java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:06:56,569 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:06:56,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:06:56,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:06:56,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:06:56,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:06:56,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:06:56,588 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:06:56,590 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:06:56,591 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:06:56,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:06:56,592 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:06:56,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:06:56,594 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:06:56,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:06:56,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:06:56,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:06:56,599 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:06:56,601 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:06:56,603 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:06:56,604 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:06:56,605 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:06:56,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:06:56,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:06:56,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:06:56,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:06:56,616 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:06:56,617 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:06:56,618 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:06:56,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:06:56,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:06:56,625 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:06:56,625 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:06:56,626 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:06:56,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:06:56,627 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:06:56,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:06:56,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:06:56,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:06:56,649 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:06:56,649 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:06:56,649 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:06:56,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:06:56,653 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:06:56,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:06:56,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:06:56,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:06:56,745 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:06:56,746 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:06:56,747 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-09-26 09:06:56,747 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl' [2018-09-26 09:06:56,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:06:56,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:06:56,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:06:56,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:06:56,840 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:06:56,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:06:56,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:06:56,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:06:56,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:06:56,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... [2018-09-26 09:06:56,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:06:56,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:06:56,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:06:56,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:06:56,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 09:06:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 09:06:57,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 09:06:57,694 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 09:06:57,695 INFO L202 PluginConnector]: Adding new model s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:06:57 BoogieIcfgContainer [2018-09-26 09:06:57,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:06:57,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:06:57,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:06:57,699 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:06:57,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:06:56" (1/2) ... [2018-09-26 09:06:57,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121b0062 and model type s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:06:57, skipping insertion in model container [2018-09-26 09:06:57,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:06:57" (2/2) ... [2018-09-26 09:06:57,703 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-09-26 09:06:57,714 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:06:57,723 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:06:57,776 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:06:57,777 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:06:57,777 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:06:57,777 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:06:57,778 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:06:57,778 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:06:57,778 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:06:57,778 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:06:57,779 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:06:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-09-26 09:06:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-26 09:06:57,812 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:06:57,813 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:06:57,822 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:06:57,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:06:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash -839018561, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:06:57,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:06:58,406 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:06:58,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:06:58,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 09:06:58,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 09:06:58,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:06:58,422 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-09-26 09:06:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:06:58,673 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2018-09-26 09:06:58,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:06:58,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-26 09:06:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:06:58,690 INFO L225 Difference]: With dead ends: 37 [2018-09-26 09:06:58,690 INFO L226 Difference]: Without dead ends: 24 [2018-09-26 09:06:58,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 380 SyntacticMatches, 8 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:06:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-26 09:06:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-26 09:06:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-26 09:06:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2018-09-26 09:06:58,738 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 11 [2018-09-26 09:06:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:06:58,739 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2018-09-26 09:06:58,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 09:06:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2018-09-26 09:06:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-26 09:06:58,740 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:06:58,741 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:06:58,741 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:06:58,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:06:58,742 INFO L82 PathProgramCache]: Analyzing trace with hash -447746379, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:06:58,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:06:59,935 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-26 09:07:01,025 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-26 09:07:01,205 