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/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:54:30,025 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:54:30,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:54:30,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:54:30,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:54:30,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:54:30,043 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:54:30,045 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:54:30,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:54:30,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:54:30,048 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 20:54:30,072 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:54:30,087 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:54:30,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:54:30,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:54:30,089 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:54:30,089 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:54:30,089 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:54:30,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:54:30,090 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:54:30,090 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:54:30,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:54:30,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:54:30,091 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:54:30,091 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:54:30,092 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:54:30,092 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:54:30,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:54:30,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:54:30,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:54:30,164 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:54:30,164 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:54:30,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl [2018-10-12 20:54:30,166 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl' [2018-10-12 20:54:30,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:54:30,281 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:54:30,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:54:30,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:54:30,282 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:54:30,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:54:30,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:54:30,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:54:30,357 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:54:30,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 20:54:30,426 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:54:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:54:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:54:31,361 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:54:31,361 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:54:31 BoogieIcfgContainer [2018-10-12 20:54:31,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:54:31,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:54:31,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:54:31,367 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:54:31,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:54:30" (1/2) ... [2018-10-12 20:54:31,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56eab1f6 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:54:31, skipping insertion in model container [2018-10-12 20:54:31,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:54:31" (2/2) ... [2018-10-12 20:54:31,371 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_46.bpl [2018-10-12 20:54:31,381 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:54:31,392 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:54:31,407 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:54:31,436 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:54:31,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:54:31,437 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:54:31,437 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:54:31,437 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:54:31,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:54:31,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:54:31,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:54:31,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:54:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-10-12 20:54:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-12 20:54:31,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:31,472 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] [2018-10-12 20:54:31,473 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:31,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:31,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2104295803, now seen corresponding path program 1 times [2018-10-12 20:54:31,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:32,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:32,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:54:32,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:54:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:54:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:54:32,261 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 9 states. [2018-10-12 20:54:32,909 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-12 20:54:33,205 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-12 20:54:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:34,192 INFO L93 Difference]: Finished difference Result 254 states and 261 transitions. [2018-10-12 20:54:34,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:54:34,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-10-12 20:54:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:34,211 INFO L225 Difference]: With dead ends: 254 [2018-10-12 20:54:34,211 INFO L226 Difference]: Without dead ends: 254 [2018-10-12 20:54:34,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-12 20:54:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-12 20:54:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 144. [2018-10-12 20:54:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-12 20:54:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2018-10-12 20:54:34,264 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 37 [2018-10-12 20:54:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:34,265 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2018-10-12 20:54:34,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:54:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2018-10-12 20:54:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-12 20:54:34,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:34,270 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] [2018-10-12 20:54:34,270 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:34,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1186914123, now seen corresponding path program 1 times [2018-10-12 20:54:34,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:34,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:34,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:54:34,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:54:34,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:54:34,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:54:34,380 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand 3 states. [2018-10-12 20:54:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:34,456 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-12 20:54:34,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:54:34,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-12 20:54:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:34,460 INFO L225 Difference]: With dead ends: 222 [2018-10-12 20:54:34,460 INFO L226 Difference]: Without dead ends: 222 [2018-10-12 20:54:34,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:54:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-12 20:54:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-10-12 20:54:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-12 20:54:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 205 transitions. [2018-10-12 20:54:34,478 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 205 transitions. Word has length 69 [2018-10-12 20:54:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:34,478 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 205 transitions. [2018-10-12 20:54:34,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:54:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 205 transitions. [2018-10-12 20:54:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-12 20:54:34,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:34,482 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] [2018-10-12 20:54:34,482 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:34,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:34,482 INFO L82 PathProgramCache]: Analyzing trace with hash 564493707, now seen corresponding path program 1 times [2018-10-12 20:54:34,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:34,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:34,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:54:34,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:54:34,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:54:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:54:34,716 INFO L87 Difference]: Start difference. First operand 199 states and 205 transitions. Second operand 9 states. [2018-10-12 20:54:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:35,426 INFO L93 Difference]: Finished difference Result 290 states and 295 transitions. [2018-10-12 20:54:35,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:54:35,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-10-12 20:54:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:35,432 INFO L225 Difference]: With dead ends: 290 [2018-10-12 20:54:35,432 INFO L226 Difference]: Without dead ends: 258 [2018-10-12 20:54:35,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:54:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-12 20:54:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2018-10-12 20:54:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-12 20:54:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2018-10-12 20:54:35,458 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 69 [2018-10-12 20:54:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:35,459 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2018-10-12 20:54:35,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:54:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2018-10-12 20:54:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-12 20:54:35,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:35,462 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:35,463 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:35,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2096144281, now seen corresponding path program 1 times [2018-10-12 20:54:35,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:35,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:35,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-12 20:54:35,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:54:35,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:54:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:54:35,786 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand 11 states. [2018-10-12 20:54:36,402 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2018-10-12 20:54:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:37,210 INFO L93 Difference]: Finished difference Result 405 states and 413 transitions. [2018-10-12 20:54:37,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-12 20:54:37,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2018-10-12 20:54:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:37,216 INFO L225 Difference]: With dead ends: 405 [2018-10-12 20:54:37,216 INFO L226 Difference]: Without dead ends: 405 [2018-10-12 20:54:37,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:54:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-10-12 20:54:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 242. [2018-10-12 20:54:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-12 20:54:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 248 transitions. [2018-10-12 20:54:37,229 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 248 transitions. Word has length 80 [2018-10-12 20:54:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:37,230 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 248 transitions. [2018-10-12 20:54:37,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:54:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 248 transitions. [2018-10-12 20:54:37,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-12 20:54:37,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:37,235 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:37,235 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:37,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1496394871, now seen corresponding path program 1 times [2018-10-12 20:54:37,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:38,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:38,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 20:54:38,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 