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-14 16:18:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-14 16:18:51,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:51,739 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:51,739 INFO L424 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:51,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1751825824, now seen corresponding path program 32 times [2018-10-14 16:18:51,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:52,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:52,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:18:52,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:18:52,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:18:52,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:52,467 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 36 states. [2018-10-14 16:18:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:53,418 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-14 16:18:53,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-14 16:18:53,419 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 211 [2018-10-14 16:18:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:53,420 INFO L225 Difference]: With dead ends: 217 [2018-10-14 16:18:53,420 INFO L226 Difference]: Without dead ends: 217 [2018-10-14 16:18:53,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1750, Invalid=2806, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:18:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-14 16:18:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2018-10-14 16:18:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-14 16:18:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-14 16:18:53,425 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 211 [2018-10-14 16:18:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:53,425 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-14 16:18:53,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:18:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-14 16:18:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-14 16:18:53,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:53,427 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:53,427 INFO L424 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:53,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1990995326, now seen corresponding path program 33 times [2018-10-14 16:18:53,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:54,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:54,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-14 16:18:54,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-14 16:18:54,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-14 16:18:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2018-10-14 16:18:54,257 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 37 states. [2018-10-14 16:18:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:55,571 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-14 16:18:55,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-14 16:18:55,571 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 214 [2018-10-14 16:18:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:55,572 INFO L225 Difference]: With dead ends: 220 [2018-10-14 16:18:55,573 INFO L226 Difference]: Without dead ends: 220 [2018-10-14 16:18:55,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1854, Invalid=2976, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:18:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-14 16:18:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2018-10-14 16:18:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-14 16:18:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-14 16:18:55,577 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 214 [2018-10-14 16:18:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:55,577 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-14 16:18:55,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-14 16:18:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-14 16:18:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-14 16:18:55,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:55,579 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:55,579 INFO L424 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:55,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1565063776, now seen corresponding path program 34 times [2018-10-14 16:18:55,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:56,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:56,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-14 16:18:56,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-14 16:18:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-14 16:18:56,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=737, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:56,347 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 38 states. [2018-10-14 16:18:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:57,411 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-14 16:18:57,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-14 16:18:57,411 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 217 [2018-10-14 16:18:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:57,412 INFO L225 Difference]: With dead ends: 223 [2018-10-14 16:18:57,412 INFO L226 Difference]: Without dead ends: 223 [2018-10-14 16:18:57,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1961, Invalid=3151, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:18:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-14 16:18:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2018-10-14 16:18:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-14 16:18:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-14 16:18:57,416 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 217 [2018-10-14 16:18:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:57,417 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-14 16:18:57,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-14 16:18:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-14 16:18:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-14 16:18:57,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:57,418 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:57,418 INFO L424 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:57,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:57,419 INFO L82 PathProgramCache]: Analyzing trace with hash -458448322, now seen corresponding path program 35 times [2018-10-14 16:18:57,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:18:58,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:58,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:18:58,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:18:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:18:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=776, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:18:58,316 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 39 states. [2018-10-14 16:18:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:59,491 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-14 16:18:59,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:18:59,492 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 220 [2018-10-14 16:18:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:59,493 INFO L225 Difference]: With dead ends: 226 [2018-10-14 16:18:59,493 INFO L226 Difference]: Without dead ends: 226 [2018-10-14 16:18:59,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2071, Invalid=3331, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:18:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-14 16:18:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2018-10-14 16:18:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-14 16:18:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-14 16:18:59,497 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 220 [2018-10-14 16:18:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:59,497 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-14 16:18:59,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:18:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-14 16:18:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-14 16:18:59,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:59,499 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:59,499 INFO L424 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:59,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1446422304, now seen corresponding path program 36 times [2018-10-14 16:18:59,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:00,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:00,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-14 16:19:00,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-14 16:19:00,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-14 16:19:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:19:00,700 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 40 states. [2018-10-14 16:19:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:02,204 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-14 16:19:02,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-14 16:19:02,205 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 223 [2018-10-14 16:19:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:02,206 INFO L225 Difference]: With dead ends: 229 [2018-10-14 16:19:02,206 INFO L226 Difference]: Without dead ends: 229 [2018-10-14 16:19:02,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2184, Invalid=3516, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:19:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-14 16:19:02,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2018-10-14 16:19:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-14 16:19:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-14 16:19:02,210 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 223 [2018-10-14 16:19:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:02,210 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-14 16:19:02,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-14 16:19:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-14 16:19:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-14 16:19:02,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:02,215 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:02,215 INFO L424 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:02,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -768440578, now seen corresponding path program 37 times [2018-10-14 16:19:02,216 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:03,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:03,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:19:03,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:19:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:19:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=857, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:19:03,560 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 41 states. [2018-10-14 16:19:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:04,733 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-14 16:19:04,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:19:04,733 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 226 [2018-10-14 16:19:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:04,734 INFO L225 Difference]: With dead ends: 232 [2018-10-14 16:19:04,734 INFO L226 Difference]: Without dead ends: 232 [2018-10-14 16:19:04,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2300, Invalid=3706, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:19:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-14 16:19:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2018-10-14 16:19:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-14 16:19:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-14 16:19:04,738 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 226 [2018-10-14 16:19:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:04,739 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-14 16:19:04,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:19:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-14 16:19:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-14 16:19:04,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:04,740 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:04,740 INFO L424 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:04,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2048932896, now seen corresponding path program 38 times [2018-10-14 16:19:04,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:05,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:05,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-14 16:19:05,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-14 16:19:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-14 16:19:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=899, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:19:05,859 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 42 states. [2018-10-14 16:19:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:07,085 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-14 16:19:07,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-14 16:19:07,085 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 229 [2018-10-14 16:19:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:07,086 INFO L225 Difference]: With dead ends: 235 [2018-10-14 16:19:07,086 INFO L226 Difference]: Without dead ends: 235 [2018-10-14 16:19:07,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2419, Invalid=3901, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:19:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-14 16:19:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2018-10-14 16:19:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-14 16:19:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-14 16:19:07,090 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 229 [2018-10-14 16:19:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:07,091 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-14 16:19:07,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-14 16:19:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-14 16:19:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-14 16:19:07,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:07,092 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:07,092 INFO L424 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:07,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2123768898, now seen corresponding path program 39 times [2018-10-14 16:19:07,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:08,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:08,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:19:08,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:19:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:19:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=942, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:19:08,159 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 43 states. [2018-10-14 16:19:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:09,749 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-14 16:19:09,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-14 16:19:09,749 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 232 [2018-10-14 16:19:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:09,750 INFO L225 Difference]: With dead ends: 238 [2018-10-14 16:19:09,750 INFO L226 Difference]: Without dead ends: 238 [2018-10-14 16:19:09,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2541, Invalid=4101, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:19:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-14 16:19:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2018-10-14 16:19:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-14 16:19:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-14 16:19:09,755 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 232 [2018-10-14 16:19:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:09,755 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-14 16:19:09,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:19:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-14 16:19:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 16:19:09,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:09,757 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:09,757 INFO L424 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:09,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1844465824, now seen corresponding path program 40 times [2018-10-14 16:19:09,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:10,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:10,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:19:10,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:19:10,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:19:10,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=986, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:19:10,976 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 44 states. [2018-10-14 16:19:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:12,374 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-14 16:19:12,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:19:12,374 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 235 [2018-10-14 16:19:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:12,375 INFO L225 Difference]: With dead ends: 241 [2018-10-14 16:19:12,375 INFO L226 Difference]: Without dead ends: 241 [2018-10-14 16:19:12,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2666, Invalid=4306, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:19:12,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-14 16:19:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2018-10-14 16:19:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-14 16:19:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-14 16:19:12,378 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 235 [2018-10-14 16:19:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:12,378 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-14 16:19:12,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:19:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-14 16:19:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-14 16:19:12,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:12,380 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:12,380 INFO L424 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:12,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash -478240642, now seen corresponding path program 41 times [2018-10-14 16:19:12,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:13,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:13,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-14 16:19:13,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-14 16:19:13,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-14 16:19:13,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=1031, Unknown=0, NotChecked=0, Total=1980 [2018-10-14 16:19:13,636 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 45 states. [2018-10-14 16:19:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:15,192 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-14 16:19:15,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-14 16:19:15,193 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 238 [2018-10-14 16:19:15,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:15,193 INFO L225 Difference]: With dead ends: 244 [2018-10-14 16:19:15,194 INFO L226 Difference]: Without dead ends: 244 [2018-10-14 16:19:15,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2794, Invalid=4516, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:19:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-14 16:19:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2018-10-14 16:19:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-14 16:19:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-14 16:19:15,197 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 238 [2018-10-14 16:19:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:15,198 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-14 16:19:15,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-14 16:19:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-14 16:19:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-14 16:19:15,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:15,199 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:15,200 INFO L424 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:15,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:15,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1626059424, now seen corresponding path program 42 times [2018-10-14 16:19:15,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:16,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:16,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-14 16:19:16,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-14 16:19:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-14 16:19:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=1077, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:19:16,441 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 46 states. [2018-10-14 16:19:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:17,946 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-14 16:19:17,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:19:17,947 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 241 [2018-10-14 16:19:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:17,948 INFO L225 Difference]: With dead ends: 247 [2018-10-14 16:19:17,948 INFO L226 Difference]: Without dead ends: 247 [2018-10-14 16:19:17,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2925, Invalid=4731, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:19:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-14 16:19:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2018-10-14 16:19:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-14 16:19:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-14 16:19:17,952 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 241 [2018-10-14 16:19:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:17,952 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-14 16:19:17,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-14 16:19:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-14 16:19:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-14 16:19:17,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:17,954 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:17,954 INFO L424 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:17,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:17,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1486673214, now seen corresponding path program 43 times [2018-10-14 16:19:17,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:19,197 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:19,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:19:19,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:19:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:19:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=1124, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:19:19,198 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 47 states. [2018-10-14 16:19:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:20,878 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-14 16:19:20,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-14 16:19:20,879 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 244 [2018-10-14 16:19:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:20,880 INFO L225 Difference]: With dead ends: 250 [2018-10-14 16:19:20,880 INFO L226 Difference]: Without dead ends: 250 [2018-10-14 16:19:20,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3059, Invalid=4951, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:19:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-14 16:19:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2018-10-14 16:19:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-14 16:19:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-14 16:19:20,883 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 244 [2018-10-14 16:19:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:20,883 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-14 16:19:20,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:19:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-14 16:19:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-14 16:19:20,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:20,885 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:20,885 INFO L424 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:20,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2029500960, now seen corresponding path program 44 times [2018-10-14 16:19:20,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:22,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:22,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-14 16:19:22,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-14 16:19:22,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-14 16:19:22,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=1172, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:19:22,033 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 48 states. [2018-10-14 16:19:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:23,598 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-14 16:19:23,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-14 16:19:23,599 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 247 [2018-10-14 16:19:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:23,600 INFO L225 Difference]: With dead ends: 253 [2018-10-14 16:19:23,600 INFO L226 Difference]: Without dead ends: 253 [2018-10-14 16:19:23,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3196, Invalid=5176, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:19:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-14 16:19:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2018-10-14 16:19:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-14 16:19:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-14 16:19:23,603 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 247 [2018-10-14 16:19:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:23,603 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-14 16:19:23,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-14 16:19:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-14 16:19:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-14 16:19:23,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:23,604 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:23,604 INFO L424 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:23,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1878030846, now seen corresponding path program 45 times [2018-10-14 16:19:23,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:24,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:24,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-14 16:19:24,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-14 16:19:24,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-14 16:19:24,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=1221, Unknown=0, NotChecked=0, Total=2352 [2018-10-14 16:19:24,718 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 49 states. [2018-10-14 16:19:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:26,604 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-14 16:19:26,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-14 16:19:26,611 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 250 [2018-10-14 16:19:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:26,612 INFO L225 Difference]: With dead ends: 256 [2018-10-14 16:19:26,612 INFO L226 Difference]: Without dead ends: 256 [2018-10-14 16:19:26,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3336, Invalid=5406, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:19:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-14 16:19:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2018-10-14 16:19:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-14 16:19:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-14 16:19:26,616 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 250 [2018-10-14 16:19:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:26,617 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-14 16:19:26,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-14 16:19:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-14 16:19:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-14 16:19:26,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:26,618 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:26,619 INFO L424 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:26,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:26,619 INFO L82 PathProgramCache]: Analyzing trace with hash 364472608, now seen corresponding path program 46 times [2018-10-14 16:19:26,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:27,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:27,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-14 16:19:27,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-14 16:19:27,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-14 16:19:27,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:19:27,854 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 50 states. [2018-10-14 16:19:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:29,587 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-14 16:19:29,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-14 16:19:29,587 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 253 [2018-10-14 16:19:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:29,588 INFO L225 Difference]: With dead ends: 259 [2018-10-14 16:19:29,588 INFO L226 Difference]: Without dead ends: 259 [2018-10-14 16:19:29,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3479, Invalid=5641, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:19:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-14 16:19:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2018-10-14 16:19:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-14 16:19:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-14 16:19:29,592 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 253 [2018-10-14 16:19:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:29,593 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-14 16:19:29,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-14 16:19:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-14 16:19:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-14 16:19:29,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:29,595 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:29,595 INFO L424 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:29,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:29,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1482322242, now seen corresponding path program 47 times [2018-10-14 16:19:29,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:31,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:31,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-14 16:19:31,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-14 16:19:31,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-14 16:19:31,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=1322, Unknown=0, NotChecked=0, Total=2550 [2018-10-14 16:19:31,101 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 51 states. [2018-10-14 16:19:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:32,960 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-10-14 16:19:32,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 16:19:32,961 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 256 [2018-10-14 16:19:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:32,962 INFO L225 Difference]: With dead ends: 262 [2018-10-14 16:19:32,962 INFO L226 Difference]: Without dead ends: 262 [2018-10-14 16:19:32,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3625, Invalid=5881, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:19:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-14 16:19:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2018-10-14 16:19:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-14 16:19:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-14 16:19:32,967 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 256 [2018-10-14 16:19:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:32,967 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-14 16:19:32,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-14 16:19:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-14 16:19:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-14 16:19:32,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:32,969 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:32,969 INFO L424 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:32,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -816636832, now seen corresponding path program 48 times [2018-10-14 16:19:32,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:34,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:34,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:19:34,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:19:34,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:19:34,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=1374, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:19:34,261 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 52 states. [2018-10-14 16:19:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:36,295 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-14 16:19:36,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-14 16:19:36,296 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 259 [2018-10-14 16:19:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:36,297 INFO L225 Difference]: With dead ends: 265 [2018-10-14 16:19:36,297 INFO L226 Difference]: Without dead ends: 265 [2018-10-14 16:19:36,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3774, Invalid=6126, Unknown=0, NotChecked=0, Total=9900 [2018-10-14 16:19:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-14 16:19:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2018-10-14 16:19:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-14 16:19:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-14 16:19:36,301 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 259 [2018-10-14 16:19:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:36,301 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-14 16:19:36,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:19:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-14 16:19:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-14 16:19:36,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:36,303 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:36,303 INFO L424 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:36,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash 753406846, now seen corresponding path program 49 times [2018-10-14 16:19:36,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:37,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:37,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-14 16:19:37,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-14 16:19:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-14 16:19:37,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=1427, Unknown=0, NotChecked=0, Total=2756 [2018-10-14 16:19:37,740 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 53 states. [2018-10-14 16:19:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:39,683 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2018-10-14 16:19:39,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:19:39,684 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 262 [2018-10-14 16:19:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:39,685 INFO L225 Difference]: With dead ends: 268 [2018-10-14 16:19:39,685 INFO L226 Difference]: Without dead ends: 268 [2018-10-14 16:19:39,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3926, Invalid=6376, Unknown=0, NotChecked=0, Total=10302 [2018-10-14 16:19:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-14 16:19:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2018-10-14 16:19:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-14 16:19:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-10-14 16:19:39,694 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 262 [2018-10-14 16:19:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:39,695 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-10-14 16:19:39,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-14 16:19:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-10-14 16:19:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-14 16:19:39,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:39,696 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:39,697 INFO L424 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:39,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1730764704, now seen corresponding path program 50 times [2018-10-14 16:19:39,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:41,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:41,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-14 16:19:41,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-14 16:19:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-14 16:19:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:19:41,399 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 54 states. [2018-10-14 16:19:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:43,373 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-10-14 16:19:43,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-14 16:19:43,373 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 265 [2018-10-14 16:19:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:43,374 INFO L225 Difference]: With dead ends: 271 [2018-10-14 16:19:43,374 INFO L226 Difference]: Without dead ends: 271 [2018-10-14 16:19:43,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4081, Invalid=6631, Unknown=0, NotChecked=0, Total=10712 [2018-10-14 16:19:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-14 16:19:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2018-10-14 16:19:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-14 16:19:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-10-14 16:19:43,378 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 265 [2018-10-14 16:19:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:43,379 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-10-14 16:19:43,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-14 16:19:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-10-14 16:19:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-14 16:19:43,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:43,380 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:43,381 INFO L424 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:43,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1679554498, now seen corresponding path program 51 times [2018-10-14 16:19:43,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:44,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:44,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-14 16:19:44,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-14 16:19:44,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-14 16:19:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1434, Invalid=1536, Unknown=0, NotChecked=0, Total=2970 [2018-10-14 16:19:44,825 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 55 states. [2018-10-14 16:19:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:47,075 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2018-10-14 16:19:47,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:19:47,076 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 268 [2018-10-14 16:19:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:47,077 INFO L225 Difference]: With dead ends: 274 [2018-10-14 16:19:47,077 INFO L226 Difference]: Without dead ends: 274 [2018-10-14 16:19:47,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4239, Invalid=6891, Unknown=0, NotChecked=0, Total=11130 [2018-10-14 16:19:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-14 16:19:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2018-10-14 16:19:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-10-14 16:19:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-10-14 16:19:47,080 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 268 [2018-10-14 16:19:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:47,080 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-10-14 16:19:47,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-14 16:19:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-10-14 16:19:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-14 16:19:47,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:47,082 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:47,082 INFO L424 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:47,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:47,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1047514400, now seen corresponding path program 52 times [2018-10-14 16:19:47,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:48,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:48,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:19:48,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:19:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:19:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=1592, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:19:48,566 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 56 states. [2018-10-14 16:19:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:50,672 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-14 16:19:50,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:19:50,672 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 271 [2018-10-14 16:19:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:50,674 INFO L225 Difference]: With dead ends: 277 [2018-10-14 16:19:50,674 INFO L226 Difference]: Without dead ends: 277 [2018-10-14 16:19:50,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4400, Invalid=7156, Unknown=0, NotChecked=0, Total=11556 [2018-10-14 16:19:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-10-14 16:19:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2018-10-14 16:19:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-14 16:19:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-14 16:19:50,679 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 271 [2018-10-14 16:19:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:50,679 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-14 16:19:50,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:19:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-14 16:19:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-14 16:19:50,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:50,681 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:50,681 INFO L424 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:50,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1077580546, now seen corresponding path program 53 times [2018-10-14 16:19:50,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:52,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:52,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:19:52,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:19:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:19:52,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=1649, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:19:52,538 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 57 states. [2018-10-14 16:19:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:54,694 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2018-10-14 16:19:54,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 16:19:54,695 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 274 [2018-10-14 16:19:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:54,696 INFO L225 Difference]: With dead ends: 280 [2018-10-14 16:19:54,696 INFO L226 Difference]: Without dead ends: 280 [2018-10-14 16:19:54,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4564, Invalid=7426, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 16:19:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-14 16:19:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2018-10-14 16:19:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-14 16:19:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-10-14 16:19:54,699 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 274 [2018-10-14 16:19:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:54,700 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-10-14 16:19:54,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:19:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-10-14 16:19:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-14 16:19:54,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:54,701 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:54,702 INFO L424 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:54,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 870028832, now seen corresponding path program 54 times [2018-10-14 16:19:54,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:19:56,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:56,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-14 16:19:56,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-14 16:19:56,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-14 16:19:56,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=1707, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:19:56,345 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 58 states. [2018-10-14 16:19:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:58,617 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-10-14 16:19:58,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-14 16:19:58,618 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 277 [2018-10-14 16:19:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:58,619 INFO L225 Difference]: With dead ends: 283 [2018-10-14 16:19:58,619 INFO L226 Difference]: Without dead ends: 283 [2018-10-14 16:19:58,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4731, Invalid=7701, Unknown=0, NotChecked=0, Total=12432 [2018-10-14 16:19:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-14 16:19:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2018-10-14 16:19:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-14 16:19:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-10-14 16:19:58,623 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 277 [2018-10-14 16:19:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:58,624 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-10-14 16:19:58,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-14 16:19:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-10-14 16:19:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-14 16:19:58,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:58,625 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:58,626 INFO L424 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:58,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1387807166, now seen corresponding path program 55 times [2018-10-14 16:19:58,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:00,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:00,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-14 16:20:00,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-14 16:20:00,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-14 16:20:00,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=1766, Unknown=0, NotChecked=0, Total=3422 [2018-10-14 16:20:00,176 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 59 states. [2018-10-14 16:20:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:02,637 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2018-10-14 16:20:02,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:20:02,637 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 280 [2018-10-14 16:20:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:02,638 INFO L225 Difference]: With dead ends: 286 [2018-10-14 16:20:02,638 INFO L226 Difference]: Without dead ends: 286 [2018-10-14 16:20:02,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4901, Invalid=7981, Unknown=0, NotChecked=0, Total=12882 [2018-10-14 16:20:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-14 16:20:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2018-10-14 16:20:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-14 16:20:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-10-14 16:20:02,642 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 280 [2018-10-14 16:20:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:02,642 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-10-14 16:20:02,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-14 16:20:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-10-14 16:20:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-14 16:20:02,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:02,644 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:02,644 INFO L424 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:02,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1000371872, now seen corresponding path program 56 times [2018-10-14 16:20:02,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:04,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:04,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-14 16:20:04,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-14 16:20:04,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-14 16:20:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1714, Invalid=1826, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:20:04,250 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 60 states. [2018-10-14 16:20:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:06,951 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-14 16:20:06,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-14 16:20:06,951 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 283 [2018-10-14 16:20:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:06,952 INFO L225 Difference]: With dead ends: 289 [2018-10-14 16:20:06,952 INFO L226 Difference]: Without dead ends: 289 [2018-10-14 16:20:06,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5074, Invalid=8266, Unknown=0, NotChecked=0, Total=13340 [2018-10-14 16:20:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-14 