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:01,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 09:07:01,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 09:07:01,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 09:07:01,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-26 09:07:01,210 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2018-09-26 09:07:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:01,512 INFO L93 Difference]: Finished difference Result 36 states and 57 transitions. [2018-09-26 09:07:01,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 09:07:01,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-09-26 09:07:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:01,515 INFO L225 Difference]: With dead ends: 36 [2018-09-26 09:07:01,515 INFO L226 Difference]: Without dead ends: 34 [2018-09-26 09:07:01,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1897 SyntacticMatches, 14 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-26 09:07:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-26 09:07:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-09-26 09:07:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-26 09:07:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2018-09-26 09:07:01,528 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 19 [2018-09-26 09:07:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:01,529 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2018-09-26 09:07:01,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 09:07:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2018-09-26 09:07:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 09:07:01,530 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:01,530 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 09:07:01,530 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:01,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1342854537, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:01,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:01,667 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-09-26 09:07:02,172 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-09-26 09:07:03,239 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:03,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 09:07:03,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 09:07:03,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 09:07:03,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-26 09:07:03,244 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2018-09-26 09:07:03,439 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-09-26 09:07:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:04,044 INFO L93 Difference]: Finished difference Result 77 states and 127 transitions. [2018-09-26 09:07:04,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 09:07:04,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-09-26 09:07:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:04,048 INFO L225 Difference]: With dead ends: 77 [2018-09-26 09:07:04,048 INFO L226 Difference]: Without dead ends: 75 [2018-09-26 09:07:04,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2801 GetRequests, 2773 SyntacticMatches, 16 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-09-26 09:07:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-26 09:07:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2018-09-26 09:07:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-26 09:07:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2018-09-26 09:07:04,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 22 [2018-09-26 09:07:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:04,073 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2018-09-26 09:07:04,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 09:07:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2018-09-26 09:07:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-26 09:07:04,078 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:04,078 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 09:07:04,078 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:04,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1134984641, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:04,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:06,439 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-09-26 09:07:06,737 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-09-26 09:07:07,519 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:07,676 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-09-26 09:07:08,101 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-09-26 09:07:08,512 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:11,552 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:11,860 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-09-26 09:07:12,550 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:13,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:13,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-26 09:07:13,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 09:07:13,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 09:07:13,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2018-09-26 09:07:13,178 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand 6 states. [2018-09-26 09:07:13,502 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-09-26 09:07:13,901 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-09-26 09:07:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:14,365 INFO L93 Difference]: Finished difference Result 86 states and 141 transitions. [2018-09-26 09:07:14,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 09:07:14,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-09-26 09:07:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:14,368 INFO L225 Difference]: With dead ends: 86 [2018-09-26 09:07:14,368 INFO L226 Difference]: Without dead ends: 84 [2018-09-26 09:07:14,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9104 GetRequests, 9037 SyntacticMatches, 36 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2018-09-26 09:07:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-26 09:07:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 35. [2018-09-26 09:07:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-26 09:07:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2018-09-26 09:07:14,387 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 30 [2018-09-26 09:07:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:14,388 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2018-09-26 09:07:14,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 09:07:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2018-09-26 09:07:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-26 09:07:14,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:14,389 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 09:07:14,389 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:14,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1476524193, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:14,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:14,595 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-09-26 09:07:15,971 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-09-26 09:07:17,739 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-09-26 09:07:18,270 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-09-26 09:07:19,033 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-09-26 09:07:19,332 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-09-26 09:07:20,039 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-09-26 09:07:24,725 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-09-26 09:07:26,190 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:26,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-26 09:07:26,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 09:07:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 09:07:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2018-09-26 09:07:26,192 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 6 states. [2018-09-26 09:07:26,523 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-09-26 09:07:27,072 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-09-26 09:07:27,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:27,325 INFO L93 Difference]: Finished difference Result 100 states and 164 transitions. [2018-09-26 09:07:27,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 09:07:27,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-09-26 09:07:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:27,328 INFO L225 Difference]: With