20:54:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 20:54:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-10-12 20:54:38,893 INFO L87 Difference]: Start difference. First operand 242 states and 248 transitions. Second operand 29 states. [2018-10-12 20:54:40,493 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 20:54:40,781 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 20:54:41,070 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 20:54:41,377 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 20:54:41,732 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2018-10-12 20:54:43,318 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-10-12 20:54:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:44,438 INFO L93 Difference]: Finished difference Result 420 states and 430 transitions. [2018-10-12 20:54:44,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-12 20:54:44,440 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2018-10-12 20:54:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:44,443 INFO L225 Difference]: With dead ends: 420 [2018-10-12 20:54:44,443 INFO L226 Difference]: Without dead ends: 420 [2018-10-12 20:54:44,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=538, Invalid=3002, Unknown=0, NotChecked=0, Total=3540 [2018-10-12 20:54:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-10-12 20:54:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 274. [2018-10-12 20:54:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-12 20:54:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 280 transitions. [2018-10-12 20:54:44,454 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 280 transitions. Word has length 112 [2018-10-12 20:54:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:44,455 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 280 transitions. [2018-10-12 20:54:44,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 20:54:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 280 transitions. [2018-10-12 20:54:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-12 20:54:44,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:44,458 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:44,459 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:44,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash -418991333, now seen corresponding path program 1 times [2018-10-12 20:54:44,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:45,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:45,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-12 20:54:45,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-12 20:54:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-12 20:54:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-10-12 20:54:45,291 INFO L87 Difference]: Start difference. First operand 274 states and 280 transitions. Second operand 16 states. [2018-10-12 20:54:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:47,074 INFO L93 Difference]: Finished difference Result 597 states and 611 transitions. [2018-10-12 20:54:47,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 20:54:47,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2018-10-12 20:54:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:47,080 INFO L225 Difference]: With dead ends: 597 [2018-10-12 20:54:47,080 INFO L226 Difference]: Without dead ends: 597 [2018-10-12 20:54:47,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2018-10-12 20:54:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2018-10-12 20:54:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 372. [2018-10-12 20:54:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-10-12 20:54:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 381 transitions. [2018-10-12 20:54:47,091 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 381 transitions. Word has length 123 [2018-10-12 20:54:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:47,092 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 381 transitions. [2018-10-12 20:54:47,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-12 20:54:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 381 transitions. [2018-10-12 20:54:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-12 20:54:47,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:47,096 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:47,096 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:47,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1471683143, now seen corresponding path program 1 times [2018-10-12 20:54:47,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:47,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:47,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-12 20:54:47,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-12 20:54:47,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-12 20:54:47,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:54:47,881 INFO L87 Difference]: Start difference. First operand 372 states and 381 transitions. Second operand 25 states. [2018-10-12 20:54:49,858 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-10-12 20:54:50,633 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-10-12 20:54:50,773 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-12 20:54:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:50,996 INFO L93 Difference]: Finished difference Result 411 states and 419 transitions. [2018-10-12 20:54:51,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-12 20:54:51,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2018-10-12 20:54:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:51,008 INFO L225 Difference]: With dead ends: 411 [2018-10-12 20:54:51,008 INFO L226 Difference]: Without dead ends: 359 [2018-10-12 20:54:51,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 20:54:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-12 20:54:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 326. [2018-10-12 20:54:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-12 20:54:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 334 transitions. [2018-10-12 20:54:51,017 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 334 transitions. Word has length 144 [2018-10-12 20:54:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:51,018 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 334 transitions. [2018-10-12 20:54:51,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-12 20:54:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 334 transitions. [2018-10-12 20:54:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-12 20:54:51,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:51,020 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:54:51,020 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:51,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1223643349, now seen corresponding path program 1 times [2018-10-12 20:54:51,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:52,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:52,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-12 20:54:52,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-12 20:54:52,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-12 20:54:52,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2018-10-12 20:54:52,576 INFO L87 Difference]: Start difference. First operand 326 states and 334 transitions. Second operand 40 states. [2018-10-12 20:54:54,650 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-12 20:54:54,900 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 20:54:55,238 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2018-10-12 20:54:55,555 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-12 20:55:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:01,275 INFO L93 Difference]: Finished difference Result 506 states and 518 transitions. [2018-10-12 20:55:01,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-12 20:55:01,275 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 155 [2018-10-12 20:55:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:01,278 INFO L225 Difference]: With dead ends: 506 [2018-10-12 20:55:01,278 INFO L226 Difference]: Without dead ends: 506 [2018-10-12 20:55:01,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=910, Invalid=7462, Unknown=0, NotChecked=0, Total=8372 [2018-10-12 20:55:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-10-12 20:55:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 358. [2018-10-12 20:55:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-12 20:55:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 366 transitions. [2018-10-12 20:55:01,289 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 366 transitions. Word has length 155 [2018-10-12 20:55:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:01,290 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 366 transitions. [2018-10-12 20:55:01,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-12 20:55:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 366 transitions. [2018-10-12 20:55:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-12 20:55:01,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:01,292 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-12 20:55:01,292 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:01,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1133319481, now seen corresponding path program 2 times [2018-10-12 20:55:01,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:01,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:01,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 20:55:01,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 20:55:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 20:55:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-10-12 20:55:01,883 INFO L87 Difference]: Start difference. First operand 358 states and 366 transitions. Second operand 22 states. [2018-10-12 20:55:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:04,227 INFO L93 Difference]: Finished difference Result 451 states and 459 transitions. [2018-10-12 20:55:04,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-12 20:55:04,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2018-10-12 20:55:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:04,230 INFO L225 Difference]: With dead ends: 451 [2018-10-12 20:55:04,230 INFO L226 Difference]: Without dead ends: 451 [2018-10-12 20:55:04,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2018-10-12 20:55:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-10-12 20:55:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2018-10-12 20:55:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-12 20:55:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 369 transitions. [2018-10-12 20:55:04,240 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 369 transitions. Word has length 166 [2018-10-12 20:55:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:04,241 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 369 transitions. [2018-10-12 20:55:04,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 20:55:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 369 transitions. [2018-10-12 20:55:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-12 20:55:04,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:04,244 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:04,244 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:04,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2101359365, now seen corresponding path program 1 times [2018-10-12 20:55:04,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:07,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:07,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-12 20:55:07,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-12 20:55:07,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-12 20:55:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2333, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 20:55:07,805 INFO L87 Difference]: Start difference. First operand 361 states and 369 transitions. Second operand 50 states. [2018-10-12 20:55:10,639 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-12 20:55:11,006 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-12 20:55:11,335 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2018-10-12 20:55:11,543 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-12 20:55:12,108 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-12 20:55:12,397 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-12 20:55:12,751 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-12 20:55:13,641 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-12 20:55:13,791 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-10-12 20:55:13,995 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2018-10-12 20:55:14,319 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2018-10-12 20:55:15,426 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-12 20:55:15,719 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2018-10-12 20:55:16,169 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 20:55:16,453 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2018-10-12 20:55:16,784 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 20:55:19,801 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2018-10-12 20:55:21,500 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2018-10-12 20:55:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:23,424 INFO L93 Difference]: Finished difference Result 573 states and 586 transitions. [2018-10-12 20:55:23,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-12 20:55:23,424 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 