java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/random/RanFile055.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:02:46,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:02:46,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:02:46,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:02:46,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:02:46,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:02:46,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:02:46,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:02:46,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:02:46,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:02:46,287 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:02:46,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:02:46,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:02:46,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:02:46,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:02:46,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:02:46,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:02:46,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:02:46,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:02:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:02:46,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:02:46,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:02:46,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:02:46,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:02:46,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:02:46,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:02:46,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:02:46,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:02:46,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:02:46,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:02:46,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:02:46,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:02:46,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:02:46,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:02:46,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:02:46,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:02:46,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:02:46,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:02:46,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:02:46,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:02:46,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:02:46,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:02:46,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:02:46,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:02:46,405 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:02:46,406 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:02:46,407 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/random/RanFile055.bpl [2019-08-05 10:02:46,407 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/random/RanFile055.bpl' [2019-08-05 10:02:46,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:02:46,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:02:46,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:02:46,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:02:46,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:02:46,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,546 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:02:46,549 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:02:46,549 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:02:46,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:02:46,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:02:46,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:02:46,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:02:46,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... [2019-08-05 10:02:46,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:02:46,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:02:46,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:02:46,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:02:46,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:02:46,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:02:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:02:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:02:49,123 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:02:49,123 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:02:49,125 INFO L202 PluginConnector]: Adding new model RanFile055.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:02:49 BoogieIcfgContainer [2019-08-05 10:02:49,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:02:49,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:02:49,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:02:49,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:02:49,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:02:46" (1/2) ... [2019-08-05 10:02:49,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d85da9c and model type RanFile055.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:02:49, skipping insertion in model container [2019-08-05 10:02:49,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RanFile055.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:02:49" (2/2) ... [2019-08-05 10:02:49,134 INFO L109 eAbstractionObserver]: Analyzing ICFG RanFile055.bpl [2019-08-05 10:02:49,144 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:02:49,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 10:02:49,172 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 10:02:49,200 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:02:49,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:02:49,201 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:02:49,201 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:02:49,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:02:49,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:02:49,202 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:02:49,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:02:49,202 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:02:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2019-08-05 10:02:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-08-05 10:02:49,231 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:02:49,232 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:02:49,235 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:02:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:02:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash -646198355, now seen corresponding path program 1 times [2019-08-05 10:02:49,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:02:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:02:49,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:02:49,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:02:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:02:49,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:02:49,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:02:49,465 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:02:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:02:49,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:02:49,486 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2019-08-05 10:02:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:02:50,017 INFO L93 Difference]: Finished difference Result 72 states and 132 transitions. [2019-08-05 10:02:50,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:02:50,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-08-05 10:02:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:02:50,036 INFO L225 Difference]: With dead ends: 72 [2019-08-05 10:02:50,037 INFO L226 Difference]: Without dead ends: 63 [2019-08-05 10:02:50,040 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:02:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-08-05 10:02:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-08-05 10:02:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-08-05 10:02:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 114 transitions. [2019-08-05 10:02:50,089 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 114 transitions. Word has length 18 [2019-08-05 10:02:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:02:50,090 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 114 transitions. [2019-08-05 10:02:50,090 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:02:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 114 transitions. [2019-08-05 10:02:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-08-05 10:02:50,092 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:02:50,092 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:02:50,094 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:02:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:02:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1781700166, now seen corresponding path program 1 times [2019-08-05 10:02:50,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:02:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:02:50,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:02:50,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:02:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:02:50,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:02:50,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:02:50,175 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:02:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:02:50,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:02:50,179 INFO L87 Difference]: Start difference. First operand 63 states and 114 transitions. Second operand 3 states. [2019-08-05 10:02:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:02:50,659 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2019-08-05 10:02:50,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:02:50,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-08-05 10:02:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:02:50,662 INFO L225 Difference]: With dead ends: 106 [2019-08-05 10:02:50,663 INFO L226 Difference]: Without dead ends: 103 [2019-08-05 10:02:50,665 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:02:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-08-05 10:02:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2019-08-05 10:02:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-08-05 10:02:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 110 transitions. [2019-08-05 10:02:50,674 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 110 transitions. Word has length 19 [2019-08-05 10:02:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:02:50,675 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 110 transitions. [2019-08-05 10:02:50,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:02:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 110 transitions. [2019-08-05 10:02:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-08-05 10:02:50,676 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:02:50,676 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:02:50,677 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:02:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:02:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1844715901, now seen corresponding path program 1 times [2019-08-05 10:02:50,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:02:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:02:50,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:02:50,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:02:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 10:02:50,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:02:50,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-08-05 10:02:50,979 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:02:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:02:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:02:50,980 INFO L87 Difference]: Start difference. First operand 61 states and 110 transitions. Second operand 6 states. [2019-08-05 10:02:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:02:52,815 INFO L93 Difference]: Finished difference Result 165 states and 309 transitions. [2019-08-05 10:02:52,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-08-05 10:02:52,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-08-05 10:02:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:02:52,818 INFO L225 Difference]: With dead ends: 165 [2019-08-05 10:02:52,819 INFO L226 Difference]: Without dead ends: 105 [2019-08-05 10:02:52,819 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-08-05 10:02:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-08-05 10:02:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 80. [2019-08-05 10:02:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-08-05 10:02:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2019-08-05 10:02:52,830 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 21 [2019-08-05 10:02:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:02:52,830 INFO L475 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2019-08-05 10:02:52,830 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:02:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2019-08-05 10:02:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-08-05 10:02:52,832 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:02:52,832 INFO L399 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] [2019-08-05 10:02:52,832 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:02:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:02:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1111081464, now seen corresponding path program 1 times [2019-08-05 10:02:52,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:02:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:02:52,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-05 10:02:52,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:02:52,907 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:02:53,053 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:02:53,320 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-08-05 10:02:53,484 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-08-05 10:02:53,487 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:02:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 10:02:54,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:02:54,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-08-05 10:02:54,804 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-08-05 10:02:54,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-08-05 10:02:54,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2019-08-05 10:02:54,805 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand 10 states. [2019-08-05 10:03:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:03:09,843 INFO L93 Difference]: Finished difference Result 108 states and 194 transitions. [2019-08-05 10:03:09,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-08-05 10:03:09,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-08-05 10:03:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:03:09,845 INFO L225 Difference]: With dead ends: 108 [2019-08-05 10:03:09,845 INFO L226 Difference]: Without dead ends: 105 [2019-08-05 10:03:09,846 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=32, Invalid=97, Unknown=3, NotChecked=0, Total=132 [2019-08-05 10:03:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-08-05 10:03:09,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2019-08-05 10:03:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-08-05 10:03:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 157 transitions. [2019-08-05 10:03:09,855 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 157 transitions. Word has length 22 [2019-08-05 10:03:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:03:09,856 INFO L475 AbstractCegarLoop]: Abstraction has 88 states and 157 transitions. [2019-08-05 10:03:09,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-08-05 10:03:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 157 transitions. [2019-08-05 10:03:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-08-05 10:03:09,858 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:03:09,858 INFO L399 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] [2019-08-05 10:03:09,858 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:03:09,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:03:09,859 INFO L82 PathProgramCache]: Analyzing trace with hash -549948427, now seen corresponding path program 1 times [2019-08-05 10:03:09,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:03:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:03:09,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:03:09,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:03:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-08-05 10:03:09,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:03:09,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:03:09,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:03:09,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:03:09,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:03:09,946 INFO L87 Difference]: Start difference. First operand 88 states and 157 transitions. Second operand 5 states. [2019-08-05 10:03:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:03:10,651 INFO L93 Difference]: Finished difference Result 128 states and 228 transitions. [2019-08-05 10:03:10,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:03:10,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-08-05 10:03:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:03:10,653 INFO L225 Difference]: With dead ends: 128 [2019-08-05 10:03:10,653 INFO L226 Difference]: Without dead ends: 105 [2019-08-05 10:03:10,654 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:03:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-08-05 10:03:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2019-08-05 10:03:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-08-05 10:03:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 173 transitions. [2019-08-05 10:03:10,662 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 173 transitions. Word has length 22 [2019-08-05 10:03:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:03:10,663 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 173 transitions. [2019-08-05 10:03:10,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:03:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 173 transitions. [2019-08-05 10:03:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-08-05 10:03:10,664 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:03:10,664 INFO L399 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] [2019-08-05 10:03:10,665 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:03:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:03:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1137657827, now seen corresponding path program 1 times [2019-08-05 10:03:10,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:03:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:03:10,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:03:10,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:03:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 10:03:10,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:03:10,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:03:10,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:03:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:03:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:03:10,801 INFO L87 Difference]: Start difference. First operand 97 states and 173 transitions. Second operand 5 states. [2019-08-05 10:03:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:03:11,326 INFO L93 Difference]: Finished difference Result 142 states and 257 transitions. [2019-08-05 10:03:11,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:03:11,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-08-05 10:03:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:03:11,329 INFO L225 Difference]: With dead ends: 142 [2019-08-05 10:03:11,329 INFO L226 Difference]: Without dead ends: 121 [2019-08-05 10:03:11,329 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:03:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-08-05 10:03:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2019-08-05 10:03:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-08-05 10:03:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 188 transitions. [2019-08-05 10:03:11,337 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 188 transitions. Word has length 22 [2019-08-05 10:03:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:03:11,338 INFO L475 AbstractCegarLoop]: Abstraction has 105 states and 188 transitions. [2019-08-05 10:03:11,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:03:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 188 transitions. [2019-08-05 10:03:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-08-05 10:03:11,339 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:03:11,339 INFO L399 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] [2019-08-05 10:03:11,340 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:03:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:03:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash 446025299, now seen corresponding path program 1 times [2019-08-05 10:03:11,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:03:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:03:11,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:03:11,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:03:11,428 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:03:11,430 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:03:11,431 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:04:16,485 WARN L188 SmtUtils]: Spent 1.08 m on a formula simplification that was a NOOP. DAG size: 109 [2019-08-05 10:04:16,488 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-08-05 10:04:16,730 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2019-08-05 10:04:16,731 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:04:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 10:04:16,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:04:16,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-08-05 10:04:16,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-08-05 10:04:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-08-05 10:04:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:04:16,802 INFO L87 Difference]: Start difference. First operand 105 states and 188 transitions. Second operand 8 states. [2019-08-05 10:05:38,723 WARN L188 SmtUtils]: Spent 1.34 m on a formula simplification that was a NOOP. DAG size: 110 [2019-08-05 10:07:34,129 WARN L188 SmtUtils]: Spent 1.92 m on a formula simplification that was a NOOP. DAG size: 134 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown