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/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:08:45,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:08:45,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:08:45,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:08:45,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:08:45,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:08:45,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:08:45,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:08:45,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:08:45,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:08:45,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 21:08:45,944 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:08:45,960 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:08:45,960 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:08:45,961 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:08:45,961 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:08:45,962 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:08:45,962 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:08:45,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:08:45,963 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:08:45,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:08:45,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:08:45,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:08:45,964 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:08:45,964 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:08:45,965 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:08:45,965 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:08:46,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:08:46,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:08:46,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:08:46,030 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:08:46,030 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:08:46,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 21:08:46,031 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl' [2018-10-12 21:08:46,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:08:46,099 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:08:46,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:08:46,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:08:46,100 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:08:46,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... [2018-10-12 21:08:46,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:08:46,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:08:46,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:08:46,158 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:08:46,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:08:46,232 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:08:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:08:46,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:08:46,919 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:08:46,920 INFO L202 PluginConnector]: Adding new model openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:08:46 BoogieIcfgContainer [2018-10-12 21:08:46,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:08:46,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:08:46,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:08:46,925 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:08:46,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:46" (1/2) ... [2018-10-12 21:08:46,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d17368 and model type openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:08:46, skipping insertion in model container [2018-10-12 21:08:46,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:08:46" (2/2) ... [2018-10-12 21:08:46,929 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i_9.bpl [2018-10-12 21:08:46,939 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:08:46,950 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:08:46,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:08:47,004 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:08:47,005 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:08:47,005 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:08:47,005 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:08:47,006 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:08:47,006 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:08:47,006 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:08:47,006 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:08:47,006 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:08:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-10-12 21:08:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-12 21:08:47,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:47,051 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:47,052 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:47,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash -780520305, now seen corresponding path program 1 times [2018-10-12 21:08:47,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:47,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:08:47,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 21:08:47,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 21:08:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 21:08:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-12 21:08:47,969 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 11 states. [2018-10-12 21:08:48,931 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-12 21:08:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:49,289 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-12 21:08:49,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 21:08:49,291 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2018-10-12 21:08:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:49,305 INFO L225 Difference]: With dead ends: 91 [2018-10-12 21:08:49,305 INFO L226 Difference]: Without dead ends: 91 [2018-10-12 21:08:49,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-12 21:08:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-12 21:08:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-10-12 21:08:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-12 21:08:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-12 21:08:49,352 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 66 [2018-10-12 21:08:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:49,353 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-12 21:08:49,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 21:08:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-12 21:08:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 21:08:49,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:49,357 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:49,357 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:49,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash -361483911, now seen corresponding path program 1 times [2018-10-12 21:08:49,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:49,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:49,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-12 21:08:49,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 21:08:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 21:08:49,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-12 21:08:49,710 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 12 states. [2018-10-12 21:08:50,685 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-12 21:08:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:50,787 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-12 21:08:50,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 21:08:50,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2018-10-12 21:08:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:50,789 INFO L225 Difference]: With dead ends: 104 [2018-10-12 21:08:50,790 INFO L226 Difference]: Without dead ends: 104 [2018-10-12 21:08:50,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:08:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-12 21:08:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2018-10-12 21:08:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-12 21:08:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-12 21:08:50,801 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 79 [2018-10-12 21:08:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:50,801 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-12 21:08:50,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 21:08:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-12 21:08:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-12 21:08:50,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:50,804 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:50,804 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:50,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1253179185, now seen corresponding path program 2 times [2018-10-12 21:08:50,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:51,246 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-10-12 21:08:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:51,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:51,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-12 21:08:51,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-12 21:08:51,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-12 21:08:51,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-10-12 21:08:51,672 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 21 states. [2018-10-12 21:08:52,857 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-12 21:08:53,117 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-12 21:08:53,438 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-12 21:08:53,705 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-12 21:08:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:54,336 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-12 21:08:54,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-12 21:08:54,339 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2018-10-12 21:08:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:54,341 INFO L225 Difference]: With dead ends: 117 [2018-10-12 21:08:54,341 INFO L226 Difference]: Without dead ends: 117 [2018-10-12 21:08:54,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=414, Invalid=1146, Unknown=0, NotChecked=0, Total=1560 [2018-10-12 21:08:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-12 21:08:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2018-10-12 21:08:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-12 21:08:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-12 21:08:54,352 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 92 [2018-10-12 21:08:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:54,353 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-12 21:08:54,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-12 21:08:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-12 21:08:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-12 21:08:54,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:54,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:54,355 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:54,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1235111225, now seen corresponding path program 3 times [2018-10-12 21:08:54,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:54,862 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-10-12 21:08:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:55,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:55,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-12 21:08:55,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-12 21:08:55,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-12 21:08:55,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-10-12 21:08:55,628 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 26 states. [2018-10-12 21:08:57,269 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:08:57,481 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-12 21:08:57,651 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 21:08:57,847 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-10-12 21:08:58,317 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-12 21:08:58,549 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 21:08:58,746 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-12 21:08:59,254 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-12 21:09:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:00,085 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-12 21:09:00,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-12 21:09:00,085 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2018-10-12 21:09:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:00,088 INFO L225 Difference]: With dead ends: 130 [2018-10-12 21:09:00,088 INFO L226 Difference]: Without dead ends: 130 [2018-10-12 21:09:00,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 21:09:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-12 21:09:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2018-10-12 21:09:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-12 21:09:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-12 21:09:00,099 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 105 [2018-10-12 21:09:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:00,099 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-12 21:09:00,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-12 21:09:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-12 21:09:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-12 21:09:00,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:00,102 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:00,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:00,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1795228401, now seen corresponding path program 4 times [2018-10-12 21:09:00,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:02,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:02,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 21:09:02,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 21:09:02,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 21:09:02,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:09:02,078 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 33 states. [2018-10-12 21:09:03,699 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 21:09:03,953 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-12 21:09:04,144 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:09:04,484 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-12 21:09:04,673 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-10-12 21:09:04,931 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-10-12 21:09:05,164 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 21:09:05,420 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-12 21:09:05,877 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-10-12 21:09:06,238 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2018-10-12 21:09:06,590 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2018-10-12 21:09:06,898 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-10-12 21:09:07,127 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2018-10-12 21:09:07,387 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-12 21:09:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:08,279 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-12 21:09:08,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-12 21:09:08,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 118 [2018-10-12 21:09:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:08,289 INFO L225 Difference]: With dead ends: 143 [2018-10-12 21:09:08,289 INFO L226 Difference]: Without dead ends: 143 [2018-10-12 21:09:08,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=770, Invalid=2890, Unknown=0, NotChecked=0, Total=3660 [2018-10-12 21:09:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-12 21:09:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 132. [2018-10-12 21:09:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-12 21:09:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-12 21:09:08,303 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 118 [2018-10-12 21:09:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:08,303 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-12 21:09:08,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 21:09:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-12 21:09:08,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-12 21:09:08,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:08,306 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:08,306 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:08,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:08,307 INFO L82 PathProgramCache]: Analyzing trace with hash 836319481, now seen corresponding path program 5 times [2018-10-12 21:09:08,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:10,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:10,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-12 21:09:10,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-12 21:09:10,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-12 21:09:10,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-10-12 21:09:10,997 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 36 states. [2018-10-12 21:09:12,464 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 21:09:12,695 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 21:09:13,015 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 21:09:13,250 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 21:09:13,437 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:09:13,663 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-10-12 21:09:14,024 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 114 [2018-10-12 21:09:14,352 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-10-12 21:09:14,612 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 21:09:14,941 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2018-10-12 21:09:15,412 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 21:09:15,753 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2018-10-12 21:09:16,327 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2018-10-12 21:09:16,557 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-12 21:09:17,254 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-12 21:09:17,541 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 21:09:17,812 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-10-12 21:09:18,587 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 21:09:18,785 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 21:09:19,151 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 21:09:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:19,207 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-12 21:09:19,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-12 21:09:19,208 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 131 [2018-10-12 21:09:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:19,210 INFO L225 Difference]: With dead ends: 156 [2018-10-12 21:09:19,210 INFO L226 Difference]: Without dead ends: 156 [2018-10-12 21:09:19,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=874, Invalid=3956, Unknown=0, NotChecked=0, Total=4830 [2018-10-12 21:09:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-12 21:09:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 145. [2018-10-12 21:09:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-12 21:09:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-12 21:09:19,222 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 131 [2018-10-12 21:09:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:19,222 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-12 21:09:19,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-12 21:09:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-12 21:09:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-12 21:09:19,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:19,225 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:19,225 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:19,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1500588367, now seen corresponding path program 6 times [2018-10-12 21:09:19,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:22,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:22,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 21:09:22,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 21:09:22,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 21:09:22,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:09:22,264 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 43 states. [2018-10-12 21:09:23,621 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-10-12 21:09:23,874 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-10-12 21:09:24,200 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 21:09:24,484 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 21:09:24,692 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:09:24,975 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-10-12 21:09:25,236 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 21:09:25,591 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 21:09:26,119 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:09:26,563 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2018-10-12 21:09:26,940 