187 [2018-10-12 20:55:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:23,427 INFO L225 Difference]: With dead ends: 573 [2018-10-12 20:55:23,427 INFO L226 Difference]: Without dead ends: 573 [2018-10-12 20:55:23,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3913 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1141, Invalid=14609, Unknown=0, NotChecked=0, Total=15750 [2018-10-12 20:55:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2018-10-12 20:55:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 414. [2018-10-12 20:55:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-10-12 20:55:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 423 transitions. [2018-10-12 20:55:23,442 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 423 transitions. Word has length 187 [2018-10-12 20:55:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:23,442 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 423 transitions. [2018-10-12 20:55:23,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-12 20:55:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 423 transitions. [2018-10-12 20:55:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-12 20:55:23,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:23,446 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:23,446 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:23,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1026345257, now seen corresponding path program 2 times [2018-10-12 20:55:23,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:24,282 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:55:24,505 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:55:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:26,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:26,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-12 20:55:26,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-12 20:55:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-12 20:55:26,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2143, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 20:55:26,606 INFO L87 Difference]: Start difference. First operand 414 states and 423 transitions. Second operand 48 states. [2018-10-12 20:55:28,726 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 35 [2018-10-12 20:55:28,984 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 47 [2018-10-12 20:55:29,324 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 56 [2018-10-12 20:55:29,602 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 60 [2018-10-12 20:55:29,974 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 66 [2018-10-12 20:55:30,320 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 70 [2018-10-12 20:55:30,792 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 96 [2018-10-12 20:55:31,133 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2018-10-12 20:55:31,523 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 96 [2018-10-12 20:55:32,059 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 100 [2018-10-12 20:55:32,484 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-12 20:55:32,893 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 102 [2018-10-12 20:55:33,684 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 106 [2018-10-12 20:55:34,313 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 112 [2018-10-12 20:55:34,836 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 104 [2018-10-12 20:55:35,075 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 20:55:35,399 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-12 20:55:35,770 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-12 20:55:36,117 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-12 20:55:36,430 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-12 20:55:36,795 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-12 20:55:37,154 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-12 20:55:37,434 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2018-10-12 20:55:37,684 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-10-12 20:55:38,006 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-12 20:55:38,268 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-12 20:55:38,586 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2018-10-12 20:55:38,989 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 20:55:39,199 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2018-10-12 20:55:39,450 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-12 20:55:39,679 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2018-10-12 20:55:39,970 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-12 20:55:40,274 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 20:55:40,660 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2018-10-12 20:55:40,963 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2018-10-12 20:55:41,297 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-12 20:55:41,611 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2018-10-12 20:55:41,991 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-12 20:55:42,268 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 20:55:42,422 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 20:55:42,978 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2018-10-12 20:55:44,178 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-12 20:55:44,552 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2018-10-12 20:55:45,031 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2018-10-12 20:55:45,507 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2018-10-12 20:55:46,004 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 114 [2018-10-12 20:55:46,430 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2018-10-12 20:55:46,831 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2018-10-12 20:55:47,542 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2018-10-12 20:55:48,299 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 112 [2018-10-12 20:55:48,887 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2018-10-12 20:55:49,377 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 116 [2018-10-12 20:55:49,877 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 121 [2018-10-12 20:55:50,124 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-12 20:55:50,310 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-12 20:55:50,521 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2018-10-12 20:55:51,206 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 119 [2018-10-12 20:55:52,383 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2018-10-12 20:55:53,056 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2018-10-12 20:55:53,542 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2018-10-12 20:55:53,841 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 20:55:54,060 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 20:55:54,759 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2018-10-12 20:55:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:54,798 INFO L93 Difference]: Finished difference Result 754 states and 768 transitions. [2018-10-12 20:55:54,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-12 20:55:54,798 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 198 [2018-10-12 20:55:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:54,803 INFO L225 Difference]: With dead ends: 754 [2018-10-12 20:55:54,803 INFO L226 Difference]: Without dead ends: 754 [2018-10-12 20:55:54,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5279 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=2720, Invalid=17020, Unknown=0, NotChecked=0, Total=19740 [2018-10-12 20:55:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-12 20:55:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 481. [2018-10-12 20:55:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-12 20:55:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 492 transitions. [2018-10-12 20:55:54,818 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 492 transitions. Word has length 198 [2018-10-12 20:55:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:54,819 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 492 transitions. [2018-10-12 20:55:54,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-12 20:55:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 492 transitions. [2018-10-12 20:55:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-12 20:55:54,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:54,822 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:54,822 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:54,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1097218793, now seen corresponding path program 3 times [2018-10-12 20:55:54,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-12 20:55:54,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:55:54,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:55:54,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:55:54,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:55:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:55:54,917 INFO L87 Difference]: Start difference. First operand 481 states and 492 transitions. Second operand 3 states. [2018-10-12 20:55:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:54,979 INFO L93 Difference]: Finished difference Result 453 states and 457 transitions. [2018-10-12 20:55:54,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:55:54,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-10-12 20:55:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:54,982 INFO L225 Difference]: With dead ends: 453 [2018-10-12 20:55:54,983 INFO L226 Difference]: Without dead ends: 453 [2018-10-12 20:55:54,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:55:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-12 20:55:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 438. [2018-10-12 20:55:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-10-12 20:55:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 443 transitions. [2018-10-12 20:55:54,991 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 443 transitions. Word has length 198 [2018-10-12 20:55:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:54,991 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 443 transitions. [2018-10-12 20:55:54,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:55:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 443 transitions. [2018-10-12 20:55:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-12 20:55:54,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:54,994 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:55:54,995 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:54,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1558857995, now seen corresponding path program 2 times [2018-10-12 20:55:54,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 30 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:55:57,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:57,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-12 20:55:57,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-12 20:55:57,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-12 20:55:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2536, Unknown=0, NotChecked=0, Total=2652 [2018-10-12 20:55:57,556 INFO L87 Difference]: Start difference. First operand 438 states and 443 transitions. Second operand 52 states. [2018-10-12 20:55:58,376 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-12 20:55:58,577 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 20:55:58,740 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:55:59,258 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 20:55:59,438 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-12 20:55:59,698 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 20:55:59,913 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-12 20:56:00,231 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-12 20:56:00,787 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-12 20:56:01,126 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-12 20:56:01,346 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-12 20:56:01,768 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-12 20:56:02,032 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 20:56:05,170 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-12 20:56:05,387 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2018-10-12 20:56:05,586 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 20:56:05,866 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 20:56:06,065 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-12 20:56:06,315 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-12 20:56:06,595 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2018-10-12 20:56:06,831 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-12 20:56:07,065 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2018-10-12 20:56:07,298 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-12 20:56:07,867 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-12 20:56:08,179 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-12 20:56:08,474 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2018-10-12 20:56:08,818 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 20:56:09,074 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-12 20:56:09,360 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-10-12 20:56:10,297 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2018-10-12 20:56:12,245 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-12 20:56:12,632 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-10-12 20:56:12,999 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2018-10-12 20:56:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:13,307 INFO L93 Difference]: Finished difference Result 459 states and 463 transitions. [2018-10-12 20:56:13,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-12 20:56:13,308 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 219 [2018-10-12 20:56:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:13,309 INFO L225 Difference]: With dead ends: 459 [2018-10-12 20:56:13,310 INFO L226 Difference]: Without dead ends: 363 [2018-10-12 20:56:13,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1252, Invalid=14498, Unknown=0, NotChecked=0, Total=15750 [2018-10-12 20:56:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-12 20:56:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-12 20:56:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-12 20:56:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2018-10-12 20:56:13,317 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 219 [2018-10-12 20:56:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:13,317 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 367 transitions. [2018-10-12 20:56:13,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-12 20:56:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 367 transitions. [2018-10-12 20:56:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-12 20:56:13,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:13,321 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:56:13,321 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:13,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:13,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1469621415, now seen corresponding path program 3 times [2018-10-12 20:56:13,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:56:18,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:18,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-12 20:56:18,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-12 20:56:18,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-12 20:56:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3865, Unknown=0, NotChecked=0, Total=4032 [2018-10-12 20:56:18,913 INFO L87 Difference]: Start difference. First operand 363 states and 367 transitions. Second operand 64 states. [2018-10-12 20:56:19,959 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 25 [2018-10-12 20:56:20,210 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 28 [2018-10-12 20:56:20,480 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 32 [2018-10-12 20:56:20,717 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 27 [2018-10-12 20:56:20,943 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 19 [2018-10-12 20:56:21,166 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 22 [2018-10-12 20:56:21,419 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 27 [2018-10-12 20:56:21,692 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 29 [2018-10-12 20:56:22,005 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 32 [2018-10-12 20:56:22,311 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 39 [2018-10-12 20:56:22,637 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 46 [2018-10-12 20:56:23,147 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 60 [2018-10-12 20:56:23,737 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 71 [2018-10-12 20:56:24,207 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 77 [2018-10-12 20:56:24,808 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 81 [2018-10-12 20:56:25,434 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 85 [2018-10-12 20:56:25,819 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 46 [2018-10-12 20:56:26,097 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 42 [2018-10-12 20:56:26,477 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 46 [2018-10-12 20:56:26,840 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 48 [2018-10-12 20:56:27,362 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-10-12 20:56:27,580 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-10-12 20:56:27,772 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-12 20:56:27,990 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-10-12 20:56:28,256 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-12 20:56:28,451 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-12 20:56:28,691 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-10-12 20:56:28,964 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-12 20:56:29,297 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2018-10-12 20:56:29,665 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2018-10-12 20:56:30,106 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 112 [2018-10-12 20:56:30,384 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 20:56:30,716 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-12 20:56:31,115 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2018-10-12 20:56:31,541 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2018-10-12 20:56:32,045 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 109 [2018-10-12 20:56:32,491 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 112 [2018-10-12 20:56:32,737 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2018-10-12 20:56:32,941 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-12 20:56:33,255 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-12 20:56:33,611 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2018-10-12 20:56:33,890 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-12 20:56:34,351 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 50 [2018-10-12 20:56:34,683 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 57 [2018-10-12 20:56:34,947 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 52 [2018-10-12 20:56:35,194 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 34 [2018-10-12 20:56:35,464 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 42 [2018-10-12 20:56:35,753 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 46 [2018-10-12 20:56:36,036 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 48 [2018-10-12 20:56:36,414 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 51 [2018-10-12 20:56:36,807 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 66 [2018-10-12 20:56:37,208 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 68 [2018-10-12 20:56:37,608 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 71 [2018-10-12 20:56:38,002 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 45 [2018-10-12 20:56:38,422 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 60 [2018-10-12 20:56:38,943 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 51 [2018-10-12 20:56:39,739 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 66 [2018-10-12 20:56:41,018 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 80 [2018-10-12 20:56:41,616 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 90 [2018-10-12 20:56:42,110 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 100 [2018-10-12 20:56:42,603 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 95 [2018-10-12 20:56:43,024 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 85 [2018-10-12 20:56:43,495 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 87 [2018-10-12 20:56:44,761 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 11 [2018-10-12 20:56:45,044 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 15 [2018-10-12 20:56:45,360 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 17 [2018-10-12 20:56:47,309 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 77 [2018-10-12 20:56:47,951 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 68 [2018-10-12 20:56:48,455 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 63 [2018-10-12 20:56:48,838 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 58 [2018-10-12 20:56:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:49,044 INFO L93 Difference]: Finished difference Result 521 states and 524 transitions. [2018-10-12 20:56:49,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-12 20:56:49,044 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 230 [2018-10-12 20:56:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:49,047 INFO L225 Difference]: With dead ends: 521 [2018-10-12 20:56:49,047 INFO L226 Difference]: Without dead ends: 521 [2018-10-12 20:56:49,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5883 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=2811, Invalid=19839, Unknown=0, NotChecked=0, Total=22650 [2018-10-12 20:56:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2018-10-12 20:56:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 392. [2018-10-12 20:56:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-10-12 20:56:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 396 transitions. [2018-10-12 20:56:49,055 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 396 transitions. Word has length 230 [2018-10-12 20:56:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:49,056 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 396 transitions. [2018-10-12 20:56:49,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-12 20:56:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 396 transitions. [2018-10-12 20:56:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-12 20:56:49,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:49,058 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:56:49,058 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:49,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:49,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1326192437, now seen corresponding path program 4 times [2018-10-12 20:56:49,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:49,915 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:56:50,109 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 20:56:52,695 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-12 20:56:58,036 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-10-12 20:56:58,282 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-12 20:57:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:57:02,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:57:02,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-12 20:57:02,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-12 20:57:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-12 20:57:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=8197, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 20:57:02,209 INFO L87 Difference]: Start difference. First operand 392 states and 396 transitions. Second operand 93 states. [2018-10-12 20:57:04,289 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 39 [2018-10-12 20:57:04,804 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 46 [2018-10-12 20:57:05,244 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 38 [2018-10-12 20:57:05,633 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 23 [2018-10-12 20:57:06,021 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 26 [2018-10-12 20:57:06,433 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 29 [2018-10-12 20:57:06,800 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 31 [2018-10-12 20:57:07,294 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 38 [2018-10-12 20:57:07,773 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 45 [2018-10-12 20:57:08,286 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 52 [2018-10-12 20:57:08,975 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 66 [2018-10-12 20:57:09,626 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 68 [2018-10-12 20:57:10,502 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 79 [2018-10-12 20:57:11,225 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 83 [2018-10-12 20:57:12,237 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 89 [2018-10-12 20:57:13,108 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 93 [2018-10-12 20:57:14,142 WARN L178 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 138 [2018-10-12 20:57:15,113 WARN L178 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 134 [2018-10-12 20:57:16,174 WARN L178 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 143 [2018-10-12 20:57:17,309 WARN L178 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 147 [2018-10-12 20:57:18,352 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 146 [2018-10-12 20:57:18,952 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2018-10-12 20:57:19,459 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2018-10-12 20:57:19,831 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-12 20:57:20,278 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-12 20:57:20,541 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2018-10-12 20:57:20,794 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-12 20:57:21,171 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 20:57:21,582 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2018-10-12 20:57:22,070 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2018-10-12 20:57:22,602 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2018-10-12 20:57:23,201 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 114 [2018-10-12 20:57:23,584 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-12 20:57:24,052 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2018-10-12 20:57:24,731 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 122 [2018-10-12 20:57:25,351 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-10-12 20:57:26,055 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 128 [2018-10-12 