java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:49:53,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:49:53,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:49:53,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:49:53,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:49:53,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:49:53,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:49:53,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:49:53,509 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:49:53,510 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:49:53,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:49:53,511 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:49:53,513 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:49:53,513 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:49:53,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:49:53,516 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:49:53,517 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:49:53,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:49:53,521 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:49:53,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:49:53,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:49:53,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:49:53,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:49:53,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:49:53,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:49:53,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:49:53,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:49:53,532 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:49:53,533 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:49:53,534 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:49:53,534 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:49:53,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:49:53,537 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:49:53,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:49:53,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:49:53,567 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:49:53,567 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:49:53,568 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:49:53,568 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:49:53,568 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:49:53,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:49:53,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:49:53,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:49:53,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:49:53,652 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:49:53,653 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:49:53,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl [2018-07-23 13:49:53,655 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl' [2018-07-23 13:49:53,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:49:53,771 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:49:53,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:49:53,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:49:53,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:49:53,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:49:53,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:49:53,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:49:53,871 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:49:53,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/1) ... [2018-07-23 13:49:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:49:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:49:54,377 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:49:54,378 INFO L202 PluginConnector]: Adding new model s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:54 BoogieIcfgContainer [2018-07-23 13:49:54,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:49:54,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:49:54,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:49:54,383 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:49:54,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:53" (1/2) ... [2018-07-23 13:49:54,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3cfcd and model type s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:49:54, skipping insertion in model container [2018-07-23 13:49:54,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:54" (2/2) ... [2018-07-23 13:49:54,388 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2_alt.BV.c.cil.c_13.bpl [2018-07-23 13:49:54,398 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:49:54,406 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:49:54,451 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:49:54,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:49:54,452 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:49:54,453 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:49:54,453 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:49:54,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:49:54,453 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:49:54,453 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:49:54,454 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:49:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-07-23 13:49:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:49:54,479 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:54,480 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:54,481 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash 212232727, now seen corresponding path program 1 times [2018-07-23 13:49:54,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,674 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:54,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:49:54,677 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,678 INFO L185 omatonBuilderFactory]: Interpolants [16#(not (= 8672 ULTIMATE.start_ssl3_accept_~s__state~4)), 14#true, 15#false] [2018-07-23 13:49:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:54,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:54,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:54,696 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2018-07-23 13:49:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:54,790 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2018-07-23 13:49:54,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:54,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-07-23 13:49:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:54,809 INFO L225 Difference]: With dead ends: 26 [2018-07-23 13:49:54,809 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 13:49:54,813 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 13:49:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 13:49:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 13:49:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2018-07-23 13:49:54,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 23 transitions. Word has length 8 [2018-07-23 13:49:54,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:54,851 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 23 transitions. [2018-07-23 13:49:54,851 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2018-07-23 13:49:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 13:49:54,852 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:54,853 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:54,853 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -250815121, now seen corresponding path program 1 times [2018-07-23 13:49:54,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,918 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:54,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:49:54,921 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,922 INFO L185 omatonBuilderFactory]: Interpolants [101#true, 102#false, 103#(<= ULTIMATE.start_ssl3_accept_~blastFlag~4 1)] [2018-07-23 13:49:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:54,926 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:54,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:54,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:54,927 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. Second operand 3 states. [2018-07-23 13:49:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:54,977 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2018-07-23 13:49:54,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:54,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-07-23 13:49:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:54,979 INFO L225 Difference]: With dead ends: 31 [2018-07-23 13:49:54,979 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 13:49:54,981 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 13:49:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 13:49:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 13:49:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2018-07-23 13:49:54,993 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 11 [2018-07-23 13:49:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:54,994 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2018-07-23 13:49:54,994 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2018-07-23 13:49:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 13:49:54,995 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:54,995 INFO L357 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:54,996 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 180957294, now seen corresponding path program 1 times [2018-07-23 13:49:54,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 13:49:55,031 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:55,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:49:55,031 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,032 INFO L185 omatonBuilderFactory]: Interpolants [224#true, 225#false, 226#(not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4))] [2018-07-23 13:49:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 13:49:55,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:55,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:55,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,034 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2018-07-23 13:49:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,097 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2018-07-23 13:49:55,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:55,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-07-23 13:49:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,099 INFO L225 Difference]: With dead ends: 65 [2018-07-23 13:49:55,099 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 13:49:55,102 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 13:49:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 13:49:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 13:49:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-07-23 13:49:55,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 17 [2018-07-23 13:49:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,129 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-07-23 13:49:55,129 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2018-07-23 13:49:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 13:49:55,133 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:55,134 INFO L357 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:55,134 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:55,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1338834922, now seen corresponding path program 1 times [2018-07-23 13:49:55,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:49:55,215 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:55,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:49:55,216 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,216 INFO L185 omatonBuilderFactory]: Interpolants [432#false, 433#(<= 8656 ULTIMATE.start_ssl3_accept_~s__state~4), 431#true] [2018-07-23 13:49:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:49:55,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:55,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:55,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,220 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-07-23 13:49:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,295 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2018-07-23 13:49:55,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:55,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-07-23 13:49:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,298 INFO L225 Difference]: With dead ends: 83 [2018-07-23 13:49:55,298 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 13:49:55,299 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 13:49:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-07-23 13:49:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-23 13:49:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2018-07-23 13:49:55,322 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 20 [2018-07-23 13:49:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,323 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2018-07-23 13:49:55,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2018-07-23 13:49:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 13:49:55,326 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:55,327 INFO L357 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:55,327 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -18544326, now seen corresponding path program 1 times [2018-07-23 13:49:55,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:55,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 13:49:55,406 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,407 INFO L185 omatonBuilderFactory]: Interpolants [688#true, 689#false, 690#(= ULTIMATE.start_ssl3_accept_~blastFlag~4 1), 691#(= ULTIMATE.start_ssl3_accept_~blastFlag~4 2), 692#(<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)] [2018-07-23 13:49:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:49:55,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:49:55,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:49:55,409 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 5 states. [2018-07-23 13:49:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,506 INFO L93 Difference]: Finished difference Result 129 states and 166 transitions. [2018-07-23 13:49:55,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:49:55,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-07-23 13:49:55,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,509 INFO L225 Difference]: With dead ends: 129 [2018-07-23 13:49:55,509 INFO L226 Difference]: Without dead ends: 86 [2018-07-23 13:49:55,510 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:49:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-23 13:49:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2018-07-23 13:49:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 13:49:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2018-07-23 13:49:55,529 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 21 [2018-07-23 13:49:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,531 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2018-07-23 13:49:55,531 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:49:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2018-07-23 13:49:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-23 13:49:55,532 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:55,533 INFO L357 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:55,534 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1570940154, now seen corresponding path program 1 times [2018-07-23 13:49:55,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-23 13:49:55,569 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:55,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:49:55,570 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,571 INFO L185 omatonBuilderFactory]: Interpolants [1085#true, 1086#false, 1087#(not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4))] [2018-07-23 13:49:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-23 13:49:55,571 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:55,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:55,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,572 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 3 states. [2018-07-23 13:49:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,625 INFO L93 Difference]: Finished difference Result 137 states and 171 transitions. [2018-07-23 13:49:55,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:55,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-07-23 13:49:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,628 INFO L225 Difference]: With dead ends: 137 [2018-07-23 13:49:55,629 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 13:49:55,630 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 13:49:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-07-23 13:49:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 13:49:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2018-07-23 13:49:55,659 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 23 [2018-07-23 13:49:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,660 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2018-07-23 13:49:55,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2018-07-23 13:49:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 13:49:55,664 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:55,664 INFO L357 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:55,664 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:55,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1576186804, now seen corresponding path program 1 times [2018-07-23 13:49:55,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-23 13:49:55,703 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:55,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:49:55,704 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,705 INFO L185 omatonBuilderFactory]: Interpolants [1500#true, 1501#false, 1502#(not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4))] [2018-07-23 13:49:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-23 13:49:55,705 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:49:55,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:49:55,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,707 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 3 states. [2018-07-23 13:49:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,743 INFO L93 Difference]: Finished difference Result 142 states and 178 transitions. [2018-07-23 13:49:55,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:49:55,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-07-23 13:49:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,747 INFO L225 Difference]: With dead ends: 142 [2018-07-23 13:49:55,747 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 13:49:55,748 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:49:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 13:49:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 13:49:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 13:49:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2018-07-23 13:49:55,773 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 36 [2018-07-23 13:49:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,774 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2018-07-23 13:49:55,774 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:49:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2018-07-23 13:49:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 13:49:55,778 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:55,778 INFO L357 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 13:49:55,778 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084167, now seen corresponding path program 1 times [2018-07-23 13:49:55,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-23 13:49:55,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:55,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:49:55,849 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:55,849 INFO L185 omatonBuilderFactory]: Interpolants [1929#true, 1930#false, 1931#(<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4), 1932#(<= 8640 ULTIMATE.start_ssl3_accept_~s__state~4)] [2018-07-23 13:49:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-23 13:49:55,850 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:55,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:55,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:55,851 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 4 states. [2018-07-23 13:49:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:55,930 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2018-07-23 13:49:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:49:55,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-07-23 13:49:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:55,931 INFO L225 Difference]: With dead ends: 145 [2018-07-23 13:49:55,932 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:49:55,933 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:49:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:49:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:49:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:49:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:49:55,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-07-23 13:49:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:55,934 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:49:55,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:49:55,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:49:55,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:49:56,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 13:49:56,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 13:49:56,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 13:49:56,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 13:49:56,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-23 13:49:56,269 INFO L421 ceAbstractionStarter]: For program point L343(lines 343 358) no Hoare annotation was computed. [2018-07-23 13:49:56,269 INFO L421 ceAbstractionStarter]: For program point L309(lines 304 328) no Hoare annotation was computed. [2018-07-23 13:49:56,271 INFO L417 ceAbstractionStarter]: At program point L254(lines 254 270) the Hoare annotation is: (let ((.cse1 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4))) (.cse2 (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)) (.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4)))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~4 2) .cse0 .cse1) (and (not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) .cse2 .cse0 .cse1) (and (<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4) .cse2 .cse0) (= ULTIMATE.start_ssl3_accept_~blastFlag~4 1))) [2018-07-23 13:49:56,272 INFO L417 ceAbstractionStarter]: At program point L298(lines 298 317) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)) (.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4)))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~4 1) .cse0) (and (<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4) .cse1 .cse0) (and .cse1 .cse0 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4))))) [2018-07-23 13:49:56,272 INFO L417 ceAbstractionStarter]: At program point L374(lines 374 381) the Hoare annotation is: false [2018-07-23 13:49:56,272 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 2 383) no Hoare annotation was computed. [2018-07-23 13:49:56,273 INFO L417 ceAbstractionStarter]: At program point L380(lines 269 380) the Hoare annotation is: (let ((.cse0 (<= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) (.cse1 (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~4 2)) (and (<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4) .cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4))) (and (not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) .cse0 .cse1) (= ULTIMATE.start_ssl3_accept_~blastFlag~4 1))) [2018-07-23 13:49:56,273 INFO L421 ceAbstractionStarter]: For program point L360(lines 357 375) no Hoare annotation was computed. [2018-07-23 13:49:56,273 INFO L421 ceAbstractionStarter]: For program point L286(lines 286 305) no Hoare annotation was computed. [2018-07-23 13:49:56,274 INFO L417 ceAbstractionStarter]: At program point L327(lines 327 344) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4))) (.cse1 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4)))) (or (and (not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) (not (= 8672 ULTIMATE.start_ssl3_accept_~s__state~4)) .cse0 .cse1) (and (and (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3) .cse0) .cse1))) [2018-07-23 13:49:56,274 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 2 383) the Hoare annotation is: true [2018-07-23 13:49:56,274 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 2 383) the Hoare annotation is: false [2018-07-23 13:49:56,275 INFO L417 ceAbstractionStarter]: At program point L274(lines 274 287) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4)))) (or (and (<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4) .cse0 .cse1) (and .cse0 .cse1 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4))) (= ULTIMATE.start_ssl3_accept_~blastFlag~4 1))) [2018-07-23 13:49:56,275 INFO L417 ceAbstractionStarter]: At program point L351(lines 351 371) the Hoare annotation is: (and (not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) (<= 8656 ULTIMATE.start_ssl3_accept_~s__state~4) (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)) [2018-07-23 13:49:56,276 INFO L417 ceAbstractionStarter]: At program point L278(lines 241 278) the Hoare annotation is: (let ((.cse1 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~4))) (.cse2 (<= ULTIMATE.start_ssl3_accept_~blastFlag~4 3)) (.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~4)))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~4 2) .cse0 .cse1) (and (not (= 8656 ULTIMATE.start_ssl3_accept_~s__state~4)) .cse2 .cse0 .cse1) (and (<= 8640 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~4) .cse2 .cse0) (= ULTIMATE.start_ssl3_accept_~blastFlag~4 1))) [2018-07-23 13:49:56,276 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 382) the Hoare annotation is: false [2018-07-23 13:49:56,291 INFO L202 PluginConnector]: Adding new model s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:49:56 BoogieIcfgContainer [2018-07-23 13:49:56,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:49:56,292 INFO L168 Benchmark]: Toolchain (without parser) took 2522.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:56,297 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:49:56,298 INFO L168 Benchmark]: Boogie Preprocessor took 97.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:49:56,299 INFO L168 Benchmark]: RCFGBuilder took 508.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:56,300 INFO L168 Benchmark]: TraceAbstraction took 1911.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:56,308 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 0.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 508.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1911.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 382]: 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 - InvariantResult [Line: 254]: Loop Invariant Derived loop invariant: ((((ssl3_accept_~blastFlag~4 == 2 && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4)) || (((!(8656 == ssl3_accept_~s__state~4) && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4))) || ((8640 <= ssl3_accept_~s__s3__tmp__next_state___0~4 && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4))) || ssl3_accept_~blastFlag~4 == 1 - InvariantResult [Line: 298]: Loop Invariant Derived loop invariant: ((ssl3_accept_~blastFlag~4 == 1 && !(8496 == ssl3_accept_~s__state~4)) || ((8640 <= ssl3_accept_~s__s3__tmp__next_state___0~4 && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4))) || ((ssl3_accept_~blastFlag~4 <= 3 && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4)) - InvariantResult [Line: 327]: Loop Invariant Derived loop invariant: (((!(8656 == ssl3_accept_~s__state~4) && !(8672 == ssl3_accept_~s__state~4)) && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4)) || ((ssl3_accept_~blastFlag~4 <= 3 && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4)) - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: ((((ssl3_accept_~blastFlag~4 == 2 && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4)) || (((!(8656 == ssl3_accept_~s__state~4) && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4))) || ((8640 <= ssl3_accept_~s__s3__tmp__next_state___0~4 && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4))) || ssl3_accept_~blastFlag~4 == 1 - InvariantResult [Line: 274]: Loop Invariant Derived loop invariant: (((8640 <= ssl3_accept_~s__s3__tmp__next_state___0~4 && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4)) || ((ssl3_accept_~blastFlag~4 <= 3 && !(8496 == ssl3_accept_~s__state~4)) && !(8448 == ssl3_accept_~s__state~4))) || ssl3_accept_~blastFlag~4 == 1 - InvariantResult [Line: 351]: Loop Invariant Derived loop invariant: (!(8656 == ssl3_accept_~s__state~4) && 8656 <= ssl3_accept_~s__state~4) && ssl3_accept_~blastFlag~4 <= 3 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 269]: Loop Invariant Derived loop invariant: (((8656 <= ssl3_accept_~s__state~4 && ssl3_accept_~blastFlag~4 == 2) || ((8640 <= ssl3_accept_~s__s3__tmp__next_state___0~4 && ssl3_accept_~blastFlag~4 <= 3) && !(8496 == ssl3_accept_~s__state~4))) || ((!(8656 == ssl3_accept_~s__state~4) && 8656 <= ssl3_accept_~s__state~4) && ssl3_accept_~blastFlag~4 <= 3)) || ssl3_accept_~blastFlag~4 == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 37 SDslu, 61 SDs, 0 SdLazy, 137 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 246/264 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 92 NumberOfFragments, 224 HoareAnnotationTreeSize, 11 FomulaSimplifications, 1667 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 615 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 7443 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 246/264 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/s3_srvr_2_alt.BV.c.cil.c_13.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-49-56-330.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_2_alt.BV.c.cil.c_13.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-49-56-330.csv Received shutdown request...