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2018-10-12 21:09:27,376 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-12 21:09:27,896 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2018-10-12 21:09:28,399 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2018-10-12 21:09:28,811 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2018-10-12 21:09:29,195 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-10-12 21:09:29,583 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2018-10-12 21:09:29,992 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2018-10-12 21:09:30,408 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-12 21:09:30,726 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2018-10-12 21:09:31,052 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2018-10-12 21:09:31,440 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2018-10-12 21:09:31,908 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2018-10-12 21:09:32,290 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2018-10-12 21:09:32,672 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-12 21:09:32,994 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-10-12 21:09:33,273 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 21:09:33,726 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-10-12 21:09:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:33,750 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-12 21:09:33,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 21:09:33,750 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 144 [2018-10-12 21:09:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:33,752 INFO L225 Difference]: With dead ends: 169 [2018-10-12 21:09:33,752 INFO L226 Difference]: Without dead ends: 169 [2018-10-12 21:09:33,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=1315, Invalid=5165, Unknown=0, NotChecked=0, Total=6480 [2018-10-12 21:09:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-12 21:09:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2018-10-12 21:09:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-12 21:09:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-12 21:09:33,763 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 144 [2018-10-12 21:09:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:33,764 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-12 21:09:33,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 21:09:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-12 21:09:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-12 21:09:33,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:33,766 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:33,767 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:33,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1287713977, now seen corresponding path program 7 times [2018-10-12 21:09:33,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:35,442 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2018-10-12 21:09:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:38,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:38,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-12 21:09:38,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-12 21:09:38,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-12 21:09:38,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2018-10-12 21:09:38,104 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 47 states. [2018-10-12 21:09:39,750 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-12 21:09:40,029 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 21:09:40,358 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 21:09:40,834 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-10-12 21:09:41,165 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 21:09:41,419 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:09:41,796 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2018-10-12 21:09:42,264 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2018-10-12 21:09:42,877 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2018-10-12 21:09:43,400 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2018-10-12 21:09:43,793 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 135 [2018-10-12 21:09:44,242 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2018-10-12 21:09:44,771 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2018-10-12 21:09:45,461 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2018-10-12 21:09:46,054 WARN L178 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 150 [2018-10-12 21:09:46,689 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2018-10-12 21:09:47,228 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2018-10-12 21:09:47,788 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-12 21:09:48,373 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2018-10-12 21:09:48,963 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2018-10-12 21:09:49,358 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-12 21:09:49,755 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2018-10-12 21:09:50,199 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2018-10-12 21:09:50,698 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-12 21:09:51,196 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2018-10-12 21:09:51,576 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-12 21:09:52,007 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2018-10-12 21:09:52,453 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2018-10-12 21:09:52,916 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2018-10-12 21:09:53,354 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2018-10-12 21:09:53,753 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 119 [2018-10-12 21:09:54,111 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-10-12 21:09:54,397 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 21:09:54,646 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-12 21:09:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:54,684 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-12 21:09:54,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-12 21:09:54,685 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 157 [2018-10-12 21:09:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:54,687 INFO L225 Difference]: With dead ends: 182 [2018-10-12 21:09:54,687 INFO L226 Difference]: Without dead ends: 182 [2018-10-12 21:09:54,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=1579, Invalid=6431, Unknown=0, NotChecked=0, Total=8010 [2018-10-12 21:09:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-12 21:09:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2018-10-12 21:09:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-12 21:09:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-12 21:09:54,696 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 157 [2018-10-12 21:09:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:54,697 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-12 21:09:54,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-12 21:09:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-12 21:09:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-12 21:09:54,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:54,700 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:54,700 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:54,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash -695695985, now seen corresponding path program 8 times [2018-10-12 21:09:54,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:55,905 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2018-10-12 21:09:56,108 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 21:09:56,315 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 21:09:56,529 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:09:56,743 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 21:09:57,031 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2018-10-12 21:09:57,323 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-12 21:09:57,563 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:09:57,821 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2018-10-12 21:09:58,052 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:09:58,362 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:09:58,593 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:09:59,018 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:09:59,832 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:10:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:01,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:01,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-12 21:10:01,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-12 21:10:01,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-12 21:10:01,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2018-10-12 21:10:01,710 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 53 states. [2018-10-12 21:10:03,594 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-12 21:10:03,933 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-12 21:10:04,334 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:10:04,864 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-10-12 21:10:05,266 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 21:10:05,565 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-10-12 21:10:05,921 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 21:10:06,248 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 21:10:06,753 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 21:10:07,103 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 21:10:07,661 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2018-10-12 21:10:08,163 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-12 21:10:08,709 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2018-10-12 21:10:09,390 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2018-10-12 21:10:10,001 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2018-10-12 21:10:10,443 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2018-10-12 21:10:10,957 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2018-10-12 21:10:11,513 WARN L178 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2018-10-12 21:10:12,107 WARN L178 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2018-10-12 21:10:12,788 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2018-10-12 21:10:13,249 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-12 21:10:13,798 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-10-12 21:10:14,346 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 156 [2018-10-12 21:10:14,907 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2018-10-12 21:10:15,490 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 162 [2018-10-12 21:10:15,912 