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/optional_data_creation_test04_true-valid-memsafety.i_35.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:43:36,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:43:36,940 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:43:36,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-10 15:43:36,988 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:43:36,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:43:36,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:43:37,000 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:43:37,000 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:43:37,000 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:43:37,000 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:43:37,004 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:43:37,005 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:43:37,005 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:43:37,005 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:43:37,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:43:37,005 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:43:37,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:43:37,007 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:43:37,007 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:43:37,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:43:37,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:43:37,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:43:37,082 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:43:37,082 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:43:37,085 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-10 15:43:37,086 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl' [2018-10-10 15:43:37,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:43:37,182 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:43:37,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:43:37,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:43:37,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:43:37,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/1) ... [2018-10-10 15:43:37,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:43:37,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:43:37,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:43:37,249 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:43:37,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (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 [2018-10-10 15:43:37,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:43:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:43:37,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:43:38,198 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:43:38,199 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:38 BoogieIcfgContainer [2018-10-10 15:43:38,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:43:38,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:43:38,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:43:38,204 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:43:38,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:37" (1/2) ... [2018-10-10 15:43:38,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bedb74f and model type optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:43:38, skipping insertion in model container [2018-10-10 15:43:38,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:38" (2/2) ... [2018-10-10 15:43:38,208 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-10 15:43:38,218 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:43:38,226 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:43:38,244 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:43:38,273 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:43:38,274 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:43:38,274 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:43:38,274 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:43:38,274 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:43:38,275 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:43:38,275 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:43:38,275 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:43:38,275 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:43:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-10 15:43:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-10 15:43:38,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:38,311 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:38,313 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:38,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-10 15:43:38,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:40,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:43:40,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-10 15:43:40,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-10 15:43:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-10 15:43:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-10 15:43:40,104 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-10 15:43:41,729 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-10 15:43:42,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:42,388 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-10 15:43:42,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-10 15:43:42,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-10 15:43:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:42,406 INFO L225 Difference]: With dead ends: 154 [2018-10-10 15:43:42,407 INFO L226 Difference]: Without dead ends: 154 [2018-10-10 15:43:42,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:43:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-10 15:43:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-10 15:43:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-10 15:43:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-10 15:43:42,461 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-10 15:43:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:42,463 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-10 15:43:42,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-10 15:43:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-10 15:43:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-10 15:43:42,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:42,468 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:42,468 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:42,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-10 15:43:42,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:43,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:43,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-10 15:43:43,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-10 15:43:43,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-10 15:43:43,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:43:43,904 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-10 15:43:44,658 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-10 15:43:45,132 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-10 15:43:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:46,158 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-10 15:43:46,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-10 15:43:46,159 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-10 15:43:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:46,162 INFO L225 Difference]: With dead ends: 177 [2018-10-10 15:43:46,162 INFO L226 Difference]: Without dead ends: 177 [2018-10-10 15:43:46,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-10 15:43:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-10 15:43:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-10 15:43:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-10 15:43:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-10 15:43:46,178 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-10 15:43:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:46,179 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-10 15:43:46,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-10 15:43:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-10 15:43:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-10 15:43:46,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:46,182 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:46,183 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:46,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-10 15:43:46,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:47,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:47,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 15:43:47,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 15:43:47,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 15:43:47,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:43:47,145 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-10 15:43:49,158 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-10 15:43:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:49,373 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-10 15:43:49,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-10 15:43:49,374 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-10 15:43:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:49,377 INFO L225 Difference]: With dead ends: 200 [2018-10-10 15:43:49,377 INFO L226 Difference]: Without dead ends: 200 [2018-10-10 15:43:49,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:43:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-10 15:43:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-10 15:43:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-10 15:43:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-10 15:43:49,392 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-10 15:43:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:49,393 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-10 15:43:49,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 