20:57:26,753 WARN L178 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 137 [2018-10-12 20:57:27,151 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2018-10-12 20:57:27,471 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-12 20:57:27,866 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-12 20:57:28,337 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2018-10-12 20:57:28,746 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2018-10-12 20:57:30,043 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 156 [2018-10-12 20:57:31,242 WARN L178 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 162 [2018-10-12 20:57:32,086 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 147 [2018-10-12 20:57:32,358 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-10-12 20:57:32,717 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-12 20:57:33,116 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-12 20:57:33,464 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2018-10-12 20:57:34,037 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2018-10-12 20:57:34,617 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2018-10-12 20:57:35,293 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2018-10-12 20:57:36,107 WARN L178 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 103 [2018-10-12 20:57:37,010 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 119 [2018-10-12 20:57:37,952 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 122 [2018-10-12 20:57:38,538 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2018-10-12 20:57:39,235 WARN L178 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 100 [2018-10-12 20:57:40,193 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 123 [2018-10-12 20:57:40,984 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 117 [2018-10-12 20:57:41,885 WARN L178 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 124 [2018-10-12 20:57:42,758 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 132 [2018-10-12 20:57:43,281 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2018-10-12 20:57:43,700 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2018-10-12 20:57:44,790 WARN L178 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 168 [2018-10-12 20:57:45,429 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2018-10-12 20:57:46,521 WARN L178 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 172 [2018-10-12 20:57:47,393 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-10-12 20:57:47,746 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2018-10-12 20:57:47,989 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-12 20:57:48,453 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 105 [2018-10-12 20:57:48,771 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-10-12 20:57:49,187 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2018-10-12 20:57:50,172 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-10-12 20:57:51,232 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 170 [2018-10-12 20:57:51,487 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2018-10-12 20:57:51,870 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2018-10-12 20:57:52,599 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2018-10-12 20:57:52,922 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2018-10-12 20:57:54,073 WARN L178 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 174 [2018-10-12 20:57:54,618 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-12 20:57:55,082 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2018-10-12 20:57:56,121 WARN L178 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 166 [2018-10-12 20:57:57,418 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 176 [2018-10-12 20:57:58,716 WARN L178 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 181 [2018-10-12 20:57:59,231 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 94 [2018-10-12 20:57:59,662 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2018-10-12 20:58:01,061 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 20:58:02,078 WARN L178 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 169 [2018-10-12 20:58:03,219 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 166 [2018-10-12 20:58:03,558 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-12 20:58:04,746 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 156 [2018-10-12 20:58:05,404 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-10-12 20:58:05,773 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2018-10-12 20:58:07,085 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 168 [2018-10-12 20:58:08,018 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-12 20:58:08,325 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2018-10-12 20:58:09,443 WARN L178 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 169 [2018-10-12 20:58:10,537 WARN L178 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 160 [2018-10-12 20:58:11,639 WARN L178 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 170 [2018-10-12 20:58:12,755 WARN L178 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 175 [2018-10-12 20:58:13,198 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2018-10-12 20:58:13,626 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2018-10-12 20:58:14,789 WARN L178 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 189 [2018-10-12 20:58:15,810 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 156 [2018-10-12 20:58:16,380 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-12 20:58:17,572 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 176 [2018-10-12 20:58:18,073 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2018-10-12 20:58:19,349 WARN L178 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 183 [2018-10-12 20:58:20,590 WARN L178 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 147 [2018-10-12 20:58:21,023 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-12 20:58:22,246 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 144 [2018-10-12 20:58:23,323 WARN L178 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 175 [2018-10-12 20:58:24,405 WARN L178 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 166 [2018-10-12 20:58:24,866 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2018-10-12 20:58:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:58:24,916 INFO L93 Difference]: Finished difference Result 673 states and 677 transitions. [2018-10-12 20:58:24,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-12 20:58:24,917 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 241 [2018-10-12 20:58:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:58:24,921 INFO L225 Difference]: With dead ends: 673 [2018-10-12 20:58:24,921 INFO L226 Difference]: Without dead ends: 673 [2018-10-12 20:58:24,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13489 ImplicationChecksByTransitivity, 83.2s TimeCoverageRelationStatistics Valid=5692, Invalid=46064, Unknown=0, NotChecked=0, Total=51756 [2018-10-12 20:58:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2018-10-12 20:58:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 481. [2018-10-12 20:58:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-12 20:58:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 486 transitions. [2018-10-12 20:58:24,931 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 486 transitions. Word has length 241 [2018-10-12 20:58:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:58:24,932 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 486 transitions. [2018-10-12 20:58:24,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-12 20:58:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 486 transitions. [2018-10-12 20:58:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-12 20:58:24,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:58:24,934 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:58:24,934 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:58:24,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:58:24,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1919323977, now seen corresponding path program 4 times [2018-10-12 20:58:24,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:58:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:58:25,608 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:58:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:58:29,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:58:29,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-12 20:58:29,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-12 20:58:29,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-12 20:58:29,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4116, Unknown=0, NotChecked=0, Total=4290 [2018-10-12 20:58:29,971 INFO L87 Difference]: Start difference. First operand 481 states and 486 transitions. Second operand 66 states. [2018-10-12 20:58:30,928 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 29 [2018-10-12 20:58:31,157 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 32 [2018-10-12 20:58:32,334 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 35 [2018-10-12 20:58:32,581 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 40 [2018-10-12 20:58:32,912 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 52 [2018-10-12 20:58:33,348 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 61 [2018-10-12 20:58:33,709 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 64 [2018-10-12 20:58:34,202 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2018-10-12 20:58:34,597 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 74 [2018-10-12 20:58:34,892 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 49 [2018-10-12 20:58:35,127 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 45 [2018-10-12 20:58:35,455 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 49 [2018-10-12 20:58:35,731 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 51 [2018-10-12 20:58:36,021 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-12 20:58:36,281 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-10-12 20:58:37,244 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-12 20:58:37,464 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:58:37,755 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-12 20:58:38,053 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-12 20:58:38,597 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-12 20:58:38,816 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2018-10-12 20:58:39,124 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-10-12 20:58:39,415 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89 [2018-10-12 20:58:39,608 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-12 20:58:40,184 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-10-12 20:58:40,643 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 41 [2018-10-12 20:58:41,077 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 39 [2018-10-12 20:58:41,351 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 43 [2018-10-12 20:58:41,574 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 45 [2018-10-12 20:58:41,862 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 48 [2018-10-12 20:58:42,139 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 53 [2018-10-12 20:58:42,439 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 58 [2018-10-12 20:58:43,363 WARN L178 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 73 [2018-10-12 20:58:43,761 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 82 [2018-10-12 20:58:44,176 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 57 [2018-10-12 20:58:44,577 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 80 [2018-10-12 20:58:44,974 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 89 [2018-10-12 20:58:45,529 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 94 [2018-10-12 20:58:45,893 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 81 [2018-10-12 20:58:46,784 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 101 [2018-10-12 20:58:47,867 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 98 [2018-10-12 20:58:48,494 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 108 [2018-10-12 20:58:48,999 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 103 [2018-10-12 20:58:49,439 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 118 [2018-10-12 20:58:49,935 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 133 [2018-10-12 20:58:50,427 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 128 [2018-10-12 20:58:50,829 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 113 [2018-10-12 20:58:51,273 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 115 [2018-10-12 20:58:53,090 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-10-12 20:58:54,094 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 100 [2018-10-12 20:58:54,758 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 95 [2018-10-12 20:58:55,220 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 85 [2018-10-12 20:58:55,583 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 90 [2018-10-12 20:58:55,951 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 95 [2018-10-12 20:58:56,305 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 88 [2018-10-12 20:58:56,649 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 83 [2018-10-12 20:58:57,020 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 90 [2018-10-12 20:58:58,713 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 64 [2018-10-12 20:58:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:58:58,751 INFO L93 Difference]: Finished difference Result 614 states and 619 transitions. [2018-10-12 