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2018-10-12 21:10:16,362 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2018-10-12 21:10:16,854 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-10-12 21:10:17,379 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2018-10-12 21:10:17,972 WARN L178 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2018-10-12 21:10:18,395 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2018-10-12 21:10:18,822 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2018-10-12 21:10:19,295 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2018-10-12 21:10:19,800 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-12 21:10:20,304 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2018-10-12 21:10:20,710 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-12 21:10:21,138 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2018-10-12 21:10:21,475 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-12 21:10:21,755 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-10-12 21:10:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:21,800 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-12 21:10:21,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-12 21:10:21,801 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 170 [2018-10-12 21:10:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:21,803 INFO L225 Difference]: With dead ends: 195 [2018-10-12 21:10:21,803 INFO L226 Difference]: Without dead ends: 195 [2018-10-12 21:10:21,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=2016, Invalid=8084, Unknown=0, NotChecked=0, Total=10100 [2018-10-12 21:10:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-12 21:10:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-10-12 21:10:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 21:10:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-12 21:10:21,811 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 170 [2018-10-12 21:10:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:21,812 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-12 21:10:21,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-12 21:10:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-12 21:10:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-12 21:10:21,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:21,820 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:21,820 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:21,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:21,821 INFO L82 PathProgramCache]: Analyzing trace with hash 955351161, now seen corresponding path program 9 times [2018-10-12 21:10:21,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:23,216 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2018-10-12 21:10:23,536 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 21:10:23,867 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 21:10:24,103 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2018-10-12 21:10:24,382 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 21:10:24,635 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-12 21:10:24,881 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-10-12 21:10:25,182 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2018-10-12 21:10:25,517 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 65 [2018-10-12 21:10:25,807 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 21:10:26,106 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 21:10:26,402 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:10:26,741 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-10-12 21:10:26,970 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2018-10-12 21:10:27,210 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 21:10:27,445 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 21:10:27,693 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:10:28,050 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-10-12 21:10:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:31,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:31,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-12 21:10:31,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-12 21:10:31,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-12 21:10:31,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2939, Unknown=0, NotChecked=0, Total=3080 [2018-10-12 21:10:31,578 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 56 states. [2018-10-12 21:10:33,699 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-10-12 21:10:34,139 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-12 21:10:34,643 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-12 21:10:35,256 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-10-12 21:10:35,723 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2018-10-12 21:10:36,077 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 21:10:36,507 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-10-12 21:10:37,179 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-10-12 21:10:38,144 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2018-10-12 21:10:38,930 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2018-10-12 21:10:39,534 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-10-12 21:10:39,938 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:10:40,568 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2018-10-12 21:10:41,164 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-10-12 21:10:41,587 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2018-10-12 21:10:41,929 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-10-12 21:10:42,338 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-10-12 21:10:42,973 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2018-10-12 21:10:43,681 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2018-10-12 21:10:44,127 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2018-10-12 21:10:44,464 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:10:44,867 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-10-12 21:10:45,235 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-12 21:10:45,816 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-12 21:10:46,198 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-10-12 21:10:46,520 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-10-12 21:10:46,906 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-10-12 21:10:47,464 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2018-10-12 21:10:48,029 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 21:10:48,496 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-10-12 21:10:48,823 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-10-12 21:10:49,198 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 21:10:49,697 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2018-10-12 21:10:50,225 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-10-12 21:10:50,575 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-12 21:10:50,878 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-10-12 21:10:51,244 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-12 21:10:51,718 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2018-10-12 21:10:52,242 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 21:10:52,587 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-10-12 21:10:52,878 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:10:53,228 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:10:53,914 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-10-12 21:10:54,210 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 21:10:54,849 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-10-12 21:10:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:54,940 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-12 21:10:54,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-12 21:10:54,941 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 183 [2018-10-12 21:10:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:54,944 INFO L225 Difference]: With dead ends: 208 [2018-10-12 21:10:54,944 INFO L226 Difference]: Without dead ends: 208 [2018-10-12 21:10:54,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2018-10-12 21:10:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-12 21:10:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-10-12 21:10:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-12 21:10:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-12 21:10:54,952 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 183 [2018-10-12 21:10:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:54,952 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-12 21:10:54,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-12 21:10:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-12 21:10:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-12 21:10:54,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:54,954 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:54,954 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:54,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 187240911, now seen corresponding path program 10 times [2018-10-12 21:10:54,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:56,503 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:10:56,910 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:10:57,333 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:10:57,758 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:10:58,198 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:10:58,752 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 60 [2018-10-12 21:10:59,185 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 58 [2018-10-12 21:10:59,665 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 21:11:00,176 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2018-10-12 21:11:00,675 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:11:01,139 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:11:01,603 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:11:02,098 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-12 21:11:02,472 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 21:11:02,843 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:11:03,224 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:11:03,647 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:11:04,060 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 21:11:04,315 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:11:04,581 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:11:04,839 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:11:05,096 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:11:05,315 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:11:06,218 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:11:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:08,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:08,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-12 21:11:08,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-12 21:11:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-12 21:11:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2018-10-12 21:11:08,671 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 63 states. [2018-10-12 21:11:10,205 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-10-12 21:11:10,603 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 21:11:11,055 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2018-10-12 21:11:11,574 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 21:11:12,054 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:11:12,426 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2018-10-12 21:11:12,825 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-12 21:11:13,245 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2018-10-12 21:11:13,773 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2018-10-12 21:11:14,256 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:11:14,842 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 187 [2018-10-12 21:11:15,494 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2018-10-12 21:11:16,300 WARN L178 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-12 21:11:17,134 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-12 21:11:17,968 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-12 21:11:18,588 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-12 21:11:19,337 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 186 [2018-10-12 21:11:20,041 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-12 21:11:20,799 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-12 21:11:21,585 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-12 21:11:22,146 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 180 [2018-10-12 21:11:22,765 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 175 [2018-10-12 21:11:23,393 WARN L178 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-12 21:11:24,123 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2018-10-12 21:11:24,837 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 188 [2018-10-12 21:11:25,401 WARN L178 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 175 [2018-10-12 21:11:26,002 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 174 [2018-10-12 21:11:26,656 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2018-10-12 21:11:27,363 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-12 21:11:28,076 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2018-10-12 21:11:28,632 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-12 21:11:29,267 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2018-10-12 21:11:29,937 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-12 21:11:30,640 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-12 21:11:31,354 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 181 [2018-10-12 21:11:31,893 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2018-10-12 21:11:32,471 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2018-10-12 21:11:33,052 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-12 21:11:33,671 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 169 [2018-10-12 21:11:34,334 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-12 21:11:34,884 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 155 [2018-10-12 21:11:35,448 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-12 21:11:36,013 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 159 [2018-10-12 21:11:36,592 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-12 21:11:37,200 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-12 21:11:37,727 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 148 [2018-10-12 21:11:38,265 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2018-10-12 21:11:38,645 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-12 21:11:39,008 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-10-12 21:11:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:39,033 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-12 21:11:39,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-12 21:11:39,033 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 196 [2018-10-12 21:11:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:39,035 INFO L225 Difference]: With dead ends: 221 [2018-10-12 21:11:39,036 INFO L226 Difference]: Without dead ends: 221 [2018-10-12 21:11:39,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=2873, Invalid=11647, Unknown=0, NotChecked=0, Total=14520 [2018-10-12 21:11:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-12 21:11:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2018-10-12 21:11:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-12 21:11:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-12 21:11:39,041 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 196 [2018-10-12 21:11:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:39,041 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-12 21:11:39,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-12 21:11:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-12 21:11:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-12 21:11:39,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:39,043 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:39,043 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:39,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1241963577, now seen corresponding path program 11 times [2018-10-12 21:11:39,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:40,629 WARN L178 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 67 [2018-10-12 21:11:41,253 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:11:41,867 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:11:42,490 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 68 [2018-10-12 21:11:43,113 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:11:43,744 WARN L178 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 65 [2018-10-12 21:11:44,378 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 63 [2018-10-12 21:11:45,245 WARN L178 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-12 21:11:46,033 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 76 [2018-10-12 21:11:46,754 WARN L178 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:11:47,474 WARN L178 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:11:48,195 WARN L178 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 21:11:48,904 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-12 21:11:49,464 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-12 21:11:50,099 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:11:50,640 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:11:51,189 WARN L178 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:11:51,792 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-12 21:11:52,098 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 21:11:52,398 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:11:52,711 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:11:53,010 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 21:11:53,354 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 21:11:53,609 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 21:11:53,850 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:11:54,084 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:11:54,328 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 21:11:54,614 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 21:11:54,839 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-10-12 21:11:55,060 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-10-12 21:11:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:58,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:58,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-12 21:11:58,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-12 21:11:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-12 21:11:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2018-10-12 21:11:58,473 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 67 states. [2018-10-12 21:12:00,830 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-12 21:12:01,173 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-12 21:12:01,691 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-12 21:12:02,277 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2018-10-12 21:12:03,107 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-10-12 21:12:03,713 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2018-10-12 21:12:04,159 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2018-10-12 21:12:04,713 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2018-10-12 21:12:05,626 WARN L178 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2018-10-12 21:12:06,695 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2018-10-12 21:12:07,609 WARN L178 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2018-10-12 21:12:08,277 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 199 [2018-10-12 21:12:08,995 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2018-10-12 21:12:09,858 WARN L178 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-12 21:12:10,988 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2018-10-12 21:12:11,984 WARN L178 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 214 [2018-10-12 21:12:12,643 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2018-10-12 21:12:13,373 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 197 [2018-10-12 21:12:14,216 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2018-10-12 21:12:15,126 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2018-10-12 21:12:16,142 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 229 [2018-10-12 21:12:16,756 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 197 [2018-10-12 21:12:17,410 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2018-10-12 21:12:18,186 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 197 [2018-10-12 21:12:19,042 WARN L178 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2018-10-12 21:12:19,895 WARN L178 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 203 [2018-10-12 21:12:20,577 WARN L178 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2018-10-12 21:12:21,212 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 185 [2018-10-12 21:12:21,998 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2018-10-12 21:12:22,874 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2018-10-12 21:12:23,771 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 208 [2018-10-12 21:12:24,386 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-12 21:12:25,021 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2018-10-12 21:12:25,834 