15:43:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-10 15:43:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-10 15:43:49,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:49,397 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:49,397 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:49,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-10 15:43:49,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:50,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:50,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-10 15:43:50,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-10 15:43:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-10 15:43:50,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-10 15:43:50,908 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-10 15:43:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:53,479 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-10 15:43:53,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 15:43:53,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-10 15:43:53,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:53,483 INFO L225 Difference]: With dead ends: 223 [2018-10-10 15:43:53,484 INFO L226 Difference]: Without dead ends: 223 [2018-10-10 15:43:53,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:43:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-10 15:43:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-10 15:43:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-10 15:43:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-10 15:43:53,500 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-10 15:43:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:53,501 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-10 15:43:53,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-10 15:43:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-10 15:43:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-10 15:43:53,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:53,505 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:53,505 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:53,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-10 15:43:53,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:55,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:55,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:43:55,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:43:55,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:43:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:43:55,677 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-10 15:43:56,549 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-10 15:43:58,401 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-10 15:43:59,857 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:44:00,044 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:44:00,336 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:44:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:00,600 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-10 15:44:00,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:44:00,602 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-10 15:44:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:00,604 INFO L225 Difference]: With dead ends: 246 [2018-10-10 15:44:00,604 INFO L226 Difference]: Without dead ends: 246 [2018-10-10 15:44:00,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-10 15:44:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-10 15:44:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-10 15:44:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-10 15:44:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-10 15:44:00,616 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-10 15:44:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:00,617 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-10 15:44:00,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:44:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-10 15:44:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-10 15:44:00,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:00,621 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:00,622 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:00,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:00,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-10 15:44:00,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:02,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:02,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:44:02,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:44:02,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:44:02,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:44:02,244 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-10 15:44:03,380 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:44:03,570 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:44:03,787 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:44:03,941 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:44:04,225 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:44:04,379 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:44:04,948 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:44:05,280 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:44:05,516 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-10 15:44:05,691 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-10 15:44:05,959 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-10 15:44:06,171 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-10 15:44:06,488 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-10 15:44:06,763 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-10 15:44:07,751 WARN L178 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-10 15:44:07,981 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-10 15:44:08,169 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-10 15:44:08,492 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-10 15:44:08,730 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:44:08,973 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-10 15:44:09,179 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-10 15:44:09,405 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-10 15:44:09,600 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-10 15:44:09,754 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:44:09,917 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:44:10,095 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-10 15:44:10,300 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:44:10,987 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:44:11,171 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:44:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:11,337 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-10 15:44:11,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-10 15:44:11,338 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-10 15:44:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:11,340 INFO L225 Difference]: With dead ends: 269 [2018-10-10 15:44:11,340 INFO L226 Difference]: Without dead ends: 269 [2018-10-10 15:44:11,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-10 15:44:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-10 15:44:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-10 15:44:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-10 15:44:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-10 15:44:11,350 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-10 15:44:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:11,351 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-10 15:44:11,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:44:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-10 15:44:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-10 15:44:11,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:11,356 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:11,356 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:11,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:11,357 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-10 15:44:11,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:12,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:12,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:44:12,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:44:12,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:44:12,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:44:12,781 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-10 15:44:16,297 WARN L178 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-10 15:44:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:17,377 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-10 15:44:17,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-10 15:44:17,379 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-10 15:44:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:17,380 INFO L225 Difference]: With dead ends: 292 [2018-10-10 15:44:17,381 INFO L226 Difference]: Without dead ends: 292 [2018-10-10 15:44:17,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-10 15:44:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-10 15:44:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-10 15:44:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-10 15:44:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-10 15:44:17,388 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-10 15:44:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:17,389 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-10 15:44:17,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:44:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-10 15:44:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-10 15:44:17,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:17,391 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:17,391 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:17,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:17,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-10 