20:58:58,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-12 20:58:58,751 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 262 [2018-10-12 20:58:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:58:58,754 INFO L225 Difference]: With dead ends: 614 [2018-10-12 20:58:58,754 INFO L226 Difference]: Without dead ends: 614 [2018-10-12 20:58:58,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6220 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=2371, Invalid=21499, Unknown=0, NotChecked=0, Total=23870 [2018-10-12 20:58:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2018-10-12 20:58:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 481. [2018-10-12 20:58:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-12 20:58:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 486 transitions. [2018-10-12 20:58:58,762 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 486 transitions. Word has length 262 [2018-10-12 20:58:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:58:58,763 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 486 transitions. [2018-10-12 20:58:58,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-12 20:58:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 486 transitions. [2018-10-12 20:58:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-12 20:58:58,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:58:58,765 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:58:58,765 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:58:58,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:58:58,765 INFO L82 PathProgramCache]: Analyzing trace with hash -531331429, now seen corresponding path program 5 times [2018-10-12 20:58:58,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:58:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:00,720 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-10-12 20:59:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 257 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:05,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:05,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-12 20:59:05,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-12 20:59:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-12 20:59:05,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=4934, Unknown=0, NotChecked=0, Total=5112 [2018-10-12 20:59:05,218 INFO L87 Difference]: Start difference. First operand 481 states and 486 transitions. Second operand 72 states. [2018-10-12 20:59:06,896 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 23 [2018-10-12 20:59:08,364 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 35 [2018-10-12 20:59:08,752 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 47 [2018-10-12 20:59:09,275 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 56 [2018-10-12 20:59:09,647 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 60 [2018-10-12 20:59:10,221 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 66 [2018-10-12 20:59:10,670 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2018-10-12 20:59:10,991 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 42 [2018-10-12 20:59:11,248 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 38 [2018-10-12 20:59:11,627 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 42 [2018-10-12 20:59:11,993 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 44 [2018-10-12 20:59:12,595 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-12 20:59:13,125 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-10-12 20:59:13,301 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-12 20:59:13,545 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-12 20:59:13,792 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 20:59:14,095 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:59:14,434 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2018-10-12 20:59:14,660 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-10-12 20:59:14,916 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 20:59:15,186 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2018-10-12 20:59:15,550 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-12 20:59:15,888 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2018-10-12 20:59:16,126 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-10-12 20:59:16,307 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-10-12 20:59:16,567 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-12 20:59:16,875 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-10-12 20:59:17,482 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 42 [2018-10-12 20:59:17,808 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 49 [2018-10-12 20:59:18,059 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 44 [2018-10-12 20:59:18,298 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 35 [2018-10-12 20:59:18,548 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 41 [2018-10-12 20:59:18,833 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 51 [2018-10-12 20:59:19,115 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 53 [2018-10-12 20:59:19,519 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2018-10-12 20:59:19,861 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 63 [2018-10-12 20:59:20,289 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 80 [2018-10-12 20:59:20,778 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 90 [2018-10-12 20:59:21,282 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 93 [2018-10-12 20:59:21,730 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 53 [2018-10-12 20:59:22,267 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 80 [2018-10-12 20:59:22,775 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 94 [2018-10-12 20:59:23,303 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 96 [2018-10-12 20:59:23,904 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 101 [2018-10-12 20:59:24,437 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 104 [2018-10-12 20:59:24,839 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 81 [2018-10-12 20:59:25,180 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 76 [2018-10-12 20:59:26,129 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 86 [2018-10-12 20:59:29,198 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 87 [2018-10-12 20:59:29,765 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 79 [2018-10-12 20:59:30,270 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 89 [2018-10-12 20:59:30,710 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 99 [2018-10-12 20:59:31,139 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 94 [2018-10-12 20:59:31,497 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 84 [2018-10-12 20:59:31,885 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 86 [2018-10-12 20:59:33,073 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 50 [2018-10-12 20:59:33,639 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 43 [2018-10-12 20:59:34,925 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 65 [2018-10-12 20:59:36,837 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 76 [2018-10-12 20:59:37,773 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 67 [2018-10-12 20:59:38,249 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 62 [2018-10-12 20:59:38,611 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 57 [2018-10-12 20:59:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:38,992 INFO L93 Difference]: Finished difference Result 711 states and 717 transitions. [2018-10-12 20:59:38,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-12 20:59:38,993 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 273 [2018-10-12 20:59:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:38,996 INFO L225 Difference]: With dead ends: 711 [2018-10-12 20:59:38,997 INFO L226 Difference]: Without dead ends: 711 [2018-10-12 20:59:38,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6949 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=3042, Invalid=26370, Unknown=0, NotChecked=0, Total=29412 [2018-10-12 20:59:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-10-12 20:59:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 545. [2018-10-12 20:59:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-10-12 20:59:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 550 transitions. [2018-10-12 20:59:39,006 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 550 transitions. Word has length 273 [2018-10-12 20:59:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:39,007 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 550 transitions. [2018-10-12 20:59:39,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-12 20:59:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 550 transitions. [2018-10-12 20:59:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-12 20:59:39,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:39,009 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:59:39,009 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:39,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash 273168695, now seen corresponding path program 5 times [2018-10-12 20:59:39,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:50,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:50,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-10-12 20:59:50,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-12 20:59:50,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-12 20:59:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=10601, Unknown=0, NotChecked=0, Total=11130 [2018-10-12 20:59:50,822 INFO L87 Difference]: Start difference. First operand 545 states and 550 transitions. Second operand 106 states. [2018-10-12 20:59:52,873 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-12 20:59:53,302 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-12 20:59:53,608 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2018-10-12 20:59:54,095 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2018-10-12 20:59:54,449 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-12 20:59:54,788 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2018-10-12 20:59:55,058 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-12 20:59:55,466 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2018-10-12 20:59:55,795 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2018-10-12 20:59:56,283 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2018-10-12 20:59:56,642 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2018-10-12 20:59:56,936 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2018-10-12 20:59:57,897 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-12 20:59:58,240 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-12 20:59:58,525 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2018-10-12 20:59:58,861 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 20:59:59,209 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2018-10-12 20:59:59,574 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 88 [2018-10-12 20:59:59,875 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-12 21:00:00,207 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2018-10-12 21:00:00,569 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2018-10-12 21:00:01,155 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2018-10-12 21:00:01,602 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2018-10-12 21:00:02,046 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2018-10-12 21:00:02,405 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2018-10-12 21:00:02,963 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 92 [2018-10-12 21:00:03,448 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 94 [2018-10-12 21:00:04,070 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 93 [2018-10-12 21:00:04,583 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 108 [2018-10-12 21:00:05,032 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 103 [2018-10-12 21:00:05,875 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-12 21:00:06,152 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-12 21:00:06,453 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-10-12 21:00:06,800 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2018-10-12 21:00:07,201 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2018-10-12 21:00:07,626 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2018-10-12 21:00:07,834 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-10-12 21:00:08,094 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-12 21:00:08,508 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-12 21:00:08,907 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2018-10-12 21:00:09,310 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 109 [2018-10-12 21:00:09,651 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2018-10-12 21:00:09,957 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2018-10-12 21:00:10,413 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2018-10-12 21:00:10,840 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2018-10-12 21:00:11,451 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-12 21:00:11,837 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 97 [2018-10-12 21:00:12,249 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 92 [2018-10-12 21:00:13,089 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-12 21:00:13,359 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2018-10-12 21:00:13,676 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2018-10-12 21:00:13,991 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-10-12 21:00:14,370 