dead ends: 100 [2018-09-26 09:07:27,329 INFO L226 Difference]: Without dead ends: 98 [2018-09-26 09:07:27,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17372 GetRequests, 17317 SyntacticMatches, 31 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2018-09-26 09:07:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-26 09:07:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2018-09-26 09:07:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-26 09:07:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 106 transitions. [2018-09-26 09:07:27,367 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 106 transitions. Word has length 31 [2018-09-26 09:07:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:27,367 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 106 transitions. [2018-09-26 09:07:27,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 09:07:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 106 transitions. [2018-09-26 09:07:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-26 09:07:27,369 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:27,369 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:07:27,369 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:27,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash 264845463, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) [2018-09-26 09:07:27,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:29,179 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-09-26 09:07:29,472 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-09-26 09:07:30,159 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:30,953 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-09-26 09:07:31,362 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-09-26 09:07:31,810 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:32,285 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-09-26 09:07:35,610 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:36,013 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-09-26 09:07:36,817 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-26 09:07:37,038 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-09-26 09:07:37,563 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-09-26 09:07:37,976 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-09-26 09:07:38,930 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-09-26 09:07:39,160 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-09-26 09:07:39,561 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-09-26 09:07:40,265 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:07:40,947 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-09-26 09:07:42,326 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:07:45,699 WARN L178 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-09-26 09:07:46,168 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-09-26 09:07:47,805 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:07:50,136 WARN L178 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-09-26 09:07:58,320 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:07:58,952 WARN L178 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-09-26 09:08:02,011 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:08:02,864 WARN L178 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-09-26 09:08:03,405 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-09-26 09:08:52,405 WARN L178 SmtUtils]: Spent 48.73 s on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-09-26 09:08:53,045 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-09-26 09:08:55,985 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2018-09-26 09:09:22,206 WARN L178 SmtUtils]: Spent 26.10 s on a formula simplification that was a NOOP. DAG size: 80 [2018-09-26 09:09:22,657 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-09-26 09:09:23,049 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-09-26 09:09:24,175 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2018-09-26 09:09:25,876 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 98 [2018-09-26 09:09:29,650 WARN L178 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-09-26 09:09:30,661 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-09-26 09:09:31,914 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 95 [2018-09-26 09:09:33,236 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-09-26 09:09:37,401 WARN L178 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-09-26 09:09:38,084 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-09-26 09:09:39,123 WARN L178 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-09-26 09:09:41,969 WARN L178 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-09-26 09:09:43,559 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-09-26 09:09:48,063 WARN L178 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-09-26 09:09:49,135 WARN L178 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-09-26 09:10:26,003 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-09-26 09:10:27,234 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-09-26 09:10:50,893 WARN L178 SmtUtils]: Spent 23.21 s on a formula simplification that was a NOOP. DAG size: 113 [2018-09-26 09:11:00,442 WARN L178 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 109 [2018-09-26 09:11:01,612 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-09-26 09:11:09,600 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:11:09,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-26 09:11:09,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 09:11:09,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 09:11:09,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=5647, Unknown=0, NotChecked=0, Total=7140 [2018-09-26 09:11:09,605 INFO L87 Difference]: Start difference. First operand 65 states and 106 transitions. Second operand 7 states. [2018-09-26 09:11:10,750 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 125 [2018-09-26 09:11:11,941 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 125 [2018-09-26 09:11:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:11:12,464 INFO L93 Difference]: Finished difference Result 89 states and 145 transitions. [2018-09-26 09:11:12,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 09:11:12,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-09-26 09:11:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:11:12,465 INFO L225 Difference]: With dead ends: 89 [2018-09-26 09:11:12,466 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 09:11:12,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53451 GetRequests, 53279 SyntacticMatches, 87 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 145.8s TimeCoverageRelationStatistics Valid=1600, Invalid=5882, Unknown=0, NotChecked=0, Total=7482 [2018-09-26 09:11:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 09:11:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 09:11:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 09:11:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 09:11:12,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-09-26 09:11:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:11:12,470 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 09:11:12,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 09:11:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 09:11:12,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 09:11:12,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 09:11:12,900 WARN L178 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:13,130 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:13,323 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:13,615 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-09-26 09:11:13,945 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2018-09-26 09:11:14,169 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:14,450 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-09-26 09:11:14,628 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:14,791 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:14,949 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-09-26 09:11:19,256 WARN L178 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-09-26 09:11:24,094 WARN L178 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-09-26 09:11:26,171 WARN L178 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-09-26 09:11:28,053 WARN L178 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 113 [2018-09-26 09:11:30,413 WARN L178 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 152 DAG size of output: 127 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown