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_33.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:18:12,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:18:12,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:18:12,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:18:12,582 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:18:12,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:18:12,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:18:12,586 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:18:12,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:18:12,589 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:18:12,590 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:18:12,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:18:12,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:18:12,592 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:18:12,594 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:18:12,594 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:18:12,595 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:18:12,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:18:12,600 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:18:12,602 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:18:12,603 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:18:12,604 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:18:12,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:18:12,616 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 16:18:12,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:18:12,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:18:12,638 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:18:12,638 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:18:12,638 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:18:12,639 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:18:12,642 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:18:12,642 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:18:12,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:18:12,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:18:12,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:18:12,643 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:18:12,643 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:18:12,644 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:18:12,644 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:18:12,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:18:12,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:18:12,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:18:12,730 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:18:12,730 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:18:12,731 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_33.bpl [2018-10-14 16:18:12,732 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/20051113-1.c_false-valid-memtrack.i_33.bpl' [2018-10-14 16:18:12,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:18:12,813 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:18:12,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:18:12,814 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:18:12,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/1) ... [2018-10-14 16:18:12,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:18:12,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:18:12,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:18:12,914 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:18:12,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "20051113-1.c_false-valid-memtrack.i_33.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 16:18:12,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:18:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:18:12,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:18:13,875 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:18:13,876 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13 BoogieIcfgContainer [2018-10-14 16:18:13,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:18:13,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:18:13,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:18:13,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:18:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:18:12" (1/2) ... [2018-10-14 16:18:13,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2570278f and model type 20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:18:13, skipping insertion in model container [2018-10-14 16:18:13,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:18:13" (2/2) ... [2018-10-14 16:18:13,885 INFO L112 eAbstractionObserver]: Analyzing ICFG 20051113-1.c_false-valid-memtrack.i_33.bpl [2018-10-14 16:18:13,896 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:18:13,906 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:18:13,925 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:18:13,957 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:18:13,958 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:18:13,958 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:18:13,958 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:18:13,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:18:13,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:18:13,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:18:13,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:18:13,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:18:13,992 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-10-14 16:18:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-14 16:18:14,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:14,026 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:14,027 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:14,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:14,037 INFO L82 PathProgramCache]: Analyzing trace with hash -776846047, now seen corresponding path program 1 times [2018-10-14 16:18:14,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,453 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 16:18:14,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:18:14,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-14 16:18:14,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-14 16:18:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-14 16:18:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:18:14,483 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 4 states. [2018-10-14 16:18:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:14,620 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-14 16:18:14,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-14 16:18:14,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-14 16:18:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:14,636 INFO L225 Difference]: With dead ends: 132 [2018-10-14 16:18:14,637 INFO L226 Difference]: Without dead ends: 132 [2018-10-14 16:18:14,639 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 16:18:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-14 16:18:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2018-10-14 16:18:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-14 16:18:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-14 16:18:14,686 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 126 [2018-10-14 16:18:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:14,687 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-14 16:18:14,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-14 16:18:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-14 16:18:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-14 16:18:14,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:14,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:14,691 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:14,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:14,692 INFO L82 PathProgramCache]: Analyzing trace with hash 919532355, now seen corresponding path program 1 times [2018-10-14 16:18:14,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:14,924 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 16:18:14,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:14,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-14 16:18:14,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-14 16:18:14,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-14 16:18:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-14 16:18:14,928 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 5 states. [2018-10-14 16:18:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:15,119 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-14 16:18:15,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-14 16:18:15,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-10-14 16:18:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:15,123 INFO L225 Difference]: With dead ends: 135 [2018-10-14 16:18:15,123 INFO L226 Difference]: Without dead ends: 135 [2018-10-14 16:18:15,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-14 16:18:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2018-10-14 16:18:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 16:18:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 16:18:15,138 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 129 [2018-10-14 16:18:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:15,139 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 16:18:15,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-14 16:18:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 16:18:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 16:18:15,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:15,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:15,142 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:15,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:15,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1151665695, now seen corresponding path program 2 times [2018-10-14 16:18:15,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,340 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 16:18:15,340 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-14 16:18:15,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-14 16:18:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-14 16:18:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:18:15,342 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 6 states. [2018-10-14 16:18:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:15,472 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-14 16:18:15,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-14 16:18:15,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-14 16:18:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:15,476 INFO L225 Difference]: With dead ends: 138 [2018-10-14 16:18:15,476 INFO L226 Difference]: Without dead ends: 138 [2018-10-14 16:18:15,477 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 16:18:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-14 16:18:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2018-10-14 16:18:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-14 16:18:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-14 16:18:15,488 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 132 [2018-10-14 16:18:15,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:15,488 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-14 16:18:15,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-14 16:18:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-14 16:18:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-14 16:18:15,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:15,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:15,492 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:15,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1582368387, now seen corresponding path program 3 times [2018-10-14 16:18:15,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:15,710 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 16:18:15,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:15,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-14 16:18:15,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:18:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:18:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:18:15,712 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 7 states. [2018-10-14 16:18:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,146 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-14 16:18:16,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-14 16:18:16,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2018-10-14 16:18:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,155 INFO L225 Difference]: With dead ends: 141 [2018-10-14 16:18:16,155 INFO L226 Difference]: Without dead ends: 141 [2018-10-14 16:18:16,156 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 16:18:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-14 16:18:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2018-10-14 16:18:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-14 16:18:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-14 16:18:16,178 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 135 [2018-10-14 16:18:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,178 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-14 16:18:16,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:18:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-14 16:18:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-14 16:18:16,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:16,186 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1431903905, now seen corresponding path program 4 times [2018-10-14 16:18:16,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:16,607 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 16:18:16,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:16,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:18:16,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:18:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:18:16,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:18:16,609 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 8 states. [2018-10-14 16:18:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:16,868 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-14 16:18:16,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:18:16,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2018-10-14 16:18:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:16,874 INFO L225 Difference]: With dead ends: 144 [2018-10-14 16:18:16,874 INFO L226 Difference]: Without dead ends: 144 [2018-10-14 16:18:16,875 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 16:18:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-14 16:18:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-10-14 16:18:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-14 16:18:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-14 16:18:16,892 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 138 [2018-10-14 16:18:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:16,892 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-14 16:18:16,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:18:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-14 16:18:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-14 16:18:16,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:16,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:16,899 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:16,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:16,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1404589629, now seen corresponding path program 5 times [2018-10-14 16:18:16,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:17,213 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 16:18:17,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:17,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-14 16:18:17,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:18:17,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:18:17,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:18:17,215 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 9 states. [2018-10-14 16:18:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:17,427 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-14 16:18:17,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:18:17,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2018-10-14 16:18:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:17,430 INFO L225 Difference]: With dead ends: 147 [2018-10-14 16:18:17,431 INFO L226 Difference]: Without dead ends: 147 [2018-10-14 16:18:17,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-14 16:18:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-10-14 16:18:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-14 16:18:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-14 16:18:17,446 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 141 [2018-10-14 16:18:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:17,446 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-14 16:18:17,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:18:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-14 16:18:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-14 16:18:17,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:17,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:17,452 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:17,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash 98087777, now seen corresponding path program 6 times [2018-10-14 16:18:17,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,026 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 16:18:18,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:18:18,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:18:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:18:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:18:18,027 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 10 states. [2018-10-14 16:18:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:18,255 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-14 16:18:18,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:18:18,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-10-14 16:18:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:18,257 INFO L225 Difference]: With dead ends: 150 [2018-10-14 16:18:18,257 INFO L226 Difference]: Without dead ends: 150 [2018-10-14 16:18:18,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-14 16:18:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2018-10-14 16:18:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-14 16:18:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-14 16:18:18,263 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 144 [2018-10-14 16:18:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:18,264 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-14 16:18:18,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:18:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-14 16:18:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-14 16:18:18,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:18,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:18,267 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:18,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash -83436285, now seen corresponding path program 7 times [2018-10-14 16:18:18,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:18,475 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 16:18:18,476 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:18,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:18:18,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:18:18,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:18:18,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:18:18,477 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 11 states. [2018-10-14 16:18:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:18,665 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-14 16:18:18,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:18:18,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 147 [2018-10-14 16:18:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:18,673 INFO L225 Difference]: With dead ends: 153 [2018-10-14 16:18:18,673 INFO L226 Difference]: Without dead ends: 153 [2018-10-14 16:18:18,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-14 16:18:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2018-10-14 16:18:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-14 16:18:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-14 16:18:18,681 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 147 [2018-10-14 16:18:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-14 16:18:18,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:18:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-14 16:18:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-14 16:18:18,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:18,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:18,686 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:18,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash -502941663, now seen corresponding path program 8 times [2018-10-14 16:18:18,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:19,258 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 16:18:19,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:19,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:18:19,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:18:19,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:18:19,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:18:19,260 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 12 states. [2018-10-14 16:18:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:19,509 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-14 16:18:19,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:18:19,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2018-10-14 16:18:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:19,517 INFO L225 Difference]: With dead ends: 156 [2018-10-14 16:18:19,518 INFO L226 Difference]: Without dead ends: 156 [2018-10-14 16:18:19,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-14 16:18:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2018-10-14 16:18:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-14 16:18:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-14 16:18:19,527 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 150 [2018-10-14 16:18:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:19,528 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-14 16:18:19,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:18:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-14 16:18:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-14 16:18:19,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:19,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:19,538 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:19,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:19,539 INFO L82 PathProgramCache]: Analyzing trace with hash 367173699, now seen corresponding path program 9 times [2018-10-14 16:18:19,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,375 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 16:18:20,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-14 16:18:20,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-14 16:18:20,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-14 16:18:20,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:18:20,377 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 13 states. [2018-10-14 16:18:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:20,579 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-14 16:18:20,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:18:20,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-10-14 16:18:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:20,581 INFO L225 Difference]: With dead ends: 159 [2018-10-14 16:18:20,581 INFO L226 Difference]: Without dead ends: 159 [2018-10-14 16:18:20,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-14 16:18:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2018-10-14 16:18:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-14 16:18:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-14 16:18:20,585 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 153 [2018-10-14 16:18:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:20,586 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-14 16:18:20,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-14 16:18:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-14 16:18:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-14 16:18:20,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:20,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:20,588 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:20,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1846291681, now seen corresponding path program 10 times [2018-10-14 16:18:20,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:20,831 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 16:18:20,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:20,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-14 16:18:20,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-14 16:18:20,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-14 16:18:20,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:18:20,833 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 14 states. [2018-10-14 16:18:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:21,143 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-14 16:18:21,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:18:21,145 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2018-10-14 16:18:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:21,146 INFO L225 Difference]: With dead ends: 162 [2018-10-14 16:18:21,146 INFO L226 Difference]: Without dead ends: 162 [2018-10-14 16:18:21,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=331, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-14 16:18:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2018-10-14 16:18:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-14 16:18:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-14 16:18:21,151 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 156 [2018-10-14 16:18:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:21,151 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-14 16:18:21,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-14 16:18:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-14 16:18:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-14 16:18:21,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:21,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:21,154 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:21,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:21,154 INFO L82 PathProgramCache]: Analyzing trace with hash -114363517, now seen corresponding path program 11 times [2018-10-14 16:18:21,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:22,065 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 16:18:22,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:22,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-14 16:18:22,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:18:22,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:18:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:18:22,067 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 15 states. [2018-10-14 16:18:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:22,385 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-14 16:18:22,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:18:22,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 159 [2018-10-14 16:18:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:22,386 INFO L225 Difference]: With dead ends: 165 [2018-10-14 16:18:22,386 INFO L226 Difference]: Without dead ends: 165 [2018-10-14 16:18:22,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-14 16:18:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2018-10-14 16:18:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-14 16:18:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-14 16:18:22,391 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 159 [2018-10-14 16:18:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:22,392 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-14 16:18:22,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:18:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-14 16:18:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-14 16:18:22,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:22,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:22,393 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:22,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1561858465, now seen corresponding path program 12 times [2018-10-14 16:18:22,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:22,758 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 16:18:22,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:22,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-14 16:18:22,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-14 16:18:22,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-14 16:18:22,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2018-10-14 16:18:22,760 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 16 states. [2018-10-14 16:18:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:23,098 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-14 16:18:23,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:18:23,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2018-10-14 16:18:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:23,101 INFO L225 Difference]: With dead ends: 168 [2018-10-14 16:18:23,101 INFO L226 Difference]: Without dead ends: 168 [2018-10-14 16:18:23,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-14 16:18:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2018-10-14 16:18:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-14 16:18:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-14 16:18:23,106 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 162 [2018-10-14 16:18:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:23,107 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-14 16:18:23,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-14 16:18:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-14 16:18:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-14 16:18:23,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:23,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:23,109 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:23,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:23,109 INFO L82 PathProgramCache]: Analyzing trace with hash 306173635, now seen corresponding path program 13 times [2018-10-14 16:18:23,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:23,386 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 16:18:23,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:23,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-14 16:18:23,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:18:23,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:18:23,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:18:23,388 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 17 states. [2018-10-14 16:18:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:23,753 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-14 16:18:23,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:18:23,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 165 [2018-10-14 16:18:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:23,755 INFO L225 Difference]: With dead ends: 171 [2018-10-14 16:18:23,755 INFO L226 Difference]: Without dead ends: 171 [2018-10-14 16:18:23,756 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 16:18:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-14 16:18:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2018-10-14 16:18:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-14 16:18:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-14 16:18:23,759 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 165 [2018-10-14 16:18:23,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:23,759 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-14 16:18:23,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:18:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-14 16:18:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-14 16:18:23,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:23,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:23,761 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:23,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1364551265, now seen corresponding path program 14 times [2018-10-14 16:18:23,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:24,357 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 16:18:24,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:24,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-14 16:18:24,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-14 16:18:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-14 16:18:24,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:18:24,359 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 18 states. [2018-10-14 16:18:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:24,811 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-14 16:18:24,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-14 16:18:24,811 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2018-10-14 16:18:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:24,812 INFO L225 Difference]: With dead ends: 174 [2018-10-14 16:18:24,812 INFO L226 Difference]: Without dead ends: 174 [2018-10-14 16:18:24,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=601, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-14 16:18:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2018-10-14 16:18:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-14 16:18:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-14 16:18:24,816 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 168 [2018-10-14 16:18:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:24,817 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-14 16:18:24,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-14 16:18:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-14 16:18:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-14 16:18:24,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:24,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:24,819 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:24,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2137606659, now seen corresponding path program 15 times [2018-10-14 16:18:24,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:25,074 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 16:18:25,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:25,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:18:25,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:18:25,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:18:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:18:25,076 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 19 states. [2018-10-14 16:18:25,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:25,447 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-14 16:18:25,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-14 16:18:25,447 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 171 [2018-10-14 16:18:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:25,448 INFO L225 Difference]: With dead ends: 177 [2018-10-14 16:18:25,448 INFO L226 Difference]: Without dead ends: 177 [2018-10-14 16:18:25,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=681, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-14 16:18:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2018-10-14 16:18:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-14 16:18:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-14 16:18:25,452 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 171 [2018-10-14 16:18:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:25,452 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-14 16:18:25,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:18:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-14 16:18:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-14 16:18:25,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:25,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:25,455 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:25,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1678759135, now seen corresponding path program 16 times [2018-10-14 16:18:25,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:25,790 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 16:18:25,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:25,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:18:25,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:18:25,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:18:25,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:18:25,792 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 20 states. [2018-10-14 16:18:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:26,223 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-14 16:18:26,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:18:26,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 174 [2018-10-14 16:18:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:26,226 INFO L225 Difference]: With dead ends: 180 [2018-10-14 16:18:26,226 INFO L226 Difference]: Without dead ends: 180 [2018-10-14 16:18:26,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=494, Invalid=766, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-14 16:18:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2018-10-14 16:18:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-14 16:18:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-14 16:18:26,231 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 174 [2018-10-14 16:18:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:26,231 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-14 16:18:26,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:18:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-14 16:18:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-14 16:18:26,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:26,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:26,233 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:26,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1342131523, now seen corresponding path program 17 times [2018-10-14 16:18:26,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:26,982 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 16:18:26,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:26,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:18:26,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:18:26,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:18:26,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:18:26,984 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 21 states. [2018-10-14 16:18:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:27,474 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-14 16:18:27,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-14 16:18:27,474 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 177 [2018-10-14 16:18:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:27,476 INFO L225 Difference]: With dead ends: 183 [2018-10-14 16:18:27,476 INFO L226 Difference]: Without dead ends: 183 [2018-10-14 16:18:27,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=550, Invalid=856, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-14 16:18:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2018-10-14 16:18:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-14 16:18:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-14 16:18:27,480 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 177 [2018-10-14 16:18:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:27,480 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-14 16:18:27,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:18:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-14 16:18:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-14 16:18:27,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:27,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:27,482 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:27,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash -48996383, now seen corresponding path program 18 times [2018-10-14 16:18:27,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:27,979 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 16:18:27,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:27,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:18:27,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:18:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:18:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:18:27,981 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 22 states. [2018-10-14 16:18:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:28,477 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-14 16:18:28,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-14 16:18:28,478 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 180 [2018-10-14 16:18:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:28,479 INFO L225 Difference]: With dead ends: 186 [2018-10-14 16:18:28,479 INFO L226 Difference]: Without dead ends: 186 [2018-10-14 16:18:28,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:18:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-14 16:18:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2018-10-14 16:18:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:18:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-14 16:18:28,485 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 180 [2018-10-14 16:18:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:28,485 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-14 16:18:28,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:18:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-14 16:18:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-14 16:18:28,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:28,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:28,487 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:28,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1001004925, now seen corresponding path program 19 times [2018-10-14 16:18:28,489 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:30,369 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 16:18:30,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:30,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:18:30,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:18:30,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:18:30,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:18:30,371 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 23 states. [2018-10-14 16:18:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:30,850 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-14 16:18:30,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:18:30,850 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 183 [2018-10-14 16:18:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:30,851 INFO L225 Difference]: With dead ends: 189 [2018-10-14 16:18:30,851 INFO L226 Difference]: Without dead ends: 189 [2018-10-14 16:18:30,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=671, Invalid=1051, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:18:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-14 16:18:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2018-10-14 16:18:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-14 16:18:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-14 16:18:30,855 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 183 [2018-10-14 16:18:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:30,855 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-14 16:18:30,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:18:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-14 16:18:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:18:30,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:30,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:30,857 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:30,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1676543137, now seen corresponding path program 20 times [2018-10-14 16:18:30,858 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:31,526 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 16:18:31,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:31,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:18:31,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:18:31,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:18:31,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:18:31,528 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 24 states. [2018-10-14 16:18:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:32,058 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-14 16:18:32,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-14 16:18:32,058 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 186 [2018-10-14 16:18:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:32,059 INFO L225 Difference]: With dead ends: 192 [2018-10-14 16:18:32,059 INFO L226 Difference]: Without dead ends: 192 [2018-10-14 16:18:32,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=1156, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:18:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-14 16:18:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2018-10-14 16:18:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-14 16:18:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-14 16:18:32,064 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 186 [2018-10-14 16:18:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:32,065 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-14 16:18:32,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:18:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-14 16:18:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-14 16:18:32,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:32,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:32,066 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:32,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:32,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1916730429, now seen corresponding path program 21 times [2018-10-14 16:18:32,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:33,005 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 16:18:33,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:33,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-14 16:18:33,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-14 16:18:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-14 16:18:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:18:33,007 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 25 states. [2018-10-14 16:18:33,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:33,531 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 16:18:33,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:18:33,534 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 189 [2018-10-14 16:18:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:33,535 INFO L225 Difference]: With dead ends: 195 [2018-10-14 16:18:33,535 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 16:18:33,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=804, Invalid=1266, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:18:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 16:18:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2018-10-14 16:18:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-14 16:18:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-14 16:18:33,540 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 189 [2018-10-14 16:18:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:33,540 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-14 16:18:33,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-14 16:18:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-14 16:18:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-14 16:18:33,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:33,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:33,542 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:33,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:33,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1364649631, now seen corresponding path program 22 times [2018-10-14 16:18:33,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:34,669 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 16:18:34,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:34,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-14 16:18:34,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-14 16:18:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-14 16:18:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2018-10-14 16:18:34,671 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 26 states. [2018-10-14 16:18:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:35,363 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-14 16:18:35,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:18:35,363 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 192 [2018-10-14 16:18:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:35,364 INFO L225 Difference]: With dead ends: 198 [2018-10-14 16:18:35,364 INFO L226 Difference]: Without dead ends: 198 [2018-10-14 16:18:35,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=875, Invalid=1381, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:18:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-14 16:18:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2018-10-14 16:18:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-14 16:18:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-14 16:18:35,369 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 192 [2018-10-14 16:18:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:35,369 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-14 16:18:35,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-14 16:18:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-14 16:18:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-14 16:18:35,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:35,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:35,371 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:35,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 244627203, now seen corresponding path program 23 times [2018-10-14 16:18:35,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:35,867 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 16:18:35,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:35,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 16:18:35,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 16:18:35,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 16:18:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:18:35,869 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 27 states. [2018-10-14 16:18:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:36,497 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-14 16:18:36,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-14 16:18:36,505 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 195 [2018-10-14 16:18:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:36,506 INFO L225 Difference]: With dead ends: 201 [2018-10-14 16:18:36,506 INFO L226 Difference]: Without dead ends: 201 [2018-10-14 16:18:36,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=949, Invalid=1501, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:18:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-14 16:18:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2018-10-14 16:18:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-14 16:18:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-14 16:18:36,511 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 195 [2018-10-14 16:18:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:36,511 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-14 16:18:36,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 16:18:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-14 16:18:36,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-14 16:18:36,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:36,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:36,513 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:36,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:36,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1785830945, now seen corresponding path program 24 times [2018-10-14 16:18:36,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:37,785 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 16:18:37,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:37,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-14 16:18:37,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:18:37,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:18:37,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:18:37,787 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 28 states. [2018-10-14 16:18:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:38,379 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-14 16:18:38,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:18:38,379 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 198 [2018-10-14 16:18:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:38,380 INFO L225 Difference]: With dead ends: 204 [2018-10-14 16:18:38,380 INFO L226 Difference]: Without dead ends: 204 [2018-10-14 16:18:38,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1026, Invalid=1626, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:18:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-14 16:18:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2018-10-14 16:18:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-14 16:18:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-14 16:18:38,384 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 198 [2018-10-14 16:18:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:38,384 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-14 16:18:38,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:18:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-14 16:18:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-14 16:18:38,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:38,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:38,385 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:38,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1708852669, now seen corresponding path program 25 times [2018-10-14 16:18:38,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:38,866 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 16:18:38,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:38,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-14 16:18:38,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-14 16:18:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-14 16:18:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2018-10-14 16:18:38,868 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 29 states. [2018-10-14 16:18:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:39,912 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-14 16:18:39,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:18:39,919 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 201 [2018-10-14 16:18:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:39,920 INFO L225 Difference]: With dead ends: 207 [2018-10-14 16:18:39,920 INFO L226 Difference]: Without dead ends: 207 [2018-10-14 16:18:39,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1106, Invalid=1756, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:18:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-14 16:18:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2018-10-14 16:18:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-14 16:18:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-14 16:18:39,925 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 201 [2018-10-14 16:18:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:39,925 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-14 16:18:39,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-14 16:18:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-14 16:18:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-14 16:18:39,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:39,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:39,927 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:39,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1821142303, now seen corresponding path program 26 times [2018-10-14 16:18:39,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:41,192 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 16:18:41,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:41,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-14 16:18:41,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-14 16:18:41,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-14 16:18:41,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2018-10-14 16:18:41,194 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 30 states. [2018-10-14 16:18:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:42,080 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-14 16:18:42,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-14 16:18:42,080 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 204 [2018-10-14 16:18:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:42,081 INFO L225 Difference]: With dead ends: 210 [2018-10-14 16:18:42,082 INFO L226 Difference]: Without dead ends: 210 [2018-10-14 16:18:42,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1189, Invalid=1891, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:18:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-14 16:18:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2018-10-14 16:18:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-14 16:18:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-14 16:18:42,086 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 204 [2018-10-14 16:18:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:42,087 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-14 16:18:42,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-14 16:18:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-14 16:18:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-14 16:18:42,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:42,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:42,088 INFO L424 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:42,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:42,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1262105213, now seen corresponding path program 27 times [2018-10-14 16:18:42,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:42,788 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 16:18:42,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:42,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:18:42,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:18:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:18:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:18:42,790 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 31 states. [2018-10-14 16:18:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:43,464 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-14 16:18:43,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-14 16:18:43,464 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 207 [2018-10-14 16:18:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:43,465 INFO L225 Difference]: With dead ends: 213 [2018-10-14 16:18:43,465 INFO L226 Difference]: Without dead ends: 213 [2018-10-14 16:18:43,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=2031, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:18:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-14 16:18:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2018-10-14 16:18:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-14 16:18:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-14 16:18:43,470 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 207 [2018-10-14 16:18:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:43,470 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-14 16:18:43,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:18:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-14 16:18:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-14 16:18:43,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:43,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:43,472 INFO L424 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:43,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1423636385, now seen corresponding path program 28 times [2018-10-14 16:18:43,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:44,070 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 16:18:44,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:44,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:18:44,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:18:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:18:44,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:18:44,072 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 32 states. [2018-10-14 16:18:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:45,060 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-14 16:18:45,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-14 16:18:45,066 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 210 [2018-10-14 16:18:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:45,067 INFO L225 Difference]: With dead ends: 216 [2018-10-14 16:18:45,067 INFO L226 Difference]: Without dead ends: 216 [2018-10-14 16:18:45,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1364, Invalid=2176, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:18:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-14 16:18:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2018-10-14 16:18:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-14 16:18:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-14 16:18:45,072 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 210 [2018-10-14 16:18:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:45,072 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-14 16:18:45,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:18:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-14 16:18:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-14 16:18:45,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:45,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:45,074 INFO L424 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:45,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1405825219, now seen corresponding path program 29 times [2018-10-14 16:18:45,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:45,717 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 16:18:45,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:45,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:18:45,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:18:45,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:18:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:18:45,719 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 33 states. [2018-10-14 16:18:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:46,614 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-14 16:18:46,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-14 16:18:46,614 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 213 [2018-10-14 16:18:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:46,615 INFO L225 Difference]: With dead ends: 219 [2018-10-14 16:18:46,616 INFO L226 Difference]: Without dead ends: 219 [2018-10-14 16:18:46,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1456, Invalid=2326, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:18:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-14 16:18:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2018-10-14 16:18:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-14 16:18:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-14 16:18:46,620 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 213 [2018-10-14 16:18:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:46,621 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-14 16:18:46,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:18:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-14 16:18:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-14 16:18:46,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:46,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:46,622 INFO L424 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:46,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:46,623 INFO L82 PathProgramCache]: Analyzing trace with hash -925643679, now seen corresponding path program 30 times [2018-10-14 16:18:46,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:47,283 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 16:18:47,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:47,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-14 16:18:47,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-14 16:18:47,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-14 16:18:47,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-10-14 16:18:47,285 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 34 states. [2018-10-14 16:18:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:48,193 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-14 16:18:48,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:18:48,193 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2018-10-14 16:18:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:48,194 INFO L225 Difference]: With dead ends: 222 [2018-10-14 16:18:48,194 INFO L226 Difference]: Without dead ends: 222 [2018-10-14 16:18:48,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1551, Invalid=2481, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:18:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-14 16:18:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2018-10-14 16:18:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-14 16:18:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-14 16:18:48,198 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 216 [2018-10-14 16:18:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:48,199 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-14 16:18:48,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-14 16:18:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-14 16:18:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-14 16:18:48,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:48,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:48,200 INFO L424 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:48,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 495526915, now seen corresponding path program 31 times [2018-10-14 16:18:48,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:49,154 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 16:18:49,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:49,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-14 16:18:49,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-14 16:18:49,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-14 16:18:49,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2018-10-14 16:18:49,156 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 35 states. [2018-10-14 16:18:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:50,396 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-14 16:18:50,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 16:18:50,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 219 [2018-10-14 16:18:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:50,398 INFO L225 Difference]: With dead ends: 225 [2018-10-14 16:18:50,398 INFO L226 Difference]: Without dead ends: 225 [2018-10-14 16:18:50,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1649, Invalid=2641, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:18:50,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-14 16:18:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2018-10-14 16:18:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-14 16:18:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-14 16:18:50,403 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 219 [2018-10-14 16:18:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:50,403 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-14 16:18:50,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-14 16:18:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-14 16:18:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-14 16:18:50,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:50,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:50,406 INFO L424 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:50,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:50,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1198911199, now seen corresponding path program 32 times [2018-10-14 16:18:50,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:51,172 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 16:18:51,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:51,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:18:51,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:18:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:18:51,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:18:51,174 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 36 states. [2018-10-14 16:18:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:52,216 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-14 16:18:52,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-14 16:18:52,217 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 222 [2018-10-14 16:18:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:52,218 INFO L225 Difference]: With dead ends: 228 [2018-10-14 16:18:52,218 INFO L226 Difference]: Without dead ends: 228 [2018-10-14 16:18:52,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1750, Invalid=2806, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:18:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-14 16:18:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2018-10-14 16:18:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-14 16:18:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-14 16:18:52,221 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 222 [2018-10-14 16:18:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-14 16:18:52,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:18:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-14 16:18:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-14 16:18:52,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:52,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:52,223 INFO L424 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:52,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:52,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1454135485, now seen corresponding path program 33 times [2018-10-14 16:18:52,224 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:53,018 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 16:18:53,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:53,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-14 16:18:53,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-14 16:18:53,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-14 16:18:53,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2018-10-14 16:18:53,020 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 37 states. [2018-10-14 16:18:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:53,969 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-14 16:18:53,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-14 16:18:53,969 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 225 [2018-10-14 16:18:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:53,970 INFO L225 Difference]: With dead ends: 231 [2018-10-14 16:18:53,970 INFO L226 Difference]: Without dead ends: 231 [2018-10-14 16:18:53,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1854, Invalid=2976, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:18:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-14 16:18:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2018-10-14 16:18:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-14 16:18:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-14 16:18:53,975 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 225 [2018-10-14 16:18:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:53,975 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-14 16:18:53,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-14 16:18:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-14 16:18:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-14 16:18:53,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:53,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:53,977 INFO L424 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:53,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1546241505, now seen corresponding path program 34 times [2018-10-14 16:18:53,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:55,183 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 16:18:55,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:55,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-14 16:18:55,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-14 16:18:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-14 16:18:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=737, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:18:55,184 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 38 states. [2018-10-14 16:18:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:56,279 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-14 16:18:56,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-14 16:18:56,280 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 228 [2018-10-14 16:18:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:56,281 INFO L225 Difference]: With dead ends: 234 [2018-10-14 16:18:56,281 INFO L226 Difference]: Without dead ends: 234 [2018-10-14 16:18:56,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1961, Invalid=3151, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:18:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-14 16:18:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2018-10-14 16:18:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-14 16:18:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-14 16:18:56,284 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 228 [2018-10-14 16:18:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:56,284 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-14 16:18:56,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-14 16:18:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-14 16:18:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-14 16:18:56,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:56,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:56,286 INFO L424 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:56,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1082213757, now seen corresponding path program 35 times [2018-10-14 16:18:56,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:18:57,229 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 16:18:57,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:18:57,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:18:57,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:18:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:18:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=776, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:18:57,231 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 39 states. [2018-10-14 16:18:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:18:59,198 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-14 16:18:59,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:18:59,198 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 231 [2018-10-14 16:18:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:18:59,199 INFO L225 Difference]: With dead ends: 237 [2018-10-14 16:18:59,199 INFO L226 Difference]: Without dead ends: 237 [2018-10-14 16:18:59,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2071, Invalid=3331, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:18:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-14 16:18:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2018-10-14 16:18:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-14 16:18:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-14 16:18:59,203 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 231 [2018-10-14 16:18:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:18:59,203 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-14 16:18:59,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:18:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-14 16:18:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-14 16:18:59,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:18:59,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:18:59,205 INFO L424 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:18:59,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:18:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash 450816673, now seen corresponding path program 36 times [2018-10-14 16:18:59,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:18:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:00,302 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 16:19:00,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:00,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-14 16:19:00,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-14 16:19:00,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-14 16:19:00,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:19:00,304 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 40 states. [2018-10-14 16:19:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:01,536 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-14 16:19:01,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-14 16:19:01,536 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 234 [2018-10-14 16:19:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:01,538 INFO L225 Difference]: With dead ends: 240 [2018-10-14 16:19:01,538 INFO L226 Difference]: Without dead ends: 240 [2018-10-14 16:19:01,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2184, Invalid=3516, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:19:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-14 16:19:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2018-10-14 16:19:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-14 16:19:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-14 16:19:01,542 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 234 [2018-10-14 16:19:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:01,543 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-14 16:19:01,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-14 16:19:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-14 16:19:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-14 16:19:01,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:01,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:01,547 INFO L424 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:01,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1721868861, now seen corresponding path program 37 times [2018-10-14 16:19:01,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:02,466 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 16:19:02,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:02,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:19:02,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:19:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:19:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=857, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:19:02,468 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 41 states. [2018-10-14 16:19:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:03,586 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-14 16:19:03,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:19:03,586 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 237 [2018-10-14 16:19:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:03,587 INFO L225 Difference]: With dead ends: 243 [2018-10-14 16:19:03,587 INFO L226 Difference]: Without dead ends: 243 [2018-10-14 16:19:03,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2300, Invalid=3706, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:19:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-14 16:19:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2018-10-14 16:19:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-14 16:19:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-14 16:19:03,590 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 237 [2018-10-14 16:19:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:03,591 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-14 16:19:03,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:19:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-14 16:19:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-14 16:19:03,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:03,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:03,592 INFO L424 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:03,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1255505761, now seen corresponding path program 38 times [2018-10-14 16:19:03,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:04,495 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 16:19:04,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:04,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-14 16:19:04,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-14 16:19:04,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-14 16:19:04,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=899, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:19:04,497 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 42 states. [2018-10-14 16:19:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:06,009 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-14 16:19:06,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-14 16:19:06,010 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 240 [2018-10-14 16:19:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:06,011 INFO L225 Difference]: With dead ends: 246 [2018-10-14 16:19:06,011 INFO L226 Difference]: Without dead ends: 246 [2018-10-14 16:19:06,012 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 16:19:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-14 16:19:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2018-10-14 16:19:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-14 16:19:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-14 16:19:06,014 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 240 [2018-10-14 16:19:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:06,014 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-14 16:19:06,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-14 16:19:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-14 16:19:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-14 16:19:06,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:06,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:06,016 INFO L424 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:06,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 558272771, now seen corresponding path program 39 times [2018-10-14 16:19:06,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:06,962 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 16:19:06,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:06,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:19:06,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:19:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:19:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=942, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:19:06,963 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 43 states. [2018-10-14 16:19:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:08,340 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-14 16:19:08,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-14 16:19:08,340 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 243 [2018-10-14 16:19:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:08,341 INFO L225 Difference]: With dead ends: 249 [2018-10-14 16:19:08,341 INFO L226 Difference]: Without dead ends: 249 [2018-10-14 16:19:08,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2541, Invalid=4101, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:19:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-14 16:19:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2018-10-14 16:19:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-14 16:19:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-14 16:19:08,346 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 243 [2018-10-14 16:19:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:08,347 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-14 16:19:08,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:19:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-14 16:19:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-14 16:19:08,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:08,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:08,349 INFO L424 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:08,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:08,349 INFO L82 PathProgramCache]: Analyzing trace with hash -247888863, now seen corresponding path program 40 times [2018-10-14 16:19:08,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:09,374 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 16:19:09,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:09,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:19:09,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:19:09,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:19:09,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=986, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:19:09,376 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 44 states. [2018-10-14 16:19:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:11,018 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-14 16:19:11,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:19:11,019 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 246 [2018-10-14 16:19:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:11,020 INFO L225 Difference]: With dead ends: 252 [2018-10-14 16:19:11,020 INFO L226 Difference]: Without dead ends: 252 [2018-10-14 16:19:11,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2666, Invalid=4306, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:19:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-14 16:19:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2018-10-14 16:19:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-14 16:19:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-14 16:19:11,024 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 246 [2018-10-14 16:19:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:11,025 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-14 16:19:11,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:19:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-14 16:19:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-14 16:19:11,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:11,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:11,027 INFO L424 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:11,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash 847991875, now seen corresponding path program 41 times [2018-10-14 16:19:11,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:12,011 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 16:19:12,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:12,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-14 16:19:12,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-14 16:19:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-14 16:19:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=1031, Unknown=0, NotChecked=0, Total=1980 [2018-10-14 16:19:12,012 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 45 states. [2018-10-14 16:19:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:13,588 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-14 16:19:13,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-14 16:19:13,588 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 249 [2018-10-14 16:19:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:13,589 INFO L225 Difference]: With dead ends: 255 [2018-10-14 16:19:13,589 INFO L226 Difference]: Without dead ends: 255 [2018-10-14 16:19:13,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2794, Invalid=4516, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:19:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-14 16:19:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2018-10-14 16:19:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-14 16:19:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-14 16:19:13,593 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 249 [2018-10-14 16:19:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:13,593 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-14 16:19:13,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-14 16:19:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-14 16:19:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-14 16:19:13,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:13,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:13,594 INFO L424 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:13,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2110326559, now seen corresponding path program 42 times [2018-10-14 16:19:13,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:14,622 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 16:19:14,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:14,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-14 16:19:14,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-14 16:19:14,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-14 16:19:14,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=1077, Unknown=0, NotChecked=0, Total=2070 [2018-10-14 16:19:14,624 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 46 states. [2018-10-14 16:19:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:16,391 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-14 16:19:16,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:19:16,391 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 252 [2018-10-14 16:19:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:16,392 INFO L225 Difference]: With dead ends: 258 [2018-10-14 16:19:16,392 INFO L226 Difference]: Without dead ends: 258 [2018-10-14 16:19:16,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2925, Invalid=4731, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:19:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-14 16:19:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2018-10-14 16:19:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-14 16:19:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-14 16:19:16,396 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 252 [2018-10-14 16:19:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:16,396 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-14 16:19:16,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-14 16:19:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-14 16:19:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-14 16:19:16,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:16,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:16,398 INFO L424 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:16,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:16,398 INFO L82 PathProgramCache]: Analyzing trace with hash -645879933, now seen corresponding path program 43 times [2018-10-14 16:19:16,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:17,559 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 16:19:17,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:17,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:19:17,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:19:17,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:19:17,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=1124, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:19:17,561 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 47 states. [2018-10-14 16:19:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:19,056 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-14 16:19:19,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-14 16:19:19,065 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 255 [2018-10-14 16:19:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:19,066 INFO L225 Difference]: With dead ends: 261 [2018-10-14 16:19:19,066 INFO L226 Difference]: Without dead ends: 261 [2018-10-14 16:19:19,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3059, Invalid=4951, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:19:19,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-14 16:19:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2018-10-14 16:19:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-14 16:19:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-14 16:19:19,071 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 255 [2018-10-14 16:19:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:19,071 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-14 16:19:19,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:19:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-14 16:19:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-14 16:19:19,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:19,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:19,073 INFO L424 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:19,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:19,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1594237535, now seen corresponding path program 44 times [2018-10-14 16:19:19,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:20,691 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 16:19:20,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:20,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-14 16:19:20,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-14 16:19:20,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-14 16:19:20,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=1172, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:19:20,692 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 48 states. [2018-10-14 16:19:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:22,300 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-10-14 16:19:22,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-14 16:19:22,301 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 258 [2018-10-14 16:19:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:22,302 INFO L225 Difference]: With dead ends: 264 [2018-10-14 16:19:22,302 INFO L226 Difference]: Without dead ends: 264 [2018-10-14 16:19:22,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3196, Invalid=5176, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:19:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-14 16:19:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2018-10-14 16:19:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-14 16:19:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-14 16:19:22,306 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 258 [2018-10-14 16:19:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:22,306 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-14 16:19:22,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-14 16:19:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-14 16:19:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-14 16:19:22,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:22,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:22,308 INFO L424 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:22,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1820685629, now seen corresponding path program 45 times [2018-10-14 16:19:22,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:23,609 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 16:19:23,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:23,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-14 16:19:23,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-14 16:19:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-14 16:19:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=1221, Unknown=0, NotChecked=0, Total=2352 [2018-10-14 16:19:23,611 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 49 states. [2018-10-14 16:19:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:25,131 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-14 16:19:25,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-14 16:19:25,132 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 261 [2018-10-14 16:19:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:25,133 INFO L225 Difference]: With dead ends: 267 [2018-10-14 16:19:25,133 INFO L226 Difference]: Without dead ends: 267 [2018-10-14 16:19:25,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3336, Invalid=5406, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:19:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-14 16:19:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2018-10-14 16:19:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-14 16:19:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-14 16:19:25,137 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 261 [2018-10-14 16:19:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:25,137 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-14 16:19:25,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-14 16:19:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-14 16:19:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-14 16:19:25,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:25,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:25,139 INFO L424 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:25,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -542231967, now seen corresponding path program 46 times [2018-10-14 16:19:25,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:26,651 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 16:19:26,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:26,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-14 16:19:26,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-14 16:19:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-14 16:19:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:19:26,653 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 50 states. [2018-10-14 16:19:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:28,354 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2018-10-14 16:19:28,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-14 16:19:28,354 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 264 [2018-10-14 16:19:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:28,355 INFO L225 Difference]: With dead ends: 270 [2018-10-14 16:19:28,355 INFO L226 Difference]: Without dead ends: 270 [2018-10-14 16:19:28,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3479, Invalid=5641, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:19:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-14 16:19:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2018-10-14 16:19:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-10-14 16:19:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-10-14 16:19:28,359 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 264 [2018-10-14 16:19:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:28,360 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-10-14 16:19:28,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-14 16:19:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-10-14 16:19:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-14 16:19:28,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:28,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:28,361 INFO L424 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:28,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:28,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1899168253, now seen corresponding path program 47 times [2018-10-14 16:19:28,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:29,728 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 16:19:29,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:29,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-14 16:19:29,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-14 16:19:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-14 16:19:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=1322, Unknown=0, NotChecked=0, Total=2550 [2018-10-14 16:19:29,730 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 51 states. [2018-10-14 16:19:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:31,683 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-14 16:19:31,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-14 16:19:31,683 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 267 [2018-10-14 16:19:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:31,684 INFO L225 Difference]: With dead ends: 273 [2018-10-14 16:19:31,684 INFO L226 Difference]: Without dead ends: 273 [2018-10-14 16:19:31,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3625, Invalid=5881, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:19:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-14 16:19:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2018-10-14 16:19:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-14 16:19:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-14 16:19:31,688 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 267 [2018-10-14 16:19:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:31,688 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-14 16:19:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-14 16:19:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-14 16:19:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-14 16:19:31,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:31,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:31,690 INFO L424 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:31,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2139092769, now seen corresponding path program 48 times [2018-10-14 16:19:31,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:33,044 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 16:19:33,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:33,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-14 16:19:33,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-14 16:19:33,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-14 16:19:33,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=1374, Unknown=0, NotChecked=0, Total=2652 [2018-10-14 16:19:33,046 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 52 states. [2018-10-14 16:19:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:34,882 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2018-10-14 16:19:34,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-14 16:19:34,883 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 270 [2018-10-14 16:19:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:34,884 INFO L225 Difference]: With dead ends: 276 [2018-10-14 16:19:34,884 INFO L226 Difference]: Without dead ends: 276 [2018-10-14 16:19:34,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3774, Invalid=6126, Unknown=0, NotChecked=0, Total=9900 [2018-10-14 16:19:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-14 16:19:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2018-10-14 16:19:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-14 16:19:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-10-14 16:19:34,888 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 270 [2018-10-14 16:19:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:34,888 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-10-14 16:19:34,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-14 16:19:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-10-14 16:19:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-14 16:19:34,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:34,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:34,890 INFO L424 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:34,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash -355729085, now seen corresponding path program 49 times [2018-10-14 16:19:34,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:36,742 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 16:19:36,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:36,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-14 16:19:36,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-14 16:19:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-14 16:19:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=1427, Unknown=0, NotChecked=0, Total=2756 [2018-10-14 16:19:36,744 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 53 states. [2018-10-14 16:19:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:38,646 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-14 16:19:38,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:19:38,646 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 273 [2018-10-14 16:19:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:38,647 INFO L225 Difference]: With dead ends: 279 [2018-10-14 16:19:38,648 INFO L226 Difference]: Without dead ends: 279 [2018-10-14 16:19:38,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3926, Invalid=6376, Unknown=0, NotChecked=0, Total=10302 [2018-10-14 16:19:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-14 16:19:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2018-10-14 16:19:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-14 16:19:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-10-14 16:19:38,654 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 273 [2018-10-14 16:19:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:38,654 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-10-14 16:19:38,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-14 16:19:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-10-14 16:19:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-14 16:19:38,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:38,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:38,656 INFO L424 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:38,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash 815475681, now seen corresponding path program 50 times [2018-10-14 16:19:38,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:39,930 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 16:19:39,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:39,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-14 16:19:39,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-14 16:19:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-14 16:19:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2018-10-14 16:19:39,932 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 54 states. [2018-10-14 16:19:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:42,019 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2018-10-14 16:19:42,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-14 16:19:42,019 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 276 [2018-10-14 16:19:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:42,021 INFO L225 Difference]: With dead ends: 282 [2018-10-14 16:19:42,021 INFO L226 Difference]: Without dead ends: 282 [2018-10-14 16:19:42,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4081, Invalid=6631, Unknown=0, NotChecked=0, Total=10712 [2018-10-14 16:19:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-14 16:19:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2018-10-14 16:19:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-14 16:19:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-10-14 16:19:42,024 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 276 [2018-10-14 16:19:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:42,025 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-10-14 16:19:42,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-14 16:19:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-10-14 16:19:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-14 16:19:42,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:42,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:42,026 INFO L424 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:42,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash -137653117, now seen corresponding path program 51 times [2018-10-14 16:19:42,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:43,532 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 16:19:43,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:43,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-14 16:19:43,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-14 16:19:43,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-14 16:19:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1434, Invalid=1536, Unknown=0, NotChecked=0, Total=2970 [2018-10-14 16:19:43,534 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 55 states. [2018-10-14 16:19:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:45,444 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-14 16:19:45,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:19:45,444 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 279 [2018-10-14 16:19:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:45,445 INFO L225 Difference]: With dead ends: 285 [2018-10-14 16:19:45,445 INFO L226 Difference]: Without dead ends: 285 [2018-10-14 16:19:45,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4239, Invalid=6891, Unknown=0, NotChecked=0, Total=11130 [2018-10-14 16:19:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-10-14 16:19:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2018-10-14 16:19:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-14 16:19:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-14 16:19:45,449 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 279 [2018-10-14 16:19:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:45,449 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-14 16:19:45,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-14 16:19:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-14 16:19:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-14 16:19:45,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:45,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:45,451 INFO L424 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:45,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -768880479, now seen corresponding path program 52 times [2018-10-14 16:19:45,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:47,092 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 16:19:47,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:47,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:19:47,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:19:47,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:19:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=1592, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:19:47,094 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 56 states. [2018-10-14 16:19:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:49,179 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2018-10-14 16:19:49,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:19:49,180 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 282 [2018-10-14 16:19:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:49,181 INFO L225 Difference]: With dead ends: 288 [2018-10-14 16:19:49,181 INFO L226 Difference]: Without dead ends: 288 [2018-10-14 16:19:49,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4400, Invalid=7156, Unknown=0, NotChecked=0, Total=11556 [2018-10-14 16:19:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-14 16:19:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2018-10-14 16:19:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-14 16:19:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-10-14 16:19:49,186 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 282 [2018-10-14 16:19:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:49,186 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-10-14 16:19:49,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:19:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-10-14 16:19:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-14 16:19:49,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:49,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:49,189 INFO L424 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:49,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1998567363, now seen corresponding path program 53 times [2018-10-14 16:19:49,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:50,722 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 16:19:50,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:50,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:19:50,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:19:50,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:19:50,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=1649, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:19:50,724 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 57 states. [2018-10-14 16:19:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:53,118 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-14 16:19:53,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-14 16:19:53,118 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 285 [2018-10-14 16:19:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:53,120 INFO L225 Difference]: With dead ends: 291 [2018-10-14 16:19:53,120 INFO L226 Difference]: Without dead ends: 291 [2018-10-14 16:19:53,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4564, Invalid=7426, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 16:19:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-14 16:19:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2018-10-14 16:19:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-14 16:19:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-10-14 16:19:53,123 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 285 [2018-10-14 16:19:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:53,123 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-10-14 16:19:53,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:19:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-10-14 16:19:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-14 16:19:53,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:53,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:53,125 INFO L424 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:53,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 845014369, now seen corresponding path program 54 times [2018-10-14 16:19:53,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:54,591 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 16:19:54,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:54,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-14 16:19:54,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-14 16:19:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-14 16:19:54,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=1707, Unknown=0, NotChecked=0, Total=3306 [2018-10-14 16:19:54,593 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 58 states. [2018-10-14 16:19:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:19:57,068 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-10-14 16:19:57,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-14 16:19:57,069 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 288 [2018-10-14 16:19:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:19:57,070 INFO L225 Difference]: With dead ends: 294 [2018-10-14 16:19:57,070 INFO L226 Difference]: Without dead ends: 294 [2018-10-14 16:19:57,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4731, Invalid=7701, Unknown=0, NotChecked=0, Total=12432 [2018-10-14 16:19:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-14 16:19:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2018-10-14 16:19:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-10-14 16:19:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-10-14 16:19:57,073 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 288 [2018-10-14 16:19:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:19:57,073 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-10-14 16:19:57,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-14 16:19:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-10-14 16:19:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-14 16:19:57,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:19:57,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:19:57,075 INFO L424 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:19:57,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:19:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash -618894589, now seen corresponding path program 55 times [2018-10-14 16:19:57,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:19:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:19:58,574 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 16:19:58,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:19:58,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-14 16:19:58,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-14 16:19:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-14 16:19:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=1766, Unknown=0, NotChecked=0, Total=3422 [2018-10-14 16:19:58,576 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 59 states. [2018-10-14 16:20:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:00,789 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-14 16:20:00,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:20:00,790 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 291 [2018-10-14 16:20:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:00,791 INFO L225 Difference]: With dead ends: 297 [2018-10-14 16:20:00,791 INFO L226 Difference]: Without dead ends: 297 [2018-10-14 16:20:00,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4901, Invalid=7981, Unknown=0, NotChecked=0, Total=12882 [2018-10-14 16:20:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-10-14 16:20:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2018-10-14 16:20:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-14 16:20:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-14 16:20:00,794 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 291 [2018-10-14 16:20:00,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:00,794 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-14 16:20:00,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-14 16:20:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-14 16:20:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-14 16:20:00,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:00,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:00,795 INFO L424 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:00,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:00,796 INFO L82 PathProgramCache]: Analyzing trace with hash -832738783, now seen corresponding path program 56 times [2018-10-14 16:20:00,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:02,632 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 16:20:02,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:02,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-14 16:20:02,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-14 16:20:02,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-14 16:20:02,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1714, Invalid=1826, Unknown=0, NotChecked=0, Total=3540 [2018-10-14 16:20:02,634 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 60 states. [2018-10-14 16:20:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:05,042 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2018-10-14 16:20:05,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-14 16:20:05,042 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 294 [2018-10-14 16:20:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:05,043 INFO L225 Difference]: With dead ends: 300 [2018-10-14 16:20:05,043 INFO L226 Difference]: Without dead ends: 300 [2018-10-14 16:20:05,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5074, Invalid=8266, Unknown=0, NotChecked=0, Total=13340 [2018-10-14 16:20:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-10-14 16:20:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2018-10-14 16:20:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-10-14 16:20:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-10-14 16:20:05,047 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 294 [2018-10-14 16:20:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:05,047 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-10-14 16:20:05,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-14 16:20:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-10-14 16:20:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-14 16:20:05,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:05,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:05,048 INFO L424 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:05,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:05,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2028622269, now seen corresponding path program 57 times [2018-10-14 16:20:05,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:06,916 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 16:20:06,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:06,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-14 16:20:06,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-14 16:20:06,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-14 16:20:06,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=1887, Unknown=0, NotChecked=0, Total=3660 [2018-10-14 16:20:06,918 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 61 states. [2018-10-14 16:20:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:09,227 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-10-14 16:20:09,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-14 16:20:09,228 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 297 [2018-10-14 16:20:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:09,229 INFO L225 Difference]: With dead ends: 303 [2018-10-14 16:20:09,229 INFO L226 Difference]: Without dead ends: 303 [2018-10-14 16:20:09,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5250, Invalid=8556, Unknown=0, NotChecked=0, Total=13806 [2018-10-14 16:20:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-14 16:20:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2018-10-14 16:20:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-14 16:20:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-10-14 16:20:09,233 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 297 [2018-10-14 16:20:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:09,233 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-10-14 16:20:09,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-14 16:20:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-10-14 16:20:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-14 16:20:09,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:09,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:09,234 INFO L424 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:09,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1839833375, now seen corresponding path program 58 times [2018-10-14 16:20:09,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:11,305 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 16:20:11,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:11,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:20:11,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:20:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:20:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1833, Invalid=1949, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:20:11,307 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 62 states. [2018-10-14 16:20:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:14,087 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2018-10-14 16:20:14,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-14 16:20:14,087 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 300 [2018-10-14 16:20:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:14,088 INFO L225 Difference]: With dead ends: 306 [2018-10-14 16:20:14,089 INFO L226 Difference]: Without dead ends: 306 [2018-10-14 16:20:14,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5429, Invalid=8851, Unknown=0, NotChecked=0, Total=14280 [2018-10-14 16:20:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-14 16:20:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2018-10-14 16:20:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-14 16:20:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-10-14 16:20:14,092 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 300 [2018-10-14 16:20:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:14,092 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-10-14 16:20:14,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:20:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-10-14 16:20:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-14 16:20:14,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:14,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:14,094 INFO L424 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:14,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:14,094 INFO L82 PathProgramCache]: Analyzing trace with hash 257917315, now seen corresponding path program 59 times [2018-10-14 16:20:14,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:15,805 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 16:20:15,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:15,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-14 16:20:15,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-14 16:20:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-14 16:20:15,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2012, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:20:15,807 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 63 states. [2018-10-14 16:20:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:18,705 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-14 16:20:18,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-14 16:20:18,705 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 303 [2018-10-14 16:20:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:18,707 INFO L225 Difference]: With dead ends: 309 [2018-10-14 16:20:18,707 INFO L226 Difference]: Without dead ends: 309 [2018-10-14 16:20:18,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5611, Invalid=9151, Unknown=0, NotChecked=0, Total=14762 [2018-10-14 16:20:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-14 16:20:18,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2018-10-14 16:20:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-14 16:20:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-14 16:20:18,710 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 303 [2018-10-14 16:20:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:18,710 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-14 16:20:18,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-14 16:20:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-14 16:20:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-14 16:20:18,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:18,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:18,712 INFO L424 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:18,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:18,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1720400991, now seen corresponding path program 60 times [2018-10-14 16:20:18,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:20,475 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 16:20:20,476 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:20,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-14 16:20:20,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-14 16:20:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-14 16:20:20,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1956, Invalid=2076, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:20:20,477 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 64 states. [2018-10-14 16:20:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:23,408 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2018-10-14 16:20:23,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-14 16:20:23,408 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 306 [2018-10-14 16:20:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:23,409 INFO L225 Difference]: With dead ends: 312 [2018-10-14 16:20:23,409 INFO L226 Difference]: Without dead ends: 312 [2018-10-14 16:20:23,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5796, Invalid=9456, Unknown=0, NotChecked=0, Total=15252 [2018-10-14 16:20:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-14 16:20:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2018-10-14 16:20:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-10-14 16:20:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-10-14 16:20:23,413 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 306 [2018-10-14 16:20:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:23,414 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-10-14 16:20:23,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-14 16:20:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-10-14 16:20:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-14 16:20:23,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:23,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:23,415 INFO L424 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:23,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2035147971, now seen corresponding path program 61 times [2018-10-14 16:20:23,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:25,375 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 16:20:25,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:25,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-14 16:20:25,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-14 16:20:25,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-14 16:20:25,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2019, Invalid=2141, Unknown=0, NotChecked=0, Total=4160 [2018-10-14 16:20:25,377 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 65 states. [2018-10-14 16:20:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:28,300 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-14 16:20:28,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-14 16:20:28,300 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 309 [2018-10-14 16:20:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:28,302 INFO L225 Difference]: With dead ends: 315 [2018-10-14 16:20:28,302 INFO L226 Difference]: Without dead ends: 315 [2018-10-14 16:20:28,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5984, Invalid=9766, Unknown=0, NotChecked=0, Total=15750 [2018-10-14 16:20:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-14 16:20:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2018-10-14 16:20:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-10-14 16:20:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-10-14 16:20:28,306 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 309 [2018-10-14 16:20:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:28,306 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-10-14 16:20:28,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-14 16:20:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-10-14 16:20:28,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-14 16:20:28,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:28,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:28,307 INFO L424 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:28,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:28,307 INFO L82 PathProgramCache]: Analyzing trace with hash -303785887, now seen corresponding path program 62 times [2018-10-14 16:20:28,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:30,134 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 16:20:30,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:30,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-14 16:20:30,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-14 16:20:30,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-14 16:20:30,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:20:30,135 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 66 states. [2018-10-14 16:20:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:33,111 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2018-10-14 16:20:33,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:20:33,112 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 312 [2018-10-14 16:20:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:33,113 INFO L225 Difference]: With dead ends: 318 [2018-10-14 16:20:33,113 INFO L226 Difference]: Without dead ends: 318 [2018-10-14 16:20:33,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6175, Invalid=10081, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:20:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-14 16:20:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2018-10-14 16:20:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-10-14 16:20:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-10-14 16:20:33,117 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 312 [2018-10-14 16:20:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:33,117 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-10-14 16:20:33,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-14 16:20:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-10-14 16:20:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-14 16:20:33,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:33,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:33,119 INFO L424 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:33,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2067060739, now seen corresponding path program 63 times [2018-10-14 16:20:33,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:35,212 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 16:20:35,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:35,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:20:35,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:20:35,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:20:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=2274, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:20:35,215 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 67 states. [2018-10-14 16:20:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:38,322 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-14 16:20:38,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-14 16:20:38,322 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 315 [2018-10-14 16:20:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:38,323 INFO L225 Difference]: With dead ends: 321 [2018-10-14 16:20:38,323 INFO L226 Difference]: Without dead ends: 321 [2018-10-14 16:20:38,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6369, Invalid=10401, Unknown=0, NotChecked=0, Total=16770 [2018-10-14 16:20:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-10-14 16:20:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2018-10-14 16:20:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-14 16:20:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-14 16:20:38,328 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 315 [2018-10-14 16:20:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:38,328 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-14 16:20:38,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:20:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-14 16:20:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-14 16:20:38,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:38,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:38,330 INFO L424 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:38,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:38,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1221713185, now seen corresponding path program 64 times [2018-10-14 16:20:38,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:40,341 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 16:20:40,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:40,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-14 16:20:40,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-14 16:20:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-14 16:20:40,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=2342, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:20:40,343 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 68 states. [2018-10-14 16:20:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:43,528 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2018-10-14 16:20:43,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-14 16:20:43,529 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 318 [2018-10-14 16:20:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:43,530 INFO L225 Difference]: With dead ends: 324 [2018-10-14 16:20:43,530 INFO L226 Difference]: Without dead ends: 324 [2018-10-14 16:20:43,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6566, Invalid=10726, Unknown=0, NotChecked=0, Total=17292 [2018-10-14 16:20:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-14 16:20:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2018-10-14 16:20:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-14 16:20:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-10-14 16:20:43,534 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 318 [2018-10-14 16:20:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:43,534 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-10-14 16:20:43,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-14 16:20:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-10-14 16:20:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-14 16:20:43,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:43,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:43,536 INFO L424 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:43,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:43,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1134011581, now seen corresponding path program 65 times [2018-10-14 16:20:43,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:45,588 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 16:20:45,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:45,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-14 16:20:45,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-14 16:20:45,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-14 16:20:45,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=2411, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:20:45,589 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 69 states. [2018-10-14 16:20:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:48,866 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-10-14 16:20:48,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-14 16:20:48,866 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 321 [2018-10-14 16:20:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:48,867 INFO L225 Difference]: With dead ends: 327 [2018-10-14 16:20:48,868 INFO L226 Difference]: Without dead ends: 327 [2018-10-14 16:20:48,868 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 16:20:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-14 16:20:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2018-10-14 16:20:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-10-14 16:20:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-10-14 16:20:48,871 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 321 [2018-10-14 16:20:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:48,871 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-10-14 16:20:48,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-14 16:20:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-10-14 16:20:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-14 16:20:48,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:48,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:48,872 INFO L424 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:48,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -764898847, now seen corresponding path program 66 times [2018-10-14 16:20:48,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:50,978 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 16:20:50,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:50,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-14 16:20:50,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-14 16:20:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-14 16:20:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=2481, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:20:50,980 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 70 states. [2018-10-14 16:20:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:54,438 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2018-10-14 16:20:54,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 16:20:54,438 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 324 [2018-10-14 16:20:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:54,439 INFO L225 Difference]: With dead ends: 330 [2018-10-14 16:20:54,439 INFO L226 Difference]: Without dead ends: 330 [2018-10-14 16:20:54,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6969, Invalid=11391, Unknown=0, NotChecked=0, Total=18360 [2018-10-14 16:20:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-10-14 16:20:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2018-10-14 16:20:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-10-14 16:20:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-10-14 16:20:54,443 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 324 [2018-10-14 16:20:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:54,443 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-10-14 16:20:54,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-14 16:20:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-10-14 16:20:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-14 16:20:54,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:54,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:54,445 INFO L424 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:54,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash 356281987, now seen corresponding path program 67 times [2018-10-14 16:20:54,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:20:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:20:56,632 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 16:20:56,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:20:56,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 16:20:56,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 16:20:56,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 16:20:56,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=2552, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 16:20:56,634 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 71 states. [2018-10-14 16:20:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:20:59,972 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-14 16:20:59,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:20:59,972 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 327 [2018-10-14 16:20:59,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:20:59,973 INFO L225 Difference]: With dead ends: 333 [2018-10-14 16:20:59,973 INFO L226 Difference]: Without dead ends: 333 [2018-10-14 16:20:59,974 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 16:20:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-14 16:20:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2018-10-14 16:20:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-14 16:20:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-14 16:20:59,977 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 327 [2018-10-14 16:20:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:20:59,977 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-14 16:20:59,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 16:20:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-14 16:20:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-14 16:20:59,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:20:59,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:20:59,979 INFO L424 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:20:59,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:20:59,979 INFO L82 PathProgramCache]: Analyzing trace with hash -506153311, now seen corresponding path program 68 times [2018-10-14 16:20:59,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:02,249 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 16:21:02,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:02,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-14 16:21:02,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-14 16:21:02,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-14 16:21:02,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=2624, Unknown=0, NotChecked=0, Total=5112 [2018-10-14 16:21:02,250 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 72 states. [2018-10-14 16:21:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:05,602 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2018-10-14 16:21:05,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-14 16:21:05,602 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 330 [2018-10-14 16:21:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:05,604 INFO L225 Difference]: With dead ends: 336 [2018-10-14 16:21:05,604 INFO L226 Difference]: Without dead ends: 336 [2018-10-14 16:21:05,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7384, Invalid=12076, Unknown=0, NotChecked=0, Total=19460 [2018-10-14 16:21:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-10-14 16:21:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2018-10-14 16:21:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-14 16:21:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-10-14 16:21:05,607 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 330 [2018-10-14 16:21:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:05,607 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-10-14 16:21:05,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-14 16:21:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-10-14 16:21:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-14 16:21:05,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:05,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:05,609 INFO L424 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:05,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:05,609 INFO L82 PathProgramCache]: Analyzing trace with hash -821751357, now seen corresponding path program 69 times [2018-10-14 16:21:05,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:08,314 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 16:21:08,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:08,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:21:08,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:21:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:21:08,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=2697, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:21:08,315 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 73 states. [2018-10-14 16:21:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:11,728 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-10-14 16:21:11,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-14 16:21:11,728 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 333 [2018-10-14 16:21:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:11,729 INFO L225 Difference]: With dead ends: 339 [2018-10-14 16:21:11,729 INFO L226 Difference]: Without dead ends: 339 [2018-10-14 16:21:11,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7596, Invalid=12426, Unknown=0, NotChecked=0, Total=20022 [2018-10-14 16:21:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-14 16:21:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2018-10-14 16:21:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-14 16:21:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-10-14 16:21:11,733 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 333 [2018-10-14 16:21:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:11,733 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-10-14 16:21:11,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:21:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-10-14 16:21:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-14 16:21:11,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:11,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:11,734 INFO L424 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:11,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:11,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1119728799, now seen corresponding path program 70 times [2018-10-14 16:21:11,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:14,290 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 16:21:14,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:14,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-14 16:21:14,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-14 16:21:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-14 16:21:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2631, Invalid=2771, Unknown=0, NotChecked=0, Total=5402 [2018-10-14 16:21:14,292 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 74 states. [2018-10-14 16:21:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:17,839 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2018-10-14 16:21:17,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:21:17,839 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 336 [2018-10-14 16:21:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:17,840 INFO L225 Difference]: With dead ends: 342 [2018-10-14 16:21:17,840 INFO L226 Difference]: Without dead ends: 342 [2018-10-14 16:21:17,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7811, Invalid=12781, Unknown=0, NotChecked=0, Total=20592 [2018-10-14 16:21:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-14 16:21:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2018-10-14 16:21:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-14 16:21:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-14 16:21:17,844 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 336 [2018-10-14 16:21:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:17,845 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-14 16:21:17,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-14 16:21:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-14 16:21:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-14 16:21:17,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:17,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:17,846 INFO L424 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:17,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -468302589, now seen corresponding path program 71 times [2018-10-14 16:21:17,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:20,550 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 16:21:20,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:20,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-10-14 16:21:20,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-14 16:21:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-14 16:21:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2704, Invalid=2846, Unknown=0, NotChecked=0, Total=5550 [2018-10-14 16:21:20,551 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 75 states. [2018-10-14 16:21:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:24,407 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-14 16:21:24,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-14 16:21:24,407 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 339 [2018-10-14 16:21:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:24,408 INFO L225 Difference]: With dead ends: 345 [2018-10-14 16:21:24,408 INFO L226 Difference]: Without dead ends: 345 [2018-10-14 16:21:24,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8029, Invalid=13141, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:21:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-10-14 16:21:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2018-10-14 16:21:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-14 16:21:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-14 16:21:24,412 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 339 [2018-10-14 16:21:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:24,413 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-14 16:21:24,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-14 16:21:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-14 16:21:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-14 16:21:24,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:24,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:24,414 INFO L424 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:24,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1507676193, now seen corresponding path program 72 times [2018-10-14 16:21:24,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:26,857 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 16:21:26,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:26,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-10-14 16:21:26,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-14 16:21:26,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-14 16:21:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2778, Invalid=2922, Unknown=0, NotChecked=0, Total=5700 [2018-10-14 16:21:26,859 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 76 states. [2018-10-14 16:21:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:30,797 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2018-10-14 16:21:30,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-14 16:21:30,797 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 342 [2018-10-14 16:21:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:30,799 INFO L225 Difference]: With dead ends: 348 [2018-10-14 16:21:30,799 INFO L226 Difference]: Without dead ends: 348 [2018-10-14 16:21:30,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8250, Invalid=13506, Unknown=0, NotChecked=0, Total=21756 [2018-10-14 16:21:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-14 16:21:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2018-10-14 16:21:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-10-14 16:21:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-10-14 16:21:30,802 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 342 [2018-10-14 16:21:30,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:30,802 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-10-14 16:21:30,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-14 16:21:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-10-14 16:21:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-14 16:21:30,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:30,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:30,804 INFO L424 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:30,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:30,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1069811779, now seen corresponding path program 73 times [2018-10-14 16:21:30,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:33,329 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 16:21:33,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:33,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-14 16:21:33,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-14 16:21:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-14 16:21:33,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2853, Invalid=2999, Unknown=0, NotChecked=0, Total=5852 [2018-10-14 16:21:33,331 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 77 states. [2018-10-14 16:21:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:37,044 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-10-14 16:21:37,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-14 16:21:37,044 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 345 [2018-10-14 16:21:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:37,045 INFO L225 Difference]: With dead ends: 351 [2018-10-14 16:21:37,045 INFO L226 Difference]: Without dead ends: 351 [2018-10-14 16:21:37,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8474, Invalid=13876, Unknown=0, NotChecked=0, Total=22350 [2018-10-14 16:21:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-14 16:21:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2018-10-14 16:21:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-14 16:21:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-10-14 16:21:37,049 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 345 [2018-10-14 16:21:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:37,049 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-10-14 16:21:37,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-14 16:21:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-10-14 16:21:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-14 16:21:37,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:37,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:37,051 INFO L424 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:37,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash 466732257, now seen corresponding path program 74 times [2018-10-14 16:21:37,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:39,848 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 16:21:39,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:39,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-14 16:21:39,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-14 16:21:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-14 16:21:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=3077, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:21:39,850 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 78 states. [2018-10-14 16:21:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:43,750 INFO L93 Difference]: Finished difference Result 354 states and 354 transitions. [2018-10-14 16:21:43,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-14 16:21:43,750 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 348 [2018-10-14 16:21:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:43,751 INFO L225 Difference]: With dead ends: 354 [2018-10-14 16:21:43,752 INFO L226 Difference]: Without dead ends: 354 [2018-10-14 16:21:43,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8701, Invalid=14251, Unknown=0, NotChecked=0, Total=22952 [2018-10-14 16:21:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-14 16:21:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2018-10-14 16:21:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-10-14 16:21:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-10-14 16:21:43,755 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 348 [2018-10-14 16:21:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:43,755 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-10-14 16:21:43,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-14 16:21:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-10-14 16:21:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-10-14 16:21:43,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:43,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:43,757 INFO L424 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:43,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash -27108477, now seen corresponding path program 75 times [2018-10-14 16:21:43,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:46,356 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 16:21:46,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:46,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-14 16:21:46,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-14 16:21:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-14 16:21:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=3156, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:21:46,358 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 79 states. [2018-10-14 16:21:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:50,473 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-14 16:21:50,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-14 16:21:50,474 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 351 [2018-10-14 16:21:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:50,475 INFO L225 Difference]: With dead ends: 357 [2018-10-14 16:21:50,475 INFO L226 Difference]: Without dead ends: 357 [2018-10-14 16:21:50,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8931, Invalid=14631, Unknown=0, NotChecked=0, Total=23562 [2018-10-14 16:21:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-10-14 16:21:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 355. [2018-10-14 16:21:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-14 16:21:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-14 16:21:50,479 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 351 [2018-10-14 16:21:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:50,479 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-14 16:21:50,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-14 16:21:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-14 16:21:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-14 16:21:50,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:50,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:50,481 INFO L424 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:50,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:50,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1773426271, now seen corresponding path program 76 times [2018-10-14 16:21:50,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:21:53,188 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 16:21:53,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:21:53,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-10-14 16:21:53,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-14 16:21:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-14 16:21:53,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3084, Invalid=3236, Unknown=0, NotChecked=0, Total=6320 [2018-10-14 16:21:53,189 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 80 states. [2018-10-14 16:21:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:21:57,407 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2018-10-14 16:21:57,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-14 16:21:57,408 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 354 [2018-10-14 16:21:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:21:57,409 INFO L225 Difference]: With dead ends: 360 [2018-10-14 16:21:57,409 INFO L226 Difference]: Without dead ends: 360 [2018-10-14 16:21:57,410 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 16:21:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-10-14 16:21:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2018-10-14 16:21:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-14 16:21:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-10-14 16:21:57,413 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 354 [2018-10-14 16:21:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:21:57,413 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-10-14 16:21:57,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-14 16:21:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-10-14 16:21:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-14 16:21:57,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:21:57,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:21:57,415 INFO L424 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:21:57,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:21:57,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1387970877, now seen corresponding path program 77 times [2018-10-14 16:21:57,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:21:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:00,544 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 16:22:00,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:00,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-14 16:22:00,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-14 16:22:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-14 16:22:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=3317, Unknown=0, NotChecked=0, Total=6480 [2018-10-14 16:22:00,546 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 81 states. [2018-10-14 16:22:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:04,865 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-10-14 16:22:04,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-14 16:22:04,866 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 357 [2018-10-14 16:22:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:04,867 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:22:04,867 INFO L226 Difference]: Without dead ends: 363 [2018-10-14 16:22:04,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=9400, Invalid=15406, Unknown=0, NotChecked=0, Total=24806 [2018-10-14 16:22:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-14 16:22:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2018-10-14 16:22:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-14 16:22:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-10-14 16:22:04,871 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 357 [2018-10-14 16:22:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:04,871 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-10-14 16:22:04,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-14 16:22:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-10-14 16:22:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-14 16:22:04,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:04,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:04,873 INFO L424 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:04,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1266089569, now seen corresponding path program 78 times [2018-10-14 16:22:04,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:07,819 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 16:22:07,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:07,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-10-14 16:22:07,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-14 16:22:07,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-14 16:22:07,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3243, Invalid=3399, Unknown=0, NotChecked=0, Total=6642 [2018-10-14 16:22:07,821 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 82 states. [2018-10-14 16:22:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:12,313 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2018-10-14 16:22:12,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-14 16:22:12,314 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 360 [2018-10-14 16:22:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:12,315 INFO L225 Difference]: With dead ends: 366 [2018-10-14 16:22:12,315 INFO L226 Difference]: Without dead ends: 366 [2018-10-14 16:22:12,316 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 16:22:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-14 16:22:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2018-10-14 16:22:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-14 16:22:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-10-14 16:22:12,319 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 360 [2018-10-14 16:22:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:12,319 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-10-14 16:22:12,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-14 16:22:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-10-14 16:22:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-14 16:22:12,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:12,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:12,321 INFO L424 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:12,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1967083005, now seen corresponding path program 79 times [2018-10-14 16:22:12,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:15,566 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 16:22:15,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:15,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-14 16:22:15,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-14 16:22:15,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-14 16:22:15,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3324, Invalid=3482, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:22:15,568 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 83 states. [2018-10-14 16:22:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:20,109 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-14 16:22:20,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-14 16:22:20,109 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 363 [2018-10-14 16:22:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:20,110 INFO L225 Difference]: With dead ends: 369 [2018-10-14 16:22:20,110 INFO L226 Difference]: Without dead ends: 369 [2018-10-14 16:22:20,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=9881, Invalid=16201, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:22:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-14 16:22:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2018-10-14 16:22:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-14 16:22:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-14 16:22:20,114 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 363 [2018-10-14 16:22:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:20,114 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-14 16:22:20,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-14 16:22:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-14 16:22:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-14 16:22:20,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:20,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:20,116 INFO L424 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:20,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:20,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1820312353, now seen corresponding path program 80 times [2018-10-14 16:22:20,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:23,140 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 16:22:23,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:23,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-10-14 16:22:23,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-14 16:22:23,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-14 16:22:23,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3406, Invalid=3566, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:22:23,142 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 84 states. [2018-10-14 16:22:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:27,588 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2018-10-14 16:22:27,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-14 16:22:27,589 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 366 [2018-10-14 16:22:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:27,590 INFO L225 Difference]: With dead ends: 372 [2018-10-14 16:22:27,590 INFO L226 Difference]: Without dead ends: 372 [2018-10-14 16:22:27,591 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 16:22:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-10-14 16:22:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 370. [2018-10-14 16:22:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-10-14 16:22:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-10-14 16:22:27,594 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 366 [2018-10-14 16:22:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-10-14 16:22:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-14 16:22:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-10-14 16:22:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-10-14 16:22:27,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:27,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:27,596 INFO L424 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:27,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash -970410685, now seen corresponding path program 81 times [2018-10-14 16:22:27,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:30,847 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 16:22:30,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:30,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-10-14 16:22:30,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-14 16:22:30,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-14 16:22:30,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3489, Invalid=3651, Unknown=0, NotChecked=0, Total=7140 [2018-10-14 16:22:30,849 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 85 states. [2018-10-14 16:22:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:35,559 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-10-14 16:22:35,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-14 16:22:35,559 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 369 [2018-10-14 16:22:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:35,560 INFO L225 Difference]: With dead ends: 375 [2018-10-14 16:22:35,560 INFO L226 Difference]: Without dead ends: 375 [2018-10-14 16:22:35,561 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 16:22:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-14 16:22:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2018-10-14 16:22:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-10-14 16:22:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-10-14 16:22:35,564 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 369 [2018-10-14 16:22:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:35,564 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-10-14 16:22:35,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-14 16:22:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-10-14 16:22:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-14 16:22:35,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:35,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:35,566 INFO L424 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:35,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1718487071, now seen corresponding path program 82 times [2018-10-14 16:22:35,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:38,738 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 16:22:38,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:38,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-10-14 16:22:38,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-14 16:22:38,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-14 16:22:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3573, Invalid=3737, Unknown=0, NotChecked=0, Total=7310 [2018-10-14 16:22:38,739 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 86 states. [2018-10-14 16:22:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:43,466 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2018-10-14 16:22:43,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-14 16:22:43,467 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 372 [2018-10-14 16:22:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:43,468 INFO L225 Difference]: With dead ends: 378 [2018-10-14 16:22:43,468 INFO L226 Difference]: Without dead ends: 378 [2018-10-14 16:22:43,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10625, Invalid=17431, Unknown=0, NotChecked=0, Total=28056 [2018-10-14 16:22:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-10-14 16:22:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2018-10-14 16:22:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-10-14 16:22:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-10-14 16:22:43,472 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 372 [2018-10-14 16:22:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:43,473 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-10-14 16:22:43,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-14 16:22:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-10-14 16:22:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-14 16:22:43,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:43,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:43,474 INFO L424 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:43,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:43,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1076803453, now seen corresponding path program 83 times [2018-10-14 16:22:43,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:46,872 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 16:22:46,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:46,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-14 16:22:46,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-14 16:22:46,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-14 16:22:46,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3658, Invalid=3824, Unknown=0, NotChecked=0, Total=7482 [2018-10-14 16:22:46,873 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 87 states. [2018-10-14 16:22:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:51,612 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-14 16:22:51,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-14 16:22:51,613 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 375 [2018-10-14 16:22:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:51,614 INFO L225 Difference]: With dead ends: 381 [2018-10-14 16:22:51,614 INFO L226 Difference]: Without dead ends: 381 [2018-10-14 16:22:51,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=10879, Invalid=17851, Unknown=0, NotChecked=0, Total=28730 [2018-10-14 16:22:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-14 16:22:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2018-10-14 16:22:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-14 16:22:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-14 16:22:51,618 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 375 [2018-10-14 16:22:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:51,618 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-14 16:22:51,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-14 16:22:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-14 16:22:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-14 16:22:51,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:51,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:51,621 INFO L424 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:51,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1579574111, now seen corresponding path program 84 times [2018-10-14 16:22:51,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:22:54,974 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 16:22:54,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:22:54,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-10-14 16:22:54,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-14 16:22:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-14 16:22:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3744, Invalid=3912, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:22:54,975 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 88 states. [2018-10-14 16:22:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:22:59,805 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-14 16:22:59,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-14 16:22:59,805 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 378 [2018-10-14 16:22:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:22:59,806 INFO L225 Difference]: With dead ends: 384 [2018-10-14 16:22:59,806 INFO L226 Difference]: Without dead ends: 384 [2018-10-14 16:22:59,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=11136, Invalid=18276, Unknown=0, NotChecked=0, Total=29412 [2018-10-14 16:22:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-14 16:22:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-10-14 16:22:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-14 16:22:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-10-14 16:22:59,811 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 378 [2018-10-14 16:22:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:22:59,811 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-10-14 16:22:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-14 16:22:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-10-14 16:22:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-10-14 16:22:59,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:22:59,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:22:59,816 INFO L424 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:22:59,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:22:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1225681859, now seen corresponding path program 85 times [2018-10-14 16:22:59,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:22:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:03,390 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 16:23:03,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:03,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-10-14 16:23:03,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-14 16:23:03,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-14 16:23:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=4001, Unknown=0, NotChecked=0, Total=7832 [2018-10-14 16:23:03,392 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 89 states. [2018-10-14 16:23:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:08,424 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-10-14 16:23:08,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:23:08,424 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 381 [2018-10-14 16:23:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:08,425 INFO L225 Difference]: With dead ends: 387 [2018-10-14 16:23:08,426 INFO L226 Difference]: Without dead ends: 387 [2018-10-14 16:23:08,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=11396, Invalid=18706, Unknown=0, NotChecked=0, Total=30102 [2018-10-14 16:23:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-14 16:23:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2018-10-14 16:23:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-10-14 16:23:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-10-14 16:23:08,430 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 381 [2018-10-14 16:23:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:08,431 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-10-14 16:23:08,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-14 16:23:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-10-14 16:23:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-14 16:23:08,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:08,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:08,433 INFO L424 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:08,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:08,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1132638561, now seen corresponding path program 86 times [2018-10-14 16:23:08,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:12,082 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 16:23:12,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:12,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-10-14 16:23:12,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-14 16:23:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-14 16:23:12,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3919, Invalid=4091, Unknown=0, NotChecked=0, Total=8010 [2018-10-14 16:23:12,084 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 90 states. [2018-10-14 16:23:17,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:17,227 INFO L93 Difference]: Finished difference Result 390 states and 390 transitions. [2018-10-14 16:23:17,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-14 16:23:17,227 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 384 [2018-10-14 16:23:17,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:17,229 INFO L225 Difference]: With dead ends: 390 [2018-10-14 16:23:17,229 INFO L226 Difference]: Without dead ends: 390 [2018-10-14 16:23:17,230 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 16:23:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-10-14 16:23:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2018-10-14 16:23:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-10-14 16:23:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-10-14 16:23:17,233 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 384 [2018-10-14 16:23:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:17,233 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-10-14 16:23:17,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-14 16:23:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-10-14 16:23:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-14 16:23:17,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:17,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:17,235 INFO L424 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:17,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash -466346237, now seen corresponding path program 87 times [2018-10-14 16:23:17,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:20,736 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 16:23:20,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:20,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-14 16:23:20,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-14 16:23:20,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-14 16:23:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=4182, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:23:20,738 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 91 states. [2018-10-14 16:23:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:25,935 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-14 16:23:25,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-14 16:23:25,935 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 387 [2018-10-14 16:23:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:25,937 INFO L225 Difference]: With dead ends: 393 [2018-10-14 16:23:25,937 INFO L226 Difference]: Without dead ends: 393 [2018-10-14 16:23:25,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=11925, Invalid=19581, Unknown=0, NotChecked=0, Total=31506 [2018-10-14 16:23:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-10-14 16:23:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 391. [2018-10-14 16:23:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-14 16:23:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-14 16:23:25,941 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 387 [2018-10-14 16:23:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:25,941 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-14 16:23:25,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-14 16:23:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-14 16:23:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-14 16:23:25,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:25,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:25,943 INFO L424 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:25,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:25,943 INFO L82 PathProgramCache]: Analyzing trace with hash -340183519, now seen corresponding path program 88 times [2018-10-14 16:23:25,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:29,748 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 16:23:29,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:29,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-10-14 16:23:29,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-14 16:23:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-14 16:23:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4098, Invalid=4274, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:23:29,750 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 92 states. [2018-10-14 16:23:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:35,153 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2018-10-14 16:23:35,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-14 16:23:35,153 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 390 [2018-10-14 16:23:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:35,154 INFO L225 Difference]: With dead ends: 396 [2018-10-14 16:23:35,154 INFO L226 Difference]: Without dead ends: 396 [2018-10-14 16:23:35,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=12194, Invalid=20026, Unknown=0, NotChecked=0, Total=32220 [2018-10-14 16:23:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-10-14 16:23:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2018-10-14 16:23:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-10-14 16:23:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-10-14 16:23:35,160 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 390 [2018-10-14 16:23:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:35,160 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-10-14 16:23:35,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-14 16:23:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-10-14 16:23:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-14 16:23:35,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:35,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:35,162 INFO L424 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:35,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:35,163 INFO L82 PathProgramCache]: Analyzing trace with hash 76964419, now seen corresponding path program 89 times [2018-10-14 16:23:35,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:39,101 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 16:23:39,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:39,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-14 16:23:39,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-14 16:23:39,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-14 16:23:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4189, Invalid=4367, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:23:39,103 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 93 states. [2018-10-14 16:23:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:44,345 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-10-14 16:23:44,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-14 16:23:44,346 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 393 [2018-10-14 16:23:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:44,347 INFO L225 Difference]: With dead ends: 399 [2018-10-14 16:23:44,347 INFO L226 Difference]: Without dead ends: 399 [2018-10-14 16:23:44,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=12466, Invalid=20476, Unknown=0, NotChecked=0, Total=32942 [2018-10-14 16:23:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-14 16:23:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 397. [2018-10-14 16:23:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-10-14 16:23:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-10-14 16:23:44,351 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 393 [2018-10-14 16:23:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:44,352 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-10-14 16:23:44,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-14 16:23:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-10-14 16:23:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-14 16:23:44,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:44,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:44,354 INFO L424 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:44,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1990798049, now seen corresponding path program 90 times [2018-10-14 16:23:44,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:48,389 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 16:23:48,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:48,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-10-14 16:23:48,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-14 16:23:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-14 16:23:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4281, Invalid=4461, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:23:48,391 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 94 states. [2018-10-14 16:23:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:23:54,033 INFO L93 Difference]: Finished difference Result 402 states and 402 transitions. [2018-10-14 16:23:54,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:23:54,034 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 396 [2018-10-14 16:23:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:23:54,035 INFO L225 Difference]: With dead ends: 402 [2018-10-14 16:23:54,035 INFO L226 Difference]: Without dead ends: 402 [2018-10-14 16:23:54,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=12741, Invalid=20931, Unknown=0, NotChecked=0, Total=33672 [2018-10-14 16:23:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-10-14 16:23:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2018-10-14 16:23:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-10-14 16:23:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-10-14 16:23:54,040 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 396 [2018-10-14 16:23:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:23:54,040 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-10-14 16:23:54,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-14 16:23:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-10-14 16:23:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-14 16:23:54,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:23:54,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:23:54,043 INFO L424 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:23:54,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:23:54,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1317614979, now seen corresponding path program 91 times [2018-10-14 16:23:54,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:23:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:23:58,121 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 16:23:58,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:23:58,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-10-14 16:23:58,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-14 16:23:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-14 16:23:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4374, Invalid=4556, Unknown=0, NotChecked=0, Total=8930 [2018-10-14 16:23:58,123 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 95 states. [2018-10-14 16:24:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:03,949 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-14 16:24:03,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-14 16:24:03,950 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 399 [2018-10-14 16:24:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:03,951 INFO L225 Difference]: With dead ends: 405 [2018-10-14 16:24:03,951 INFO L226 Difference]: Without dead ends: 405 [2018-10-14 16:24:03,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=13019, Invalid=21391, Unknown=0, NotChecked=0, Total=34410 [2018-10-14 16:24:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-10-14 16:24:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 403. [2018-10-14 16:24:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-14 16:24:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-14 16:24:03,955 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 399 [2018-10-14 16:24:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:03,956 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-14 16:24:03,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-14 16:24:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-14 16:24:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-14 16:24:03,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:03,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:03,957 INFO L424 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:03,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:03,958 INFO L82 PathProgramCache]: Analyzing trace with hash -276918367, now seen corresponding path program 92 times [2018-10-14 16:24:03,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:08,087 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 16:24:08,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:08,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-10-14 16:24:08,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-14 16:24:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-14 16:24:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4468, Invalid=4652, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:24:08,090 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 96 states. [2018-10-14 16:24:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:13,773 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2018-10-14 16:24:13,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-14 16:24:13,773 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 402 [2018-10-14 16:24:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:13,774 INFO L225 Difference]: With dead ends: 408 [2018-10-14 16:24:13,774 INFO L226 Difference]: Without dead ends: 408 [2018-10-14 16:24:13,776 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 16:24:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-10-14 16:24:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2018-10-14 16:24:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-10-14 16:24:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-10-14 16:24:13,779 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 402 [2018-10-14 16:24:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:13,779 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-10-14 16:24:13,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-14 16:24:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-10-14 16:24:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-10-14 16:24:13,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:13,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:13,781 INFO L424 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:13,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash -681535293, now seen corresponding path program 93 times [2018-10-14 16:24:13,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:18,031 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 16:24:18,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:24:18,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-10-14 16:24:18,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-14 16:24:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-14 16:24:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4563, Invalid=4749, Unknown=0, NotChecked=0, Total=9312 [2018-10-14 16:24:18,033 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 97 states. [2018-10-14 16:24:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:23,925 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-14 16:24:23,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-14 16:24:23,925 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 405 [2018-10-14 16:24:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:23,926 INFO L225 Difference]: With dead ends: 409 [2018-10-14 16:24:23,926 INFO L226 Difference]: Without dead ends: 409 [2018-10-14 16:24:23,927 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 16:24:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-10-14 16:24:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-10-14 16:24:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-14 16:24:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-14 16:24:23,930 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 405 [2018-10-14 16:24:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:23,931 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-14 16:24:23,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-14 16:24:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-14 16:24:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-14 16:24:23,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:24:23,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:24:23,933 INFO L424 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:24:23,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:24:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1348822113, now seen corresponding path program 94 times [2018-10-14 16:24:23,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:24:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:24:25,586 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 14 [2018-10-14 16:24:25,806 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 16:24:25,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:24:25,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-14 16:24:25,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:24:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:24:25,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:24:25,808 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 15 states. [2018-10-14 16:24:26,358 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-14 16:24:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:24:29,190 INFO L93 Difference]: Finished difference Result 382 states and 382 transitions. [2018-10-14 16:24:29,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:24:29,190 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 408 [2018-10-14 16:24:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:24:29,191 INFO L225 Difference]: With dead ends: 382 [2018-10-14 16:24:29,191 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:24:29,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 17 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:24:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:24:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:24:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:24:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:24:29,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 408 [2018-10-14 16:24:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:24:29,193 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:24:29,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:24:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:24:29,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:24:29,198 INFO L202 PluginConnector]: Adding new model 20051113-1.c_false-valid-memtrack.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:24:29 BoogieIcfgContainer [2018-10-14 16:24:29,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:24:29,199 INFO L168 Benchmark]: Toolchain (without parser) took 376387.37 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 84.9 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 133.9 MB). Peak memory consumption was 218.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:29,200 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 16:24:29,200 INFO L168 Benchmark]: Boogie Preprocessor took 94.61 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 16:24:29,201 INFO L168 Benchmark]: RCFGBuilder took 962.71 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:29,201 INFO L168 Benchmark]: TraceAbstraction took 375320.36 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 84.9 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.6 MB). Peak memory consumption was 176.5 MB. Max. memory is 7.1 GB. [2018-10-14 16:24:29,204 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 0.22 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 94.61 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 962.71 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 375320.36 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 84.9 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.6 MB). Peak memory consumption was 176.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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, 131 locations, 1 error locations. SAFE Result, 375.2s OverallTime, 95 OverallIterations, 94 TraceHistogramMax, 215.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11604 SDtfs, 28127 SDslu, 403403 SDs, 0 SdLazy, 31121 SolverSat, 4650 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9167 GetRequests, 194 SyntacticMatches, 17 SemanticMatches, 8956 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138495 ImplicationChecksByTransitivity, 319.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=409occurred 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, 2.2s SatisfiabilityAnalysisTime, 149.9s InterpolantComputationTime, 25365 NumberOfCodeBlocks, 25365 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 25270 ConstructedInterpolants, 0 QuantifiedInterpolants, 25010997 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_33.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-24-29-215.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/20051113-1.c_false-valid-memtrack.i_33.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-24-29-215.csv Received shutdown request...