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2018-10-12 21:00:14,765 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-12 21:00:15,354 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2018-10-12 21:00:15,676 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2018-10-12 21:00:16,334 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 90 [2018-10-12 21:00:16,749 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-12 21:00:17,344 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2018-10-12 21:00:17,916 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2018-10-12 21:00:19,027 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2018-10-12 21:00:19,524 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2018-10-12 21:00:20,475 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2018-10-12 21:00:20,996 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2018-10-12 21:00:21,944 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-12 21:00:22,169 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2018-10-12 21:00:22,549 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2018-10-12 21:00:23,034 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-12 21:00:23,562 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2018-10-12 21:00:24,102 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-12 21:00:24,408 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-12 21:00:24,815 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-10-12 21:00:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:00:26,129 INFO L93 Difference]: Finished difference Result 748 states and 755 transitions. [2018-10-12 21:00:26,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-12 21:00:26,129 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 284 [2018-10-12 21:00:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:00:26,134 INFO L225 Difference]: With dead ends: 748 [2018-10-12 21:00:26,134 INFO L226 Difference]: Without dead ends: 748 [2018-10-12 21:00:26,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 5 SyntacticMatches, 8 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16396 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=4301, Invalid=45651, Unknown=0, NotChecked=0, Total=49952 [2018-10-12 21:00:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-12 21:00:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 599. [2018-10-12 21:00:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-10-12 21:00:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 605 transitions. [2018-10-12 21:00:26,145 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 605 transitions. Word has length 284 [2018-10-12 21:00:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:00:26,146 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 605 transitions. [2018-10-12 21:00:26,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-12 21:00:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 605 transitions. [2018-10-12 21:00:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-12 21:00:26,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:00:26,148 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:00:26,148 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:00:26,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:00:26,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1342218617, now seen corresponding path program 6 times [2018-10-12 21:00:26,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:00:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:00:26,849 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-12 21:00:29,002 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-12 21:00:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 43 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:00:38,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:00:38,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-10-12 21:00:38,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-12 21:00:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-12 21:00:38,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=7971, Unknown=0, NotChecked=0, Total=8190 [2018-10-12 21:00:38,175 INFO L87 Difference]: Start difference. First operand 599 states and 605 transitions. Second operand 91 states. [2018-10-12 21:00:40,261 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 35 [2018-10-12 21:00:40,700 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 41 [2018-10-12 21:00:41,088 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 41 [2018-10-12 21:00:41,440 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 34 [2018-10-12 21:00:41,807 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 21 [2018-10-12 21:00:42,173 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 24 [2018-10-12 21:00:42,546 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 27 [2018-10-12 21:00:42,881 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 29 [2018-10-12 21:00:43,358 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 37 [2018-10-12 21:00:43,819 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 45 [2018-10-12 21:00:44,376 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 53 [2018-10-12 21:00:45,052 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 70 [2018-10-12 21:00:45,639 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 72 [2018-10-12 21:00:46,524 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 84 [2018-10-12 21:00:47,275 WARN L178 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 99 [2018-10-12 21:00:48,083 WARN L178 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 100 [2018-10-12 21:00:49,045 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 109 [2018-10-12 21:00:49,955 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 111 [2018-10-12 21:00:50,548 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 63 [2018-10-12 21:00:51,025 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 62 [2018-10-12 21:00:51,692 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 66 [2018-10-12 21:00:52,254 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 68 [2018-10-12 21:00:52,806 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-12 21:00:53,180 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-12 21:00:53,498 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-12 21:00:53,793 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2018-10-12 21:00:54,463 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-10-12 21:00:54,714 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-12 21:00:54,984 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-12 21:00:55,294 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-12 21:00:55,675 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2018-10-12 21:00:56,131 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2018-10-12 21:00:56,661 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2018-10-12 21:00:57,001 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 21:00:57,404 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2018-10-12 21:00:57,920 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2018-10-12 21:00:58,510 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 124 [2018-10-12 21:00:59,194 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 133 [2018-10-12 21:00:59,935 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 139 [2018-10-12 21:01:00,342 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2018-10-12 21:01:00,682 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2018-10-12 21:01:01,141 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2018-10-12 21:01:01,689 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2018-10-12 21:01:02,167 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2018-10-12 21:01:02,970 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 54 [2018-10-12 21:01:03,529 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 64 [2018-10-12 21:01:03,964 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 57 [2018-10-12 21:01:04,401 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 43 [2018-10-12 21:01:04,909 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 46 [2018-10-12 21:01:05,370 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 50 [2018-10-12 21:01:05,797 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 52 [2018-10-12 21:01:06,414 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 61 [2018-10-12 21:01:07,016 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 64 [2018-10-12 21:01:07,639 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 67 [2018-10-12 21:01:08,372 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 83 [2018-10-12 21:01:09,125 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 93 [2018-10-12 21:01:09,976 WARN L178 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 96 [2018-10-12 21:01:10,714 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 60 [2018-10-12 21:01:11,400 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 84 [2018-10-12 21:01:12,080 WARN L178 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 88 [2018-10-12 21:01:13,049 WARN L178 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 98 [2018-10-12 21:01:13,814 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 104 [2018-10-12 21:01:14,400 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 69 [2018-10-12 21:01:15,005 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 63 [2018-10-12 21:01:15,753 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 72 [2018-10-12 21:01:16,900 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 77 [2018-10-12 21:01:17,667 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 98 [2018-10-12 21:01:17,878 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-12 21:01:18,197 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2018-10-12 21:01:20,262 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 117 [2018-10-12 21:01:21,156 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 112 [2018-10-12 21:01:21,947 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 134 [2018-10-12 21:01:22,811 WARN L178 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 156 [2018-10-12 21:01:23,691 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 151 [2018-10-12 21:01:24,408 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 129 [2018-10-12 21:01:25,242 WARN L178 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 133 [2018-10-12 21:01:26,460 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 139 [2018-10-12 21:01:27,305 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 142 [2018-10-12 21:01:28,260 WARN L178 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 146 [2018-10-12 21:01:29,097 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 143 [2018-10-12 21:01:29,529 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 17 [2018-10-12 21:01:30,089 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 141 [2018-10-12 21:01:30,736 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 140 [2018-10-12 21:01:31,099 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 7 [2018-10-12 21:01:31,707 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 12 [2018-10-12 21:01:32,164 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 14 [2018-10-12 21:01:32,604 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2018-10-12 21:01:33,272 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 153 [2018-10-12 21:01:33,912 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 137 [2018-10-12 21:01:34,635 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 115 [2018-10-12 21:01:35,153 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 133 [2018-10-12 21:01:35,820 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 151 [2018-10-12 21:01:36,286 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2018-10-12 21:01:36,600 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2018-10-12 21:01:37,015 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 120 [2018-10-12 21:01:37,557 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2018-10-12 21:01:38,612 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 125 [2018-10-12 21:01:39,830 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 121 [2018-10-12 21:01:40,720 WARN L178 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 114 [2018-10-12 21:01:41,480 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 96 [2018-10-12 21:01:42,171 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 103 [2018-10-12 21:01:42,908 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 110 [2018-10-12 21:01:43,520 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 92 [2018-10-12 21:01:44,066 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 85 [2018-10-12 21:01:44,674 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 91 [2018-10-12 21:01:45,576 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 94 [2018-10-12 21:01:45,998 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2018-10-12 21:01:46,618 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2018-10-12 21:01:47,008 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2018-10-12 21:01:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:01:47,077 INFO L93 Difference]: Finished difference Result 665 states and 669 transitions. [2018-10-12 21:01:47,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-12 21:01:47,077 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 294 [2018-10-12 21:01:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:01:47,080 INFO L225 Difference]: With dead ends: 665 [2018-10-12 21:01:47,080 INFO L226 Difference]: Without dead ends: 537 [2018-10-12 21:01:47,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9370 ImplicationChecksByTransitivity, 66.4s