15:44:17,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:18,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:18,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:44:18,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:44:18,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:44:18,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:44:18,840 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-10 15:44:21,393 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-10 15:44:23,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:23,904 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-10 15:44:23,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:44:23,905 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-10 15:44:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:23,907 INFO L225 Difference]: With dead ends: 315 [2018-10-10 15:44:23,907 INFO L226 Difference]: Without dead ends: 315 [2018-10-10 15:44:23,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:44:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-10 15:44:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-10 15:44:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-10 15:44:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-10 15:44:23,914 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-10 15:44:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:23,915 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-10 15:44:23,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:44:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-10 15:44:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-10 15:44:23,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:23,917 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:23,917 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:23,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-10 15:44:23,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:26,033 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-10-10 15:44:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:26,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:26,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:26,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:27,000 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-10 15:44:29,433 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-10 15:44:30,676 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:44:31,492 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-10 15:44:31,663 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:44:35,111 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:44:35,331 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:44:35,601 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:44:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:35,935 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-10 15:44:35,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-10 15:44:35,936 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-10 15:44:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:35,938 INFO L225 Difference]: With dead ends: 338 [2018-10-10 15:44:35,938 INFO L226 Difference]: Without dead ends: 338 [2018-10-10 15:44:35,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1182, Invalid=7008, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:44:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-10 15:44:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-10 15:44:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-10 15:44:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-10 15:44:35,946 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-10 15:44:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:35,947 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-10 15:44:35,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:44:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-10 15:44:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-10 15:44:35,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:35,949 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:35,949 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:35,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:35,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-10 15:44:35,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:38,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:38,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:38,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:38,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:38,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:38,218 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-10 15:44:39,617 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:44:39,827 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:44:40,095 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:44:40,262 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:44:40,441 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:44:40,605 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:44:41,125 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:44:41,552 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:44:41,753 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:44:41,917 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:44:42,410 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:44:42,649 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:44:42,929 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:44:43,142 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:44:43,357 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-10 15:44:43,522 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:44:44,026 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:44:44,264 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-10 15:44:44,549 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-10 15:44:44,777 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-10 15:44:44,936 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:44:45,446 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-10 15:44:45,609 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-10 15:44:46,123 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:44:46,387 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:44:46,955 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-10 15:44:47,148 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-10 15:44:47,379 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-10 15:44:47,651 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-10 15:44:47,873 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-10 15:44:48,046 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:44:48,380 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:44:48,665 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:44:48,888 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:44:49,161 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:44:49,318 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:44:49,598 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:44:49,785 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:44:49,979 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:44:50,206 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:44:50,713 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:44:50,906 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:44:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:51,080 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-10 15:44:51,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-10 15:44:51,081 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-10 15:44:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:51,083 INFO L225 Difference]: With dead ends: 361 [2018-10-10 15:44:51,083 INFO L226 Difference]: Without dead ends: 361 [2018-10-10 15:44:51,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-10 15:44:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-10 15:44:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-10 15:44:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-10 15:44:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-10 15:44:51,093 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-10 15:44:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:51,093 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-10 15:44:51,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:44:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-10 15:44:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-10 15:44:51,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:51,096 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:44:51,096 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:51,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-10 15:44:51,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:54,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:54,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:44:54,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:44:54,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:44:54,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:44:54,681 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-10 15:44:59,235 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:45:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:03,324 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-10 15:45:03,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-10 15:45:03,324 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-10 15:45:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:03,327 INFO L225 Difference]: With dead ends: 384 [2018-10-10 15:45:03,327 INFO L226 Difference]: Without dead ends: 384 [2018-10-10 15:45:03,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2018-10-10 15:45:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-10 15:45:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-10 15:45:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-10 15:45:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-10 