16:20:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2018-10-14 16:20:06,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-14 16:20:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-14 16:20:06,956 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 283 [2018-10-14 16:20:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:06,957 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-14 16:20:06,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-14 16:20:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-14 16:20:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-14 16:20:06,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:06,958 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:06,958 INFO L424 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:06,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:06,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1108834690, now seen corresponding path program 57 times [2018-10-14 16:20:06,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:08,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:08,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-14 16:20:08,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-14 16:20:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-14 16:20:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=1887, Unknown=0, NotChecked=0, Total=3660 [2018-10-14 16:20:08,552 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 61 states. [2018-10-14 16:20:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:10,924 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-14 16:20:10,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:20:10,924 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 286 [2018-10-14 16:20:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:10,925 INFO L225 Difference]: With dead ends: 292 [2018-10-14 16:20:10,925 INFO L226 Difference]: Without dead ends: 292 [2018-10-14 16:20:10,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5250, Invalid=8556, Unknown=0, NotChecked=0, Total=13806 [2018-10-14 16:20:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-14 16:20:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2018-10-14 16:20:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-10-14 16:20:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-10-14 16:20:10,928 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 286 [2018-10-14 16:20:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:10,929 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-10-14 16:20:10,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-14 16:20:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-10-14 16:20:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-14 16:20:10,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:10,930 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:10,930 INFO L424 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:10,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1785728160, now seen corresponding path program 58 times [2018-10-14 16:20:10,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:12,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:12,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:20:12,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:20:12,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:20:12,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1833, Invalid=1949, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:20:12,885 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 62 states. [2018-10-14 16:20:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:15,450 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-10-14 16:20:15,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-14 16:20:15,450 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 289 [2018-10-14 16:20:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:15,451 INFO L225 Difference]: With dead ends: 295 [2018-10-14 16:20:15,451 INFO L226 Difference]: Without dead ends: 295 [2018-10-14 16:20:15,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5429, Invalid=8851, Unknown=0, NotChecked=0, Total=14280 [2018-10-14 16:20:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-14 16:20:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2018-10-14 16:20:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-10-14 16:20:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-10-14 16:20:15,454 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 289 [2018-10-14 16:20:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:15,454 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-10-14 16:20:15,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:20:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-10-14 16:20:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-14 16:20:15,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:15,456 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:15,456 INFO L424 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:15,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash -645776578, now seen corresponding path program 59 times [2018-10-14 16:20:15,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:17,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:17,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 16:20:17,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 16:20:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 16:20:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2012, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:20:17,279 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 63 states. [2018-10-14 16:20:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:19,783 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions. [2018-10-14 16:20:19,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-14 16:20:19,783 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 292 [2018-10-14 16:20:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:19,784 INFO L225 Difference]: With dead ends: 298 [2018-10-14 16:20:19,784 INFO L226 Difference]: Without dead ends: 298 [2018-10-14 16:20:19,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5611, Invalid=9151, Unknown=0, NotChecked=0, Total=14762 [2018-10-14 16:20:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-14 16:20:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2018-10-14 16:20:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-14 16:20:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-10-14 16:20:19,788 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 292 [2018-10-14 16:20:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:19,788 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-10-14 16:20:19,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 16:20:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-10-14 16:20:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-14 16:20:19,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:19,790 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:19,790 INFO L424 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:19,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:19,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1314988000, now seen corresponding path program 60 times [2018-10-14 16:20:19,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:21,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:21,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-14 16:20:21,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-14 16:20:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-14 16:20:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1956, Invalid=2076, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:20:21,567 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 64 states. [2018-10-14 16:20:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:24,371 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-14 16:20:24,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-14 16:20:24,371 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 295 [2018-10-14 16:20:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:24,372 INFO L225 Difference]: With dead ends: 301 [2018-10-14 16:20:24,372 INFO L226 Difference]: Without dead ends: 301 [2018-10-14 16:20:24,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5796, Invalid=9456, Unknown=0, NotChecked=0, Total=15252 [2018-10-14 16:20:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-10-14 16:20:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2018-10-14 16:20:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-14 16:20:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-14 16:20:24,377 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 295 [2018-10-14 16:20:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:24,377 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-14 16:20:24,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-14 16:20:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-14 16:20:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-14 16:20:24,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:24,379 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:24,379 INFO L424 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:24,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1397661698, now seen corresponding path program 61 times [2018-10-14 16:20:24,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 5551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:26,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:26,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-14 16:20:26,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-14 16:20:26,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-14 16:20:26,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2019, Invalid=2141, Unknown=0, NotChecked=0, Total=4160 [2018-10-14 16:20:26,195 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 65 states. [2018-10-14 16:20:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:29,066 INFO L93 Difference]: Finished difference Result 304 states and 304 transitions. [2018-10-14 16:20:29,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-14 16:20:29,067 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 298 [2018-10-14 16:20:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:29,068 INFO L225 Difference]: With dead ends: 304 [2018-10-14 16:20:29,068 INFO L226 Difference]: Without dead ends: 304 [2018-10-14 16:20:29,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5984, Invalid=9766, Unknown=0, NotChecked=0, Total=15750 [2018-10-14 16:20:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-10-14 16:20:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2018-10-14 16:20:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-10-14 16:20:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-10-14 16:20:29,072 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 298 [2018-10-14 16:20:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:29,072 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-10-14 16:20:29,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-14 16:20:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-10-14 16:20:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-14 16:20:29,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:29,073 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:29,073 INFO L424 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:29,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash 159826720, now seen corresponding path program 62 times [2018-10-14 16:20:29,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:30,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:30,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-14 16:20:30,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-14 16:20:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-14 16:20:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:20:30,938 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 66 states. [2018-10-14 16:20:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:34,037 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-10-14 16:20:34,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:20:34,037 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 301 [2018-10-14 16:20:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:34,038 INFO L225 Difference]: With dead ends: 307 [2018-10-14 16:20:34,038 INFO L226 Difference]: Without dead ends: 307 [2018-10-14 16:20:34,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6175, Invalid=10081, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:20:34,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-14 16:20:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2018-10-14 16:20:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-10-14 16:20:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-10-14 16:20:34,042 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 301 [2018-10-14 16:20:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:34,042 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-10-14 16:20:34,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-14 16:20:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-10-14 16:20:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-14 16:20:34,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:34,044 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:34,044 INFO L424 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:34,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash 765588670, now seen corresponding path program 63 times [2018-10-14 16:20:34,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:36,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:36,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:20:36,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:20:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:20:36,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=2274, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:20:36,008 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 67 states. [2018-10-14 16:20:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:39,141 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2018-10-14 16:20:39,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-14 16:20:39,142 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 304 [2018-10-14 16:20:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:39,143 INFO L225 Difference]: With dead ends: 310 [2018-10-14 16:20:39,143 INFO L226 Difference]: Without dead ends: 310 [2018-10-14 16:20:39,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6369, Invalid=10401, Unknown=0, NotChecked=0, Total=16770 [2018-10-14 16:20:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-10-14 16:20:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2018-10-14 16:20:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-14 16:20:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-10-14 16:20:39,146 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 304 [2018-10-14 16:20:39,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:39,147 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-10-14 16:20:39,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:20:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-10-14 16:20:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-14 16:20:39,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:39,148 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:39,148 INFO L424 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:39,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash -432736672, now seen corresponding path program 64 times [2018-10-14 16:20:39,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 0 proven. 