TimeCoverageRelationStatistics Valid=4389, Invalid=38253, Unknown=0, NotChecked=0, Total=42642 [2018-10-12 21:01:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2018-10-12 21:01:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 524. [2018-10-12 21:01:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-12 21:01:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 529 transitions. [2018-10-12 21:01:47,088 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 529 transitions. Word has length 294 [2018-10-12 21:01:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:01:47,088 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 529 transitions. [2018-10-12 21:01:47,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-12 21:01:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 529 transitions. [2018-10-12 21:01:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-12 21:01:47,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:01:47,091 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:01:47,091 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:01:47,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:01:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash -131038549, now seen corresponding path program 7 times [2018-10-12 21:01:47,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:01:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:01:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:01:58,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:01:58,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-10-12 21:01:58,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-12 21:01:58,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-12 21:01:58,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=8219, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 21:01:58,831 INFO L87 Difference]: Start difference. First operand 524 states and 529 transitions. Second operand 93 states. [2018-10-12 21:02:00,885 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2018-10-12 21:02:02,542 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2018-10-12 21:02:02,898 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 52 [2018-10-12 21:02:03,442 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 67 [2018-10-12 21:02:04,241 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 79 [2018-10-12 21:02:04,783 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2018-10-12 21:02:05,581 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 91 [2018-10-12 21:02:06,295 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 95 [2018-10-12 21:02:06,697 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 54 [2018-10-12 21:02:06,995 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 53 [2018-10-12 21:02:07,473 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 57 [2018-10-12 21:02:07,860 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 59 [2018-10-12 21:02:08,585 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-12 21:02:08,803 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-12 21:02:09,312 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-12 21:02:09,635 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2018-10-12 21:02:09,891 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:02:10,306 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-10-12 21:02:10,681 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-12 21:02:11,163 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-12 21:02:11,842 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2018-10-12 21:02:12,485 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 112 [2018-10-12 21:02:13,147 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2018-10-12 21:02:13,618 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 21:02:13,982 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2018-10-12 21:02:14,381 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2018-10-12 21:02:15,091 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2018-10-12 21:02:15,546 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 96 [2018-10-12 21:02:15,884 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:02:16,131 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-12 21:02:16,547 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-12 21:02:16,946 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-12 21:02:17,277 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-12 21:02:17,836 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-12 21:02:18,158 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2018-10-12 21:02:18,433 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2018-10-12 21:02:18,677 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2018-10-12 21:02:19,495 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2018-10-12 21:02:19,790 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2018-10-12 21:02:20,287 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2018-10-12 21:02:20,808 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2018-10-12 21:02:21,516 WARN L178 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 91 [2018-10-12 21:02:22,334 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 110 [2018-10-12 21:02:23,271 WARN L178 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 132 [2018-10-12 21:02:23,961 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2018-10-12 21:02:24,605 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 112 [2018-10-12 21:02:25,368 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 130 [2018-10-12 21:02:26,289 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 128 [2018-10-12 21:02:27,231 WARN L178 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 146 [2018-10-12 21:02:28,199 WARN L178 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 159 [2018-10-12 21:02:28,783 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 98 [2018-10-12 21:02:29,219 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2018-10-12 21:02:29,854 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2018-10-12 21:02:30,379 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 95 [2018-10-12 21:02:30,853 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-12 21:02:31,275 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-12 21:02:31,678 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2018-10-12 21:02:32,373 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-12 21:02:32,610 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 21:02:32,927 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-12 21:02:33,256 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-12 21:02:33,607 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2018-10-12 21:02:34,131 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-10-12 21:02:34,462 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2018-10-12 21:02:34,945 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-10-12 21:02:35,323 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2018-10-12 21:02:37,473 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 135 [2018-10-12 21:02:37,767 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2018-10-12 21:02:39,027 WARN L178 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2018-10-12 21:02:40,134 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 160 [2018-10-12 21:02:41,012 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 154 [2018-10-12 21:02:41,805 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 178 [2018-10-12 21:02:42,702 WARN L178 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 198 [2018-10-12 21:02:43,295 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 158 [2018-10-12 21:02:43,770 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2018-10-12 21:02:44,377 WARN L178 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 147 [2018-10-12 21:02:45,538 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-10-12 21:02:46,247 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2018-10-12 21:02:46,866 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 146 [2018-10-12 21:02:47,575 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2018-10-12 21:02:47,968 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2018-10-12 21:02:48,822 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-10-12 21:02:49,443 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2018-10-12 21:02:49,808 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-12 21:02:50,216 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2018-10-12 21:02:51,655 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 88 [2018-10-12 21:02:52,511 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 83 [2018-10-12 21:02:53,079 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2018-10-12 21:02:53,447 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2018-10-12 21:02:53,841 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 83 [2018-10-12 21:02:54,192 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2018-10-12 21:02:54,462 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2018-10-12 21:02:54,791 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2018-10-12 21:02:57,138 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-10-12 21:02:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:02:57,180 INFO L93 Difference]: Finished difference Result 655 states and 661 transitions. [2018-10-12 21:02:57,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-12 21:02:57,181 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 305 [2018-10-12 21:02:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:02:57,184 INFO L225 Difference]: With dead ends: 655 [2018-10-12 21:02:57,184 INFO L226 Difference]: Without dead ends: 655 [2018-10-12 21:02:57,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 2 SyntacticMatches, 11 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13268 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=3086, Invalid=45094, Unknown=0, NotChecked=0, Total=48180 [2018-10-12 21:02:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-10-12 21:02:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 524. [2018-10-12 21:02:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-12 21:02:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 529 transitions. [2018-10-12 21:02:57,193 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 529 transitions. Word has length 305 [2018-10-12 21:02:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:02:57,194 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 529 transitions. [2018-10-12 21:02:57,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-12 21:02:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 529 transitions. [2018-10-12 21:02:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-12 21:02:57,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:02:57,197 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:57,197 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:02:57,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:02:57,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1902913287, now seen corresponding path program 8 times [2018-10-12 21:02:57,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:02:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:03:00,759 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-10-12 21:03:01,030 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-10-12 21:03:01,314 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2018-10-12 21:03:01,528 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2018-10-12 21:03:01,716 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2018-10-12 21:03:06,547 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-12 21:03:06,891 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-10-12 21:03:07,241 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-10-12 21:03:07,589 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-12 21:03:07,880 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-12 21:03:08,178 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-12 21:03:08,481 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-10-12 21:03:08,928 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2018-10-12 21:03:09,287 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-10-12 21:03:09,640 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-12 21:03:10,047 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-12 21:03:10,323 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-12 21:03:10,714 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-10-12 21:03:11,112 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-12 21:03:11,511 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-10-12 21:03:12,192 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-12 21:03:12,699 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-12 21:03:13,089 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-10-12 21:03:13,462 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-12 21:03:13,914 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-12 21:03:14,592 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-12 21:03:15,241 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-12 21:03:15,788 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2018-10-12 21:03:16,432 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-12 21:03:16,995 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-12 21:03:17,782 WARN L178 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-12 21:03:18,457 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-12 21:03:18,749 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-10-12 21:03:19,086 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41