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 184 [2018-10-12 21:12:26,655 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2018-10-12 21:12:27,471 WARN L178 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2018-10-12 21:12:28,085 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2018-10-12 21:12:28,710 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2018-10-12 21:12:29,436 WARN L178 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 183 [2018-10-12 21:12:30,224 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-10-12 21:12:31,066 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 189 [2018-10-12 21:12:31,676 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 174 [2018-10-12 21:12:32,282 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2018-10-12 21:12:32,941 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-10-12 21:12:33,657 WARN L178 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2018-10-12 21:12:34,392 WARN L178 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 180 [2018-10-12 21:12:34,973 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-12 21:12:35,535 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2018-10-12 21:12:36,242 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-12 21:12:36,881 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 169 [2018-10-12 21:12:37,535 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2018-10-12 21:12:38,110 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2018-10-12 21:12:38,657 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-10-12 21:12:39,075 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-10-12 21:12:39,458 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-12 21:12:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:39,527 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-12 21:12:39,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-12 21:12:39,528 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 209 [2018-10-12 21:12:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:39,530 INFO L225 Difference]: With dead ends: 234 [2018-10-12 21:12:39,530 INFO L226 Difference]: Without dead ends: 234 [2018-10-12 21:12:39,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3370 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=3233, Invalid=13537, Unknown=0, NotChecked=0, Total=16770 [2018-10-12 21:12:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-12 21:12:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2018-10-12 21:12:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-12 21:12:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-12 21:12:39,535 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 209 [2018-10-12 21:12:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:39,536 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-12 21:12:39,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-12 21:12:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-12 21:12:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-12 21:12:39,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:39,537 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:39,537 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:39,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1630981647, now seen corresponding path program 12 times [2018-10-12 21:12:39,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:41,936 WARN L178 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 76 [2018-10-12 21:12:42,923 WARN L178 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:12:43,995 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:12:45,086 WARN L178 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 74 [2018-10-12 21:12:46,266 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:12:47,367 WARN L178 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-10-12 21:12:48,507 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 69 [2018-10-12 21:12:49,727 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-12 21:12:51,019 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 411 DAG size of output: 85 [2018-10-12 21:12:52,302 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-12 21:12:53,517 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-12 21:12:54,706 WARN L178 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-12 21:12:55,711 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-12 21:12:56,594 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-12 21:12:57,395 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-12 21:12:58,198 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-12 21:12:58,990 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-12 21:12:59,753 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-12 21:13:00,266 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 21:13:00,777 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:13:01,296 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:13:01,845 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:13:02,374 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-12 21:13:02,801 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 21:13:03,201 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:13:03,608 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:13:04,002 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:13:04,402 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 21:13:04,680 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:13:04,960 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:13:05,243 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:13:05,518 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:13:05,755 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:13:06,383 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:13:06,664 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2018-10-12 21:13:06,891 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:13:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 894 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:09,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:09,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-12 21:13:09,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-12 21:13:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-12 21:13:09,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4652, Unknown=0, NotChecked=0, Total=5256 [2018-10-12 21:13:09,995 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 73 states. [2018-10-12 21:13:12,694 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-12 21:13:13,106 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-12 21:13:13,716 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-12 21:13:14,410 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2018-10-12 21:13:15,404 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2018-10-12 21:13:16,119 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2018-10-12 21:13:16,703 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2018-10-12 21:13:17,423 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2018-10-12 21:13:18,013 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 21:13:18,859 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2018-10-12 21:13:19,459 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2018-10-12 21:13:20,181 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 217 [2018-10-12 21:13:21,053 WARN L178 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 211 [2018-10-12 21:13:22,115 WARN L178 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 226 [2018-10-12 21:13:23,341 WARN L178 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 229 [2018-10-12 21:13:24,421 WARN L178 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 232 [2018-10-12 21:13:25,144 WARN L178 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 217 [2018-10-12 21:13:26,003 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 210 [2018-10-12 21:13:27,033 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-12 21:13:28,050 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-12 21:13:29,112 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 246 [2018-10-12 21:13:29,808 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 210 [2018-10-12 21:13:30,590 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2018-10-12 21:13:31,483 WARN L178 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2018-10-12 21:13:32,515 WARN L178 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-12 21:13:33,488 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-12 21:13:34,180 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-12 21:13:34,942 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2018-10-12 21:13:35,774 WARN L178 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 219 [2018-10-12 21:13:36,707 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-12 21:13:37,754 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-12 21:13:38,444 WARN L178 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 198 [2018-10-12 21:13:39,192 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2018-10-12 21:13:40,002 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2018-10-12 21:13:40,850 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 203 [2018-10-12 21:13:41,713 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2018-10-12 21:13:42,442 WARN L178 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2018-10-12 21:13:43,208 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2018-10-12 21:13:44,004 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2018-10-12 21:13:44,870 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2018-10-12 21:13:45,750 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 206 [2018-10-12 21:13:46,425 WARN L178 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-10-12 21:13:47,128 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2018-10-12 21:13:47,979 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2018-10-12 21:13:48,816 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 198 [2018-10-12 21:13:49,655 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2018-10-12 21:13:50,322 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-12 21:13:51,008 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2018-10-12 21:13:51,722 WARN L178 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 184 [2018-10-12 21:13:52,498 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2018-10-12 21:13:53,318 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2018-10-12 21:13:53,988 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2018-10-12 21:13:54,653 WARN L178 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2018-10-12 21:13:55,352 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 176 [2018-10-12 21:13:56,091 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 179 [2018-10-12 21:13:56,841 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 182 [2018-10-12 