6112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:41,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:41,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-14 16:20:41,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-14 16:20:41,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-14 16:20:41,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=2342, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:20:41,125 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 68 states. [2018-10-14 16:20:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:44,230 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-14 16:20:44,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-14 16:20:44,230 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 307 [2018-10-14 16:20:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:44,232 INFO L225 Difference]: With dead ends: 313 [2018-10-14 16:20:44,232 INFO L226 Difference]: Without dead ends: 313 [2018-10-14 16:20:44,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6566, Invalid=10726, Unknown=0, NotChecked=0, Total=17292 [2018-10-14 16:20:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-14 16:20:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2018-10-14 16:20:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-14 16:20:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-14 16:20:44,235 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 307 [2018-10-14 16:20:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:44,235 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-14 16:20:44,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-14 16:20:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-14 16:20:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-14 16:20:44,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:44,237 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:44,237 INFO L424 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:44,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash 25164158, now seen corresponding path program 65 times [2018-10-14 16:20:44,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:46,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:46,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-14 16:20:46,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-14 16:20:46,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-14 16:20:46,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=2411, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:20:46,284 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 69 states. [2018-10-14 16:20:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:49,563 INFO L93 Difference]: Finished difference Result 316 states and 316 transitions. [2018-10-14 16:20:49,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-14 16:20:49,563 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 310 [2018-10-14 16:20:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:49,564 INFO L225 Difference]: With dead ends: 316 [2018-10-14 16:20:49,564 INFO L226 Difference]: Without dead ends: 316 [2018-10-14 16:20:49,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6766, Invalid=11056, Unknown=0, NotChecked=0, Total=17822 [2018-10-14 16:20:49,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-10-14 16:20:49,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 314. [2018-10-14 16:20:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-14 16:20:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-10-14 16:20:49,568 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 310 [2018-10-14 16:20:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:49,568 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-10-14 16:20:49,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-14 16:20:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-10-14 16:20:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-14 16:20:49,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:49,570 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:49,570 INFO L424 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:49,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash 532658592, now seen corresponding path program 66 times [2018-10-14 16:20:49,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:51,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:51,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-14 16:20:51,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-14 16:20:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-14 16:20:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=2481, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:20:51,697 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 70 states. [2018-10-14 16:20:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:54,904 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-10-14 16:20:54,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 16:20:54,904 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 313 [2018-10-14 16:20:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:54,905 INFO L225 Difference]: With dead ends: 319 [2018-10-14 16:20:54,905 INFO L226 Difference]: Without dead ends: 319 [2018-10-14 16:20:54,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6969, Invalid=11391, Unknown=0, NotChecked=0, Total=18360 [2018-10-14 16:20:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-14 16:20:54,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2018-10-14 16:20:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-14 16:20:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-14 16:20:54,909 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 313 [2018-10-14 16:20:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:54,909 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-14 16:20:54,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-14 16:20:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-14 16:20:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-14 16:20:54,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:54,910 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:54,911 INFO L424 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:54,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:54,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1014459966, now seen corresponding path program 67 times [2018-10-14 16:20:54,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 0 proven. 6700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:20:57,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:57,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 16:20:57,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 16:20:57,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 16:20:57,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=2552, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 16:20:57,058 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 71 states. [2018-10-14 16:21:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:00,518 INFO L93 Difference]: Finished difference Result 322 states and 322 transitions. [2018-10-14 16:21:00,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:21:00,518 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 316 [2018-10-14 16:21:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:00,519 INFO L225 Difference]: With dead ends: 322 [2018-10-14 16:21:00,519 INFO L226 Difference]: Without dead ends: 322 [2018-10-14 16:21:00,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7175, Invalid=11731, Unknown=0, NotChecked=0, Total=18906 [2018-10-14 16:21:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-10-14 16:21:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2018-10-14 16:21:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-10-14 16:21:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-10-14 16:21:00,524 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 316 [2018-10-14 16:21:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:00,524 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-10-14 16:21:00,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 16:21:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-10-14 16:21:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-14 16:21:00,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:00,525 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:00,525 INFO L424 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:00,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 578489568, now seen corresponding path program 68 times [2018-10-14 16:21:00,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:03,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:03,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-14 16:21:03,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-14 16:21:03,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-14 16:21:03,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=2624, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:21:03,129 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 72 states. [2018-10-14 16:21:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:06,334 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-14 16:21:06,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-14 16:21:06,335 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 319 [2018-10-14 16:21:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:06,336 INFO L225 Difference]: With dead ends: 325 [2018-10-14 16:21:06,336 INFO L226 Difference]: Without dead ends: 325 [2018-10-14 16:21:06,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7384, Invalid=12076, Unknown=0, NotChecked=0, Total=19460 [2018-10-14 16:21:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-10-14 16:21:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2018-10-14 16:21:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-14 16:21:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-14 16:21:06,340 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 319 [2018-10-14 16:21:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:06,340 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-14 16:21:06,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-14 16:21:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-14 16:21:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-14 16:21:06,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:06,341 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:06,342 INFO L424 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:06,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash 565465854, now seen corresponding path program 69 times [2018-10-14 16:21:06,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:08,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:08,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:21:08,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:21:08,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:21:08,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=2697, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:21:08,930 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 73 states. [2018-10-14 16:21:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:12,125 INFO L93 Difference]: Finished difference Result 328 states and 328 transitions. [2018-10-14 16:21:12,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-14 16:21:12,125 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 322 [2018-10-14 16:21:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:12,126 INFO L225 Difference]: With dead ends: 328 [2018-10-14 16:21:12,127 INFO L226 Difference]: Without dead ends: 328 [2018-10-14 16:21:12,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7596, Invalid=12426, Unknown=0, NotChecked=0, Total=20022 [2018-10-14 16:21:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-14 16:21:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2018-10-14 16:21:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-14 16:21:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-10-14 16:21:12,130 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 322 [2018-10-14 16:21:12,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:12,130 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-10-14 16:21:12,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:21:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-10-14 16:21:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-14 16:21:12,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:12,132 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:12,132 INFO L424 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:12,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash -876941280, now seen corresponding path program 70 times [2018-10-14 16:21:12,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 0 proven. 7315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:14,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:14,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-14 16:21:14,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-14 16:21:14,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-14 16:21:14,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2631, Invalid=2771, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:21:14,728 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 74 states. [2018-10-14 16:21:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:18,434 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-10-14 16:21:18,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:21:18,434 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 325 [2018-10-14 16:21:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:18,435 INFO L225 Difference]: With dead ends: 331 [2018-10-14 16:21:18,435 INFO L226 Difference]: Without dead ends: 331 [2018-10-14 16:21:18,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7811, Invalid=12781, Unknown=0, NotChecked=0, Total=20592 [2018-10-14 16:21:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-14 16:21:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-10-14 16:21:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-14 16:21:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-10-14 16:21:18,438 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 325 [2018-10-14 16:21:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:18,439 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-10-14 16:21:18,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-14 16:21:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-10-14 16:21:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-14 16:21:18,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:18,440 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:18,440 INFO L424 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:18,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -480073794, now seen corresponding path program 71 times [2018-10-14 16:21:18,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 0 proven. 7526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:21,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:21,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-14 16:21:21,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-14 16:21:21,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-14 16:21:21,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2704, Invalid=2846, Unknown=0, NotChecked=0, Total=5550 [2018-10-14 16:21:21,198 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2018-10-14 16:21:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:25,027 INFO L93 Difference]: Finished difference Result 334 states and 334 transitions. [2018-10-14 16:21:25,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-14 16:21:25,027 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 328 [2018-10-14 16:21:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:25,028 INFO L225 Difference]: With dead ends: 334 [2018-10-14 16:21:25,029 INFO L226 Difference]: Without dead ends: 334 [2018-10-14 16:21:25,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8029, Invalid=13141, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:21:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-14 16:21:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2018-10-14 16:21:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-14 16:21:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-10-14 16:21:25,032 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 328 [2018-10-14 16:21:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:25,032 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-10-14 16:21:25,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-14 16:21:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-10-14 16:21:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-14 16:21:25,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:25,033 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:25,034 INFO L424 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:25,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1445764256, now seen corresponding path program 72 times [2018-10-14 16:21:25,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 0 proven. 7740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:27,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:27,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 16:21:27,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 16:21:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 16:21:27,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2778, Invalid=2922, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:21:27,503 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 76 states. [2018-10-14 16:21:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:31,355 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-14 16:21:31,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 16:21:31,355 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 331 [2018-10-14 16:21:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:31,356 INFO L225 Difference]: With dead ends: 337 [2018-10-14 16:21:31,356 INFO L226 Difference]: Without dead ends: 337 [2018-10-14 16:21:31,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8250, Invalid=13506, Unknown=0, NotChecked=0, Total=21756 [2018-10-14 16:21:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-10-14 16:21:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2018-10-14 16:21:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-14 16:21:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-14 16:21:31,360 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 331 [2018-10-14 16:21:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:31,360 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-14 16:21:31,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 16:21:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-14 16:21:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-14 16:21:31,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:31,361 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:31,362 INFO L424 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:31,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1655598206, now seen corresponding path program 73 times [2018-10-14 16:21:31,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 0 proven. 7957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:34,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:34,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-14 16:21:34,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-14 16:21:34,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-14 16:21:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2853, Invalid=2999, Unknown=0, NotChecked=0, Total=5852 [2018-10-14 16:21:34,148 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 77 states. [2018-10-14 16:21:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:37,861 INFO L93 Difference]: Finished difference Result 340 states and 340 transitions. [2018-10-14 16:21:37,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-14 16:21:37,861 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 334 [2018-10-14 16:21:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:37,863 INFO L225 Difference]: With dead ends: 340 [2018-10-14 16:21:37,863 INFO L226 Difference]: Without dead ends: 340 [2018-10-14 16:21:37,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8474, Invalid=13876, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 16:21:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-14 16:21:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2018-10-14 16:21:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-14 16:21:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-10-14 16:21:37,866 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 334 [2018-10-14 16:21:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:37,866 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-10-14 16:21:37,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-14 16:21:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-10-14 16:21:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-14 16:21:37,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:37,868 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:37,868 INFO L424 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:37,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1008232096, now seen corresponding path program 74 times [2018-10-14 16:21:37,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 0 proven. 8177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:40,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:40,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-14 16:21:40,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-14 16:21:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-14 16:21:40,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=3077, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:21:40,831 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 78 states. [2018-10-14 16:21:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:44,811 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-10-14 16:21:44,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-14 16:21:44,811 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 337 [2018-10-14 16:21:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:44,812 INFO L225 Difference]: With dead ends: 343 [2018-10-14 16:21:44,812 INFO L226 Difference]: Without dead ends: 343 [2018-10-14 16:21:44,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8701, Invalid=14251, Unknown=0, NotChecked=0, Total=22952 [2018-10-14 16:21:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-14 16:21:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2018-10-14 16:21:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-10-14 16:21:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-10-14 16:21:44,816 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 337 [2018-10-14 16:21:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:44,816 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-10-14 16:21:44,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-14 16:21:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-10-14 16:21:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-14 16:21:44,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:44,818 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:44,818 INFO L424 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:44,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash -272391874, now seen corresponding path program 75 times [2018-10-14 16:21:44,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 0 proven. 8400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:47,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:47,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-14 16:21:47,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-14 16:21:47,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-14 16:21:47,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=3156, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:21:47,462 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 79 states. [2018-10-14 16:21:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:51,646 INFO L93 Difference]: Finished difference Result 346 states and 346 transitions. [2018-10-14 16:21:51,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-14 16:21:51,646 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 340 [2018-10-14 16:21:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:51,648 INFO L225 Difference]: With dead ends: 346 [2018-10-14 16:21:51,648 INFO L226 Difference]: Without dead ends: 346 [2018-10-14 16:21:51,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8931, Invalid=14631, Unknown=0, NotChecked=0, Total=23562 [2018-10-14 16:21:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-10-14 16:21:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2018-10-14 16:21:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-14 16:21:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-10-14 16:21:51,652 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 340 [2018-10-14 16:21:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:51,652 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-10-14 16:21:51,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-14 16:21:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-10-14 16:21:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-14 16:21:51,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:51,653 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:51,653 INFO L424 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:51,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 853408224, now seen corresponding path program 76 times [2018-10-14 16:21:51,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 0 proven. 8626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:21:54,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:54,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-14 16:21:54,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-14 16:21:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-14 16:21:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3084, Invalid=3236, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:21:54,650 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 80 states. [2018-10-14 16:21:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:58,625 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-14 16:21:58,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-14 16:21:58,626 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 343 [2018-10-14 16:21:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:58,627 INFO L225 Difference]: With dead ends: 349 [2018-10-14 16:21:58,627 INFO L226 Difference]: Without dead ends: 349 [2018-10-14 16:21:58,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9164, Invalid=15016, Unknown=0, NotChecked=0, Total=24180 [2018-10-14 16:21:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-10-14 16:21:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2018-10-14 16:21:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-14 16:21:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-14 16:21:58,630 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 343 [2018-10-14 16:21:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:58,630 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-14 16:21:58,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-14 16:21:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-14 16:21:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-14 16:21:58,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:58,632 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:58,632 INFO L424 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:58,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash 164513278, now seen corresponding path program 77 times [2018-10-14 16:21:58,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 0 proven. 8855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:01,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:01,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-14 16:22:01,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-14 16:22:01,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-14 16:22:01,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=3317, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 16:22:01,612 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 81 states. [2018-10-14 16:22:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:05,735 INFO L93 Difference]: Finished difference Result 352 states and 352 transitions. [2018-10-14 16:22:05,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-14 16:22:05,735 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 346 [2018-10-14 16:22:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:05,736 INFO L225 Difference]: With dead ends: 352 [2018-10-14 16:22:05,737 INFO L226 Difference]: Without dead ends: 352 [2018-10-14 16:22:05,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=9400, Invalid=15406, Unknown=0, NotChecked=0, Total=24806 [2018-10-14 16:22:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-10-14 16:22:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2018-10-14 16:22:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-10-14 16:22:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-10-14 16:22:05,741 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 346 [2018-10-14 16:22:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:05,741 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-10-14 16:22:05,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-14 16:22:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-10-14 16:22:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-14 16:22:05,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:05,742 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:05,743 INFO L424 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:05,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082720, now seen corresponding path program 78 times [2018-10-14 16:22:05,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 0 proven. 9087 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:08,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:08,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-14 16:22:08,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-14 16:22:08,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-14 16:22:08,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3243, Invalid=3399, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:22:08,784 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 82 states. [2018-10-14 16:22:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:13,149 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-10-14 16:22:13,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-14 16:22:13,150 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 349 [2018-10-14 16:22:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:13,151 INFO L225 Difference]: With dead ends: 355 [2018-10-14 16:22:13,151 INFO L226 Difference]: Without dead ends: 355 [2018-10-14 16:22:13,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9639, Invalid=15801, Unknown=0, NotChecked=0, Total=25440 [2018-10-14 16:22:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-14 16:22:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 353. [2018-10-14 16:22:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-10-14 16:22:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-10-14 16:22:13,155 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 349 [2018-10-14 16:22:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:13,155 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-10-14 16:22:13,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-14 16:22:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-10-14 16:22:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-10-14 16:22:13,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:13,156 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:13,157 INFO L424 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:13,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash 519723710, now seen corresponding path program 79 times [2018-10-14 16:22:13,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 0 proven. 9322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:16,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:16,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-14 16:22:16,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-14 16:22:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-14 16:22:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3324, Invalid=3482, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:22:16,392 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 83 states. [2018-10-14 16:22:20,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:20,937 INFO L93 Difference]: Finished difference Result 358 states and 358 transitions. [2018-10-14 16:22:20,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-14 16:22:20,937 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 352 [2018-10-14 16:22:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:20,939 INFO L225 Difference]: With dead ends: 358 [2018-10-14 16:22:20,939 INFO L226 Difference]: Without dead ends: 358 [2018-10-14 16:22:20,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9881, Invalid=16201, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:22:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-10-14 16:22:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-10-14 16:22:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-14 16:22:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-10-14 16:22:20,942 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 352 [2018-10-14 16:22:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:20,942 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-10-14 16:22:20,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-14 16:22:20,943 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-10-14 16:22:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-14 16:22:20,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:20,944 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:20,944 INFO L424 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:20,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2076520352, now seen corresponding path program 80 times [2018-10-14 16:22:20,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 0 proven. 9560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:23,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:23,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-10-14 16:22:23,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-14 16:22:23,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-14 16:22:23,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3406, Invalid=3566, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:22:23,928 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 84 states. [2018-10-14 16:22:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:28,424 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-14 16:22:28,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 16:22:28,424 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 355 [2018-10-14 16:22:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:28,425 INFO L225 Difference]: With dead ends: 361 [2018-10-14 16:22:28,426 INFO L226 Difference]: Without dead ends: 361 [2018-10-14 16:22:28,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10126, Invalid=16606, Unknown=0, NotChecked=0, Total=26732 [2018-10-14 16:22:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-14 16:22:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 359. [2018-10-14 16:22:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-14 16:22:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-14 16:22:28,429 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 355 [2018-10-14 16:22:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:28,430 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-14 16:22:28,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-14 16:22:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-14 16:22:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-14 16:22:28,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:28,432 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:28,432 INFO L424 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:28,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1282662270, now seen corresponding path program 81 times [2018-10-14 16:22:28,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:31,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:31,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-14 16:22:31,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-14 16:22:31,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-14 16:22:31,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3489, Invalid=3651, Unknown=0, NotChecked=0, Total=7140 [2018-10-14 16:22:31,733 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 85 states. [2018-10-14 16:22:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:36,450 INFO L93 Difference]: Finished difference Result 364 states and 364 transitions. [2018-10-14 16:22:36,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-14 16:22:36,450 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 358 [2018-10-14 16:22:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:36,452 INFO L225 Difference]: With dead ends: 364 [2018-10-14 16:22:36,452 INFO L226 Difference]: Without dead ends: 364 [2018-10-14 16:22:36,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=10374, Invalid=17016, Unknown=0, NotChecked=0, Total=27390 [2018-10-14 16:22:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-10-14 16:22:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 362. [2018-10-14 16:22:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-10-14 16:22:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-10-14 16:22:36,456 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 358 [2018-10-14 16:22:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:36,456 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-10-14 16:22:36,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-14 16:22:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-10-14 16:22:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-14 16:22:36,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:36,457 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:36,458 INFO L424 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:36,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1954157472, now seen corresponding path program 82 times [2018-10-14 16:22:36,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 0 proven. 10045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:39,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:39,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-10-14 16:22:39,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-14 16:22:39,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-14 16:22:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3573, Invalid=3737, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:22:39,563 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 86 states. [2018-10-14 16:22:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:44,403 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-10-14 16:22:44,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-14 16:22:44,404 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 361 [2018-10-14 16:22:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:44,405 INFO L225 Difference]: With dead ends: 367 [2018-10-14 16:22:44,405 INFO L226 Difference]: Without dead ends: 367 [2018-10-14 16:22:44,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=10625, Invalid=17431, Unknown=0, NotChecked=0, Total=28056 [2018-10-14 16:22:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-14 16:22:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2018-10-14 16:22:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-14 16:22:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-10-14 16:22:44,409 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 361 [2018-10-14 16:22:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:44,409 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-10-14 16:22:44,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-14 16:22:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-10-14 16:22:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-14 16:22:44,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:44,410 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:44,411 INFO L424 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:44,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 510055486, now seen corresponding path program 83 times [2018-10-14 16:22:44,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 0 proven. 10292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:47,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:47,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-14 16:22:47,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-14 16:22:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-14 16:22:47,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3658, Invalid=3824, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:22:47,862 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 87 states. [2018-10-14 16:22:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:52,529 INFO L93 Difference]: Finished difference Result 370 states and 370 transitions. [2018-10-14 16:22:52,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-14 16:22:52,529 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 364 [2018-10-14 16:22:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:52,530 INFO L225 Difference]: With dead ends: 370 [2018-10-14 16:22:52,530 INFO L226 Difference]: Without dead ends: 370 [2018-10-14 16:22:52,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=10879, Invalid=17851, Unknown=0, NotChecked=0, Total=28730 [2018-10-14 16:22:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-10-14 16:22:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2018-10-14 16:22:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-10-14 16:22:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-10-14 16:22:52,534 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 364 [2018-10-14 16:22:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:52,535 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-10-14 16:22:52,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-14 16:22:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-10-14 16:22:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-14 16:22:52,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:52,536 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:52,536 INFO L424 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:52,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:52,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1955194592, now seen corresponding path program 84 times [2018-10-14 16:22:52,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 0 proven. 10542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:22:56,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:56,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-14 16:22:56,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-14 16:22:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-14 16:22:56,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3744, Invalid=3912, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:22:56,143 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 88 states. [2018-10-14 16:23:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:01,057 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-14 16:23:01,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-14 16:23:01,058 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 367 [2018-10-14 16:23:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:01,059 INFO L225 Difference]: With dead ends: 373 [2018-10-14 16:23:01,059 INFO L226 Difference]: Without dead ends: 373 [2018-10-14 16:23:01,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11136, Invalid=18276, Unknown=0, NotChecked=0, Total=29412 [2018-10-14 16:23:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-14 16:23:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2018-10-14 16:23:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-14 16:23:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-14 16:23:01,064 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 367 [2018-10-14 16:23:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:01,064 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-14 16:23:01,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-14 16:23:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-14 16:23:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-14 16:23:01,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:01,066 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:01,066 INFO L424 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:01,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1342126334, now seen corresponding path program 85 times [2018-10-14 16:23:01,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 0 proven. 10795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:04,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:04,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-10-14 16:23:04,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-14 16:23:04,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-14 16:23:04,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=4001, Unknown=0, NotChecked=0, Total=7832 [2018-10-14 16:23:04,489 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 89 states. [2018-10-14 16:23:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:09,631 INFO L93 Difference]: Finished difference Result 376 states and 376 transitions. [2018-10-14 16:23:09,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:23:09,631 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 370 [2018-10-14 16:23:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:09,633 INFO L225 Difference]: With dead ends: 376 [2018-10-14 16:23:09,633 INFO L226 Difference]: Without dead ends: 376 [2018-10-14 16:23:09,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11396, Invalid=18706, Unknown=0, NotChecked=0, Total=30102 [2018-10-14 16:23:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-10-14 16:23:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2018-10-14 16:23:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-10-14 16:23:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-10-14 16:23:09,638 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 370 [2018-10-14 16:23:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:09,638 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-10-14 16:23:09,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-14 16:23:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-10-14 16:23:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-14 16:23:09,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:09,641 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:09,641 INFO L424 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:09,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:09,641 INFO L82 PathProgramCache]: Analyzing trace with hash -373405152, now seen corresponding path program 86 times [2018-10-14 16:23:09,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 0 proven. 11051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:13,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:13,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-10-14 16:23:13,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-14 16:23:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-14 16:23:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3919, Invalid=4091, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:23:13,320 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 90 states. [2018-10-14 16:23:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:18,423 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-10-14 16:23:18,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-14 16:23:18,423 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 373 [2018-10-14 16:23:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:18,424 INFO L225 Difference]: With dead ends: 379 [2018-10-14 16:23:18,425 INFO L226 Difference]: Without dead ends: 379 [2018-10-14 16:23:18,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=11659, Invalid=19141, Unknown=0, NotChecked=0, Total=30800 [2018-10-14 16:23:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-14 16:23:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2018-10-14 16:23:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-10-14 16:23:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-10-14 16:23:18,429 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 373 [2018-10-14 16:23:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:18,429 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-10-14 16:23:18,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-14 16:23:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-10-14 16:23:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-14 16:23:18,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:18,431 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:18,431 INFO L424 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:18,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1956049474, now seen corresponding path program 87 times [2018-10-14 16:23:18,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 0 proven. 11310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:22,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:22,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-14 16:23:22,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-14 16:23:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-14 16:23:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=4182, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:23:22,091 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 91 states. [2018-10-14 16:23:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:27,284 INFO L93 Difference]: Finished difference Result 382 states and 382 transitions. [2018-10-14 16:23:27,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-14 16:23:27,285 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 376 [2018-10-14 16:23:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:27,286 INFO L225 Difference]: With dead ends: 382 [2018-10-14 16:23:27,286 INFO L226 Difference]: Without dead ends: 382 [2018-10-14 16:23:27,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11925, Invalid=19581, Unknown=0, NotChecked=0, Total=31506 [2018-10-14 16:23:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-14 16:23:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2018-10-14 16:23:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-14 16:23:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-10-14 16:23:27,291 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 376 [2018-10-14 16:23:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:27,291 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-10-14 16:23:27,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-14 16:23:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-10-14 16:23:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-14 16:23:27,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:27,293 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:27,293 INFO L424 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:27,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -362070688, now seen corresponding path program 88 times [2018-10-14 16:23:27,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 0 proven. 11572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:30,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:30,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-10-14 16:23:30,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-14 16:23:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-14 16:23:30,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4098, Invalid=4274, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:23:30,872 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 92 states. [2018-10-14 16:23:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:36,309 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-14 16:23:36,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-14 16:23:36,309 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 379 [2018-10-14 16:23:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:36,310 INFO L225 Difference]: With dead ends: 385 [2018-10-14 16:23:36,310 INFO L226 Difference]: Without dead ends: 385 [2018-10-14 16:23:36,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=12194, Invalid=20026, Unknown=0, NotChecked=0, Total=32220 [2018-10-14 16:23:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-10-14 16:23:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2018-10-14 16:23:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-14 16:23:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-14 16:23:36,315 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 379 [2018-10-14 16:23:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:36,315 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-14 16:23:36,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-14 16:23:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-14 16:23:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-14 16:23:36,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:36,317 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:36,317 INFO L424 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:36,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:36,317 INFO L82 PathProgramCache]: Analyzing trace with hash 701518462, now seen corresponding path program 89 times [2018-10-14 16:23:36,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 0 proven. 11837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:40,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:40,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-14 16:23:40,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-14 16:23:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-14 16:23:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4189, Invalid=4367, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:23:40,095 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 93 states. [2018-10-14 16:23:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:45,663 INFO L93 Difference]: Finished difference Result 388 states and 388 transitions. [2018-10-14 16:23:45,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-14 16:23:45,663 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 382 [2018-10-14 16:23:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:45,664 INFO L225 Difference]: With dead ends: 388 [2018-10-14 16:23:45,665 INFO L226 Difference]: Without dead ends: 388 [2018-10-14 16:23:45,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=12466, Invalid=20476, Unknown=0, NotChecked=0, Total=32942 [2018-10-14 16:23:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-14 16:23:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2018-10-14 16:23:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-14 16:23:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-14 16:23:45,669 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 382 [2018-10-14 16:23:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:45,669 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-14 16:23:45,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-14 16:23:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-14 16:23:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-14 16:23:45,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:45,670 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:45,671 INFO L424 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:45,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2112143520, now seen corresponding path program 90 times [2018-10-14 16:23:45,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 0 proven. 12105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:49,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:49,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-10-14 16:23:49,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-14 16:23:49,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-14 16:23:49,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4281, Invalid=4461, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:23:49,716 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 94 states. [2018-10-14 16:23:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:55,357 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-10-14 16:23:55,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:23:55,357 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 385 [2018-10-14 16:23:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:55,358 INFO L225 Difference]: With dead ends: 391 [2018-10-14 16:23:55,358 INFO L226 Difference]: Without dead ends: 391 [2018-10-14 16:23:55,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=12741, Invalid=20931, Unknown=0, NotChecked=0, Total=33672 [2018-10-14 16:23:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-14 16:23:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2018-10-14 16:23:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-10-14 16:23:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-10-14 16:23:55,364 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 385 [2018-10-14 16:23:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:55,364 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-10-14 16:23:55,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-14 16:23:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-10-14 16:23:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-14 16:23:55,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:55,367 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:55,367 INFO L424 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:55,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash -211744962, now seen corresponding path program 91 times [2018-10-14 16:23:55,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 0 proven. 12376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:23:59,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:59,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-10-14 16:23:59,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-14 16:23:59,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-14 16:23:59,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4374, Invalid=4556, Unknown=0, NotChecked=0, Total=8930 [2018-10-14 16:23:59,473 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 95 states. [2018-10-14 16:24:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:05,136 INFO L93 Difference]: Finished difference Result 394 states and 394 transitions. [2018-10-14 16:24:05,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-14 16:24:05,136 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 388 [2018-10-14 16:24:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:05,137 INFO L225 Difference]: With dead ends: 394 [2018-10-14 16:24:05,137 INFO L226 Difference]: Without dead ends: 394 [2018-10-14 16:24:05,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=13019, Invalid=21391, Unknown=0, NotChecked=0, Total=34410 [2018-10-14 16:24:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-10-14 16:24:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2018-10-14 16:24:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-10-14 16:24:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-10-14 16:24:05,141 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 388 [2018-10-14 16:24:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:05,141 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-10-14 16:24:05,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-14 16:24:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-10-14 16:24:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-10-14 16:24:05,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:05,143 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:05,143 INFO L424 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:05,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash -595668000, now seen corresponding path program 92 times [2018-10-14 16:24:05,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:24:09,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:09,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-10-14 16:24:09,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-14 16:24:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-14 16:24:09,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4468, Invalid=4652, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:24:09,209 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 96 states. [2018-10-14 16:24:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:14,975 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-14 16:24:14,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-14 16:24:14,975 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 391 [2018-10-14 16:24:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:14,976 INFO L225 Difference]: With dead ends: 397 [2018-10-14 16:24:14,976 INFO L226 Difference]: Without dead ends: 397 [2018-10-14 16:24:14,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=13300, Invalid=21856, Unknown=0, NotChecked=0, Total=35156 [2018-10-14 16:24:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-10-14 16:24:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2018-10-14 16:24:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-14 16:24:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-14 16:24:14,980 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 391 [2018-10-14 16:24:14,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:14,980 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-14 16:24:14,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-14 16:24:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-14 16:24:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-14 16:24:14,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:14,982 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:14,982 INFO L424 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:14,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:14,983 INFO L82 PathProgramCache]: Analyzing trace with hash -548983810, now seen corresponding path program 93 times [2018-10-14 16:24:14,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:24:19,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:19,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-10-14 16:24:19,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-14 16:24:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-14 16:24:19,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4563, Invalid=4749, Unknown=0, NotChecked=0, Total=9312 [2018-10-14 16:24:19,209 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 97 states. [2018-10-14 16:24:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:25,152 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2018-10-14 16:24:25,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-14 16:24:25,153 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 394 [2018-10-14 16:24:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:25,154 INFO L225 Difference]: With dead ends: 398 [2018-10-14 16:24:25,154 INFO L226 Difference]: Without dead ends: 398 [2018-10-14 16:24:25,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=13584, Invalid=22326, Unknown=0, NotChecked=0, Total=35910 [2018-10-14 16:24:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-10-14 16:24:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-10-14 16:24:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-10-14 16:24:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-10-14 16:24:25,159 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 394 [2018-10-14 16:24:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:25,159 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-10-14 16:24:25,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-14 16:24:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-10-14 16:24:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-14 16:24:25,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:25,160 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:25,161 INFO L424 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:25,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:25,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1349683424, now seen corresponding path program 94 times [2018-10-14 16:24:25,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:27,371 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-10-14 16:24:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13207 trivial. 0 not checked. [2018-10-14 16:24:27,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:24:27,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-14 16:24:27,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:24:27,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:24:27,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:24:27,765 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 21 states. [2018-10-14 16:24:28,871 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2018-10-14 16:24:30,316 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-14 16:24:30,598 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-14 16:24:30,948 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:24:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:31,127 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2018-10-14 16:24:31,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:24:31,128 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 397 [2018-10-14 16:24:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:31,129 INFO L225 Difference]: With dead ends: 396 [2018-10-14 16:24:31,129 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:24:31,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:24:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:24:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:24:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:24:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:24:31,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2018-10-14 16:24:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:31,130 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:24:31,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:24:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:24:31,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:24:31,137 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_25.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:24:31 BoogieIcfgContainer [2018-10-14 16:24:31,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:24:31,138 INFO L168 Benchmark]: Toolchain (without parser) took 378413.88 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 155.7 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 15.6 MB). Peak memory consumption was 171.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,139 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:24:31,139 INFO L168 Benchmark]: Boogie Preprocessor took 78.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:24:31,140 INFO L168 Benchmark]: RCFGBuilder took 1001.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,140 INFO L168 Benchmark]: TraceAbstraction took 377320.56 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 155.7 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -16.1 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:31,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1001.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 377320.56 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 155.7 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -16.1 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 188]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. SAFE Result, 377.2s OverallTime, 95 OverallIterations, 94 TraceHistogramMax, 216.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10573 SDtfs, 27458 SDslu, 371718 SDs, 0 SdLazy, 31689 SolverSat, 4732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9176 GetRequests, 190 SyntacticMatches, 16 SemanticMatches, 8970 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138623 ImplicationChecksByTransitivity, 321.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=398occurred in iteration=94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 95 MinimizatonAttempts, 186 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 151.0s InterpolantComputationTime, 24320 NumberOfCodeBlocks, 24320 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 24225 ConstructedInterpolants, 0 QuantifiedInterpolants, 24810555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 95 InterpolantComputations, 2 PerfectInterpolantSequences, 13207/419710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/20051113-1.c_false-valid-memtrack.i_25.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-24-31-152.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/20051113-1.c_false-valid-memtrack.i_25.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-24-31-152.csv Received shutdown request...