15:45:03,336 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-10 15:45:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:03,336 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-10 15:45:03,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:45:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-10 15:45:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-10 15:45:03,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:03,339 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:03,339 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:03,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:03,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-10 15:45:03,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:05,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:05,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-10 15:45:05,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-10 15:45:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-10 15:45:05,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 15:45:05,810 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-10 15:45:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:14,768 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-10 15:45:14,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-10 15:45:14,769 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-10 15:45:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:14,771 INFO L225 Difference]: With dead ends: 407 [2018-10-10 15:45:14,771 INFO L226 Difference]: Without dead ends: 407 [2018-10-10 15:45:14,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1092, Invalid=6564, Unknown=0, NotChecked=0, Total=7656 [2018-10-10 15:45:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-10 15:45:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-10 15:45:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-10 15:45:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-10 15:45:14,778 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-10 15:45:14,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:14,779 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-10 15:45:14,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-10 15:45:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-10 15:45:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-10 15:45:14,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:14,782 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:14,782 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:14,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-10 15:45:14,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:17,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:17,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:45:17,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:45:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:45:17,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:45:17,903 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-10 15:45:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:26,833 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-10 15:45:26,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-10 15:45:26,833 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-10 15:45:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:26,835 INFO L225 Difference]: With dead ends: 430 [2018-10-10 15:45:26,835 INFO L226 Difference]: Without dead ends: 430 [2018-10-10 15:45:26,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:45:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-10 15:45:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-10 15:45:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-10 15:45:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-10 15:45:26,843 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-10 15:45:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:26,844 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-10 15:45:26,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:45:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-10 15:45:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-10 15:45:26,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:26,847 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:26,847 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:26,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-10 15:45:26,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:29,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:29,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 15:45:29,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 15:45:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 15:45:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:45:29,772 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-10 15:45:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:40,506 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-10 15:45:40,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-10 15:45:40,507 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-10 15:45:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:40,510 INFO L225 Difference]: With dead ends: 453 [2018-10-10 15:45:40,510 INFO L226 Difference]: Without dead ends: 453 [2018-10-10 15:45:40,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-10 15:45:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-10 15:45:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-10 15:45:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-10 15:45:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-10 15:45:40,518 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-10 15:45:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:40,518 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-10 15:45:40,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 15:45:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-10 15:45:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-10 15:45:40,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:40,521 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:45:40,521 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:40,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-10 15:45:40,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:44,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:44,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-10 15:45:44,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-10 15:45:44,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-10 15:45:44,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-10 15:45:44,985 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-10 15:45:46,864 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:45:47,208 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:45:47,406 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:45:47,633 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:45:47,850 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-10 15:45:48,498 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-10 15:45:48,990 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-10 15:45:53,032 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-10 15:45:58,066 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-10 15:45:58,901 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-10 15:45:59,174 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-10 15:45:59,524 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-10 15:45:59,753 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-10 15:46:00,232 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:46:00,584 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:46:00,815 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:46:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:01,065 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-10 15:46:01,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-10 15:46:01,066 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-10 15:46:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:01,067 INFO L225 Difference]: With dead ends: 476 [2018-10-10 15:46:01,067 INFO L226 Difference]: Without dead ends: 476 [2018-10-10 15:46:01,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-10 15:46:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-10 15:46:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-10 15:46:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-10 15:46:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-10 15:46:01,075 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-10 15:46:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:01,076 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-10 15:46:01,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-10 15:46:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-10 15:46:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-10 15:46:01,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:01,079 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:01,079 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:01,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-10 15:46:01,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:03,147 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-10 15:46:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:07,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:07,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-10 15:46:07,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-10 15:46:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-10 15:46:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-10 15:46:07,183 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-10 15:46:10,613 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-10 15:46:10,840 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-10 15:46:11,125 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-10 15:46:11,497 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-10 15:46:11,742 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-10 15:46:11,996 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-10 15:46:12,186 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:46:12,837 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-10 15:46:13,128 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-10 15:46:13,564 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:46:13,827 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-10 15:46:14,084 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-10 15:46:14,279 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-10 15:46:14,944 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-10 15:46:15,361 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-10 15:46:15,735 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-10 15:46:16,000 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:46:16,258 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-10 15:46:16,448 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-10 15:46:17,088 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-10 15:46:17,604 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-10 15:46:17,800 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-10 15:46:18,575 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:18,769 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:19,442 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:19,631 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:19,820 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-10 15:46:20,349 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:20,543 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-10 15:46:21,241 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-10 15:46:21,431 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:46:22,092 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-10 15:46:22,288 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-10 15:46:22,950 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-10 15:46:23,141 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-10 15:46:23,889 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-10 15:46:24,089 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:46:24,789 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-10 15:46:25,014 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-10 15:46:25,299 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-10 15:46:25,674 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-10 15:46:25,937 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-10 15:46:26,145 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:46:26,548 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-10 15:46:26,910 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-10 15:46:27,164 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-10 15:46:27,486 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-10 15:46:27,660 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:46:27,972 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:46:28,172 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:46:28,390 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-10 15:46:28,660 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-10 15:46:29,246 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-10 15:46:29,756 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:46:29,953 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-10 15:46:30,173 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:46:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:30,372 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-10 15:46:30,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-10 15:46:30,372 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-10 15:46:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:30,374 INFO L225 Difference]: With dead ends: 499 [2018-10-10 15:46:30,374 INFO L226 Difference]: Without dead ends: 499 [2018-10-10 15:46:30,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-10 15:46:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-10 15:46:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-10 15:46:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-10 15:46:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-10 15:46:30,382 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-10 15:46:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:30,382 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-10 15:46:30,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-10 15:46:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-10 15:46:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-10 15:46:30,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:30,386 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:30,386 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:30,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-10 15:46:30,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:35,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:35,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:46:35,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:46:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:46:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:46:35,983 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-10 15:46:43,573 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:46:44,212 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-10 15:46:44,935 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:46:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:51,734 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-10 15:46:51,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-10 15:46:51,735 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-10 15:46:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:51,737 INFO L225 Difference]: With dead ends: 522 [2018-10-10 15:46:51,737 INFO L226 Difference]: Without dead ends: 522 [2018-10-10 15:46:51,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-10 15:46:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-10 15:46:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-10 15:46:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-10 15:46:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-10 15:46:51,745 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-10 15:46:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:51,746 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-10 15:46:51,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:46:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-10 15:46:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-10 15:46:51,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:51,749 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:46:51,749 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:51,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-10 15:46:51,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:46:56,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:56,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:46:56,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:46:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:46:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:46:56,023 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-10 15:46:57,765 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-10 15:46:58,023 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:46:58,376 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-10 15:46:58,570 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:46:58,776 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-10 15:46:58,971 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:46:59,383 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-10 15:46:59,683 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:47:00,176 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:47:00,410 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:47:00,618 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:47:01,261 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:47:01,533 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:47:01,899 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:47:02,146 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:47:02,402 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:47:02,596 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:47:03,250 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-10 15:47:03,537 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:47:03,904 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:47:04,161 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:47:04,451 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-10 15:47:04,702 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-10 15:47:05,383 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-10 15:47:05,668 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:47:06,044 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:06,317 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-10 15:47:06,597 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-10 15:47:06,804 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:07,205 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-10 15:47:07,481 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:47:07,774 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:47:08,172 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-10 15:47:08,466 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-10 15:47:08,700 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:09,424 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-10 15:47:09,666 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-10 15:47:10,431 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-10 15:47:10,653 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:11,378 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:11,602 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:12,320 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:12,539 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:13,266 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-10 15:47:13,477 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:14,196 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:14,411 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:14,878 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-10 15:47:15,242 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:47:15,482 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-10 15:47:15,787 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-10 15:47:16,174 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-10 15:47:16,454 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-10 15:47:16,677 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-10 15:47:17,114 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-10 15:47:17,493 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-10 15:47:17,755 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-10 15:47:18,100 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-10 15:47:18,299 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-10 15:47:18,645 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:47:18,861 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-10 15:47:19,093 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-10 15:47:19,364 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-10 15:47:19,554 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:47:19,937 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:47:20,193 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:47:20,418 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-10 15:47:20,681 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-10 15:47:20,864 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:47:21,187 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:47:21,395 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:47:21,617 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:47:21,869 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-10 15:47:22,268 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:47:22,472 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:47:22,683 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:47:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:47:22,889 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-10 15:47:22,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-10 15:47:22,889 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-10 15:47:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:47:22,892 INFO L225 Difference]: With dead ends: 545 [2018-10-10 15:47:22,893 INFO L226 Difference]: Without dead ends: 545 [2018-10-10 15:47:22,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=3448, Invalid=22634, Unknown=0, NotChecked=0, Total=26082 [2018-10-10 15:47:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-10 15:47:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-10 15:47:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-10 15:47:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-10 15:47:22,900 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-10 15:47:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:47:22,901 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-10 15:47:22,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:47:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-10 15:47:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-10 15:47:22,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:47:22,905 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:47:22,905 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:47:22,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:47:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-10 15:47:22,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:47:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:47:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:47:28,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:47:28,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:47:28,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:47:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:47:28,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:47:28,676 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-10 15:47:33,078 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-10 15:47:33,309 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-10 15:47:34,082 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-10 15:47:34,304 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:47:34,583 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-10 15:47:34,966 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-10 15:47:35,256 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-10 15:47:35,563 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:47:35,758 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-10 15:47:36,434 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-10 15:47:36,732 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:47:37,132 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-10 15:47:37,403 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:47:37,691 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-10 15:47:37,894 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-10 15:47:38,589 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-10 15:47:38,892 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-10 15:47:39,295 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:47:39,579 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-10 15:47:39,863 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-10 15:47:40,070 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-10 15:47:40,557 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-10 15:47:40,852 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-10 15:47:41,171 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-10 15:47:41,579 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-10 15:47:41,891 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-10 15:47:42,172 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-10 15:47:42,374 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-10 15:47:42,772 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-10 15:47:43,029 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-10 15:47:43,578 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-10 15:47:43,856 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-10 15:47:44,060 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-10 15:47:44,471 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-10 15:47:44,740 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-10 15:47:45,295 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-10 15:47:45,577 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:46,408 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:46,634 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:47,385 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:47,608 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:48,347 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-10 15:47:48,565 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-10 15:47:49,315 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-10 15:47:49,532 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-10 15:47:50,300 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-10 15:47:50,578 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-10 15:47:51,004 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-10 15:47:51,366 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-10 15:47:51,605 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-10 15:47:51,906 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-10 15:47:52,352 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-10 15:47:52,637 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-10 15:47:52,874 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-10 15:47:53,311 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-10 15:47:53,705 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-10 15:47:53,990 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:47:54,340 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-10 15:47:54,560 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-10 15:47:54,740 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-10 15:47:54,946 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-10 15:47:55,193 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-10 15:47:55,449 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-10 15:47:55,786 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-10 15:47:56,030 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-10 15:47:56,414 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:47:56,656 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-10 15:47:56,912 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-10 15:47:57,173 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:47:57,358 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:47:57,706 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:47:57,911 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-10 15:47:58,134 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-10 15:47:58,376 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-10 15:47:59,006 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:47:59,222 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:47:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:47:59,426 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-10 15:47:59,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-10 15:47:59,427 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-10 15:47:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:47:59,429 INFO L225 Difference]: With dead ends: 568 [2018-10-10 15:47:59,429 INFO L226 Difference]: Without dead ends: 568 [2018-10-10 15:47:59,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=3776, Invalid=26674, Unknown=0, NotChecked=0, Total=30450 [2018-10-10 15:47:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-10 15:47:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-10 15:47:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-10 15:47:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-10 15:47:59,437 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-10 15:47:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:47:59,437 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-10 15:47:59,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:47:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-10 15:47:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-10 15:47:59,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:47:59,442 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:47:59,442 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:47:59,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:47:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-10 15:47:59,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:47:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:48:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:48:05,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:48:05,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-10 15:48:05,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-10 15:48:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-10 15:48:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-10 15:48:05,560 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-10 15:48:07,884 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-10 15:48:14,684 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-10 15:48:14,939 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:15,302 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:15,521 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:48:16,404 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:16,630 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:17,107 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:48:17,893 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:48:18,118 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:48:18,598 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:48:19,532 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-10 15:48:19,807 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:48:20,178 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-10 15:48:20,454 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-10 15:48:20,767 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-10 15:48:20,990 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-10 15:48:21,453 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-10 15:48:21,797 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-10 15:48:22,368 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-10 15:48:22,614 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-10 15:48:23,038 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-10 15:48:23,414 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-10 15:48:23,688 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-10 15:48:24,213 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-10 15:48:24,470 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-10 15:48:24,903 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-10 15:48:25,275 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-10 15:48:25,548 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-10 15:48:26,070 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-10 15:48:26,327 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-10 15:48:26,561 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-10-10 15:48:26,797 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-10 15:48:27,028 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-10 15:48:27,277 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-10 15:48:27,564 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-10 15:48:27,775 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-10 15:48:28,135 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:48:28,359 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:48:28,602 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-10 15:48:28,873 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-10 15:48:29,071 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-10 15:48:29,414 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-10 15:48:29,639 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-10 15:48:29,895 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-10 15:48:30,164 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-10 15:48:30,351 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-10 15:48:30,690 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:48:30,907 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:48:31,145 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:48:31,417 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-10 15:48:32,161 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-10 15:48:32,394 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-10 15:48:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:32,627 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-10 15:48:32,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-10 15:48:32,628 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-10 15:48:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:32,630 INFO L225 Difference]: With dead ends: 591 [2018-10-10 15:48:32,630 INFO L226 Difference]: Without dead ends: 591 [2018-10-10 15:48:32,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-10 15:48:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-10 15:48:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-10 15:48:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-10 15:48:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-10 15:48:32,638 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-10 15:48:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:32,639 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-10 15:48:32,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-10 15:48:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-10 15:48:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-10 15:48:32,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:48:32,643 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:48:32,643 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:48:32,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:48:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-10 15:48:32,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:48:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:48:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:48:33,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:48:33,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-10 15:48:33,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-10 15:48:33,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-10 15:48:33,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:48:33,793 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-10 15:48:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:48:34,780 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-10 15:48:34,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-10 15:48:34,780 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-10 15:48:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:48:34,781 INFO L225 Difference]: With dead ends: 555 [2018-10-10 15:48:34,781 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:48:34,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:48:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:48:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:48:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:48:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:48:34,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-10 15:48:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:48:34,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:48:34,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-10 15:48:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:48:34,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:48:34,788 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:48:34 BoogieIcfgContainer [2018-10-10 15:48:34,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:48:34,789 INFO L168 Benchmark]: Toolchain (without parser) took 297608.18 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -126.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 390.3 MB). Peak memory consumption was 264.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:34,790 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:48:34,790 INFO L168 Benchmark]: Boogie Preprocessor took 64.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:48:34,790 INFO L168 Benchmark]: RCFGBuilder took 950.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:34,791 INFO L168 Benchmark]: TraceAbstraction took 296588.34 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -126.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 348.1 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:48:34,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 950.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 296588.34 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -126.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 348.1 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 1 error locations. SAFE Result, 296.5s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 232.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 180.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 420 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 51.1s InterpolantComputationTime, 7119 NumberOfCodeBlocks, 7119 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7098 ConstructedInterpolants, 0 QuantifiedInterpolants, 59335894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 4231/33530 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_true-valid-memsafety.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-48-34-799.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_true-valid-memsafety.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-48-34-799.csv Received shutdown request...