21:13:57,466 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2018-10-12 21:13:58,167 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2018-10-12 21:13:58,642 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-10-12 21:13:59,083 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-10-12 21:13:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:59,161 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-12 21:13:59,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-12 21:13:59,161 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 222 [2018-10-12 21:13:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:59,164 INFO L225 Difference]: With dead ends: 247 [2018-10-12 21:13:59,164 INFO L226 Difference]: Without dead ends: 247 [2018-10-12 21:13:59,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=3886, Invalid=15854, Unknown=0, NotChecked=0, Total=19740 [2018-10-12 21:13:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-12 21:13:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-10-12 21:13:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-12 21:13:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-12 21:13:59,170 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 222 [2018-10-12 21:13:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:59,170 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-12 21:13:59,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-12 21:13:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-12 21:13:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-12 21:13:59,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:59,172 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:13:59,172 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:59,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1218250745, now seen corresponding path program 13 times [2018-10-12 21:13:59,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:02,141 WARN L178 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 552 DAG size of output: 79 [2018-10-12 21:14:03,700 WARN L178 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:14:05,085 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:14:06,487 WARN L178 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 551 DAG size of output: 80 [2018-10-12 21:14:07,924 WARN L178 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:14:09,393 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 548 DAG size of output: 77 [2018-10-12 21:14:10,807 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 546 DAG size of output: 75 [2018-10-12 21:14:12,494 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 559 DAG size of output: 88 [2018-10-12 21:14:14,356 WARN L178 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 572 DAG size of output: 90 [2018-10-12 21:14:16,044 WARN L178 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-12 21:14:17,728 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 556 DAG size of output: 85 [2018-10-12 21:14:19,503 WARN L178 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 554 DAG size of output: 83 [2018-10-12 21:14:20,912 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 398 DAG size of output: 81 [2018-10-12 21:14:22,077 WARN L178 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 82 [2018-10-12 21:14:23,253 WARN L178 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-12 21:14:24,423 WARN L178 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 79 [2018-10-12 21:14:25,553 WARN L178 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 77 [2018-10-12 21:14:26,571 WARN L178 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 75 [2018-10-12 21:14:27,303 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 74 [2018-10-12 21:14:28,022 WARN L178 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:14:28,846 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 71 [2018-10-12 21:14:29,562 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 69 [2018-10-12 21:14:30,259 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 67 [2018-10-12 21:14:30,824 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 68 [2018-10-12 21:14:31,383 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:14:31,955 WARN L178 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2018-10-12 21:14:32,506 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 63 [2018-10-12 21:14:33,108 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 61 [2018-10-12 21:14:33,474 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-12 21:14:33,865 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:14:34,201 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2018-10-12 21:14:34,535 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2018-10-12 21:14:34,912 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2018-10-12 21:14:35,173 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2018-10-12 21:14:35,436 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:14:35,700 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2018-10-12 21:14:35,962 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2018-10-12 21:14:36,267 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-10-12 21:14:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:40,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:40,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-10-12 21:14:40,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-12 21:14:40,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-12 21:14:40,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2018-10-12 21:14:40,839 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 77 states. [2018-10-12 21:14:43,563 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-12 21:14:44,089 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2018-10-12 21:14:44,728 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-10-12 21:14:45,440 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-10-12 21:14:46,473 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-10-12 21:14:47,207 WARN L178 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-10-12 21:14:47,791 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2018-10-12 21:14:48,493 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-10-12 21:14:49,607 WARN L178 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 239 [2018-10-12 21:14:51,043 WARN L178 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 242 [2018-10-12 21:14:52,225 WARN L178 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 245 [2018-10-12 21:14:53,038 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2018-10-12 21:14:54,009 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 229 [2018-10-12 21:14:55,047 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 236 [2018-10-12 21:14:56,333 WARN L178 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 239 [2018-10-12 21:14:57,512 WARN L178 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 242 [2018-10-12 21:14:58,276 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 231 [2018-10-12 21:14:59,279 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2018-10-12 21:15:00,441 WARN L178 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 262 [2018-10-12 21:15:01,813 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 263 [2018-10-12 21:15:03,078 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 287 DAG size of output: 266 [2018-10-12 21:15:03,853 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 225 [2018-10-12 21:15:04,879 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 217 [2018-10-12 21:15:05,961 WARN L178 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 230 [2018-10-12 21:15:07,324 WARN L178 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 233 [2018-10-12 21:15:08,567 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 261 DAG size of output: 236 [2018-10-12 21:15:09,388 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 225 [2018-10-12 21:15:10,324 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 219 [2018-10-12 21:15:11,364 WARN L178 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 246 [2018-10-12 21:15:12,456 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 247 [2018-10-12 21:15:13,619 WARN L178 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 250 [2018-10-12 21:15:14,402 WARN L178 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 218 [2018-10-12 21:15:15,280 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 213 [2018-10-12 21:15:16,228 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 218 [2018-10-12 21:15:17,285 WARN L178 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 221 [2018-10-12 21:15:18,336 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 224 [2018-10-12 21:15:19,094 WARN L178 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 213 [2018-10-12 21:15:20,009 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2018-10-12 21:15:20,988 WARN L178 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 228 [2018-10-12 21:15:22,113 WARN L178 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 229 [2018-10-12 21:15:23,295 WARN L178 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 232 [2018-10-12 21:15:24,062 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2018-10-12 21:15:24,972 WARN L178 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2018-10-12 21:15:25,878 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 206 [2018-10-12 21:15:26,882 WARN L178 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-10-12 21:15:27,894 WARN L178 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 212 [2018-10-12 21:15:28,643 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 201 [2018-10-12 21:15:29,433 WARN L178 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2018-10-12 21:15:30,377 WARN L178 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2018-10-12 21:15:31,314 WARN L178 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 211 [2018-10-12 21:15:32,295 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 214 [2018-10-12 21:15:33,022 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 195 [2018-10-12 21:15:33,751 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2018-10-12 21:15:34,560 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2018-10-12 21:15:35,476 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2018-10-12 21:15:36,311 WARN L178 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 199 [2018-10-12 21:15:36,989 WARN L178 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2018-10-12 21:15:37,713 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-10-12 21:15:38,407 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 185 [2018-10-12 21:15:39,143 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2018-10-12 21:15:39,920 WARN L178 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2018-10-12 21:15:40,660 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 175 [2018-10-12 21:15:41,349 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2018-10-12 21:15:41,856 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2018-10-12 21:15:42,344 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-10-12 21:15:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:42,430 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-12 21:15:42,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-12 21:15:42,430 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 235 [2018-10-12 21:15:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:42,432 INFO L225 Difference]: With dead ends: 260 [2018-10-12 21:15:42,432 INFO L226 Difference]: Without dead ends: 260 [2018-10-12 21:15:42,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=3811, Invalid=18539, Unknown=0, NotChecked=0, Total=22350 [2018-10-12 21:15:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-12 21:15:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 249. [2018-10-12 21:15:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-12 21:15:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-12 21:15:42,438 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 235 [2018-10-12 21:15:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:42,438 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-12 21:15:42,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-12 21:15:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-12 21:15:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-12 21:15:42,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:42,440 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 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] [2018-10-12 21:15:42,440 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:42,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash -308954545, now seen corresponding path program 14 times [2018-10-12 21:15:42,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:47,445 WARN L178 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 808 DAG size of output: 86 [2018-10-12 21:15:49,997 WARN L178 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 803 DAG size of output: 83 [2018-10-12 21:15:52,796 WARN L178 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-12 21:15:55,535 WARN L178 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 806 DAG size of output: 88 [2018-10-12 21:15:58,204 WARN L178 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-12 21:16:00,981 WARN L178 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 803 DAG size of output: 85 [2018-10-12 21:16:03,633 WARN L178 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 801 DAG size of output: 81 [2018-10-12 21:16:06,716 WARN L178 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 815 DAG size of output: 97 [2018-10-12 21:16:09,850 WARN L178 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 828 DAG size of output: 99 [2018-10-12 21:16:12,883 WARN L178 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-12 21:16:15,909 WARN L178 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 812 DAG size of output: 94 [2018-10-12 21:16:18,898 WARN L178 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 810 DAG size of output: 92 [2018-10-12 21:16:21,283 WARN L178 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 576 DAG size of output: 87 [2018-10-12 21:16:23,174 WARN L178 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 558 DAG size of output: 88 [2018-10-12 21:16:25,029 WARN L178 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-12 21:16:26,928 WARN L178 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 555 DAG size of output: 85 [2018-10-12 21:16:28,777 WARN L178 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 553 DAG size of output: 83 [2018-10-12 21:16:30,429 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 434 DAG size of output: 84 [2018-10-12 21:16:31,790 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 398 DAG size of output: 83 [2018-10-12 21:16:33,038 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-12 21:16:34,281 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 395 DAG size of output: 80 [2018-10-12 21:16:35,533 WARN L178 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 78 [2018-10-12 21:16:36,685 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 76 [2018-10-12 21:16:37,525 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2018-10-12 21:16:38,363 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-12 21:16:39,213 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 74 [2018-10-12 21:16:40,038 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 72 [2018-10-12 21:16:40,870 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 67 [2018-10-12 21:16:41,458 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2018-10-12 21:16:42,066 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:16:42,615 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 65 [2018-10-12 21:16:43,168 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 63 [2018-10-12 21:16:43,748 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 59 [2018-10-12 21:16:44,197 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2018-10-12 21:16:44,638 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:16:45,078 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 59 [2018-10-12 21:16:45,513 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 57 [2018-10-12 21:16:45,945 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 55 [2018-10-12 21:16:46,251 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 21:16:46,593 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:16:46,944 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-10-12 21:16:47,250 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-10-12 21:16:47,516 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-10-12 21:16:48,661 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-12 21:16:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:16:52,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:16:52,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-12 21:16:52,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-12 21:16:52,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-12 21:16:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=5983, Unknown=0, NotChecked=0, Total=6806 [2018-10-12 21:16:52,548 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 83 states. [2018-10-12 21:16:54,386 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-10-12 21:16:54,824 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-10-12 21:16:55,437 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2018-10-12 21:16:56,151 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2018-10-12 21:16:57,088 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-10-12 21:16:57,881 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-10-12 21:16:58,468 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2018-10-12 21:16:59,686 WARN L178 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2018-10-12 21:17:00,361 WARN L178 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2018-10-12 21:17:01,192 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2018-10-12 21:17:01,909 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2018-10-12 21:17:02,809 WARN L178 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 248 [2018-10-12 21:17:03,773 WARN L178 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 244 [2018-10-12 21:17:04,911 WARN L178 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2018-10-12 21:17:06,237 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 263 DAG size of output: 260 [2018-10-12 21:17:07,614 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 266 DAG size of output: 263 [2018-10-12 21:17:08,473 WARN L178 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 246 [2018-10-12 21:17:09,447 WARN L178 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2018-10-12 21:17:10,620 WARN L178 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 278 [2018-10-12 21:17:11,899 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2018-10-12 21:17:13,242 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 284 [2018-10-12 21:17:14,048 WARN L178 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 241 [2018-10-12 21:17:14,982 WARN L178 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2018-10-12 21:17:16,048 WARN L178 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 244 [2018-10-12 21:17:17,229 WARN L178 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 247 [2018-10-12 21:17:18,422 WARN L178 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 250 [2018-10-12 21:17:19,257 WARN L178 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 235 [2018-10-12 21:17:20,172 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 228 [2018-10-12 21:17:21,224 WARN L178 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 258 [2018-10-12 21:17:22,310 WARN L178 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 261 [2018-10-12 21:17:23,470 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 264 [2018-10-12 21:17:24,276 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 228 [2018-10-12 21:17:25,184 WARN L178 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 225 [2018-10-12 21:17:26,190 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 233 [2018-10-12 21:17:27,241 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 236 [2018-10-12 21:17:28,378 WARN L178 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 239 [2018-10-12 21:17:29,190 WARN L178 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2018-10-12 21:17:30,083 WARN L178 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 222 [2018-10-12 21:17:31,020 WARN L178 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2018-10-12 21:17:32,023 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 240 [2018-10-12 21:17:33,058 WARN L178 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 243 [2018-10-12 21:17:33,885 WARN L178 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 216 [2018-10-12 21:17:34,755 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 211 [2018-10-12 21:17:35,666 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2018-10-12 21:17:36,607 WARN L178 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2018-10-12 21:17:37,576 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-10-12 21:17:38,410 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 211 [2018-10-12 21:17:39,263 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 210 [2018-10-12 21:17:40,166 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2018-10-12 21:17:41,126 WARN L178 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 221 [2018-10-12 21:17:42,109 WARN L178 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 224 [2018-10-12 21:17:42,923 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 205 [2018-10-12 21:17:43,770 WARN L178 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200