java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./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-e6fd87c [2018-07-25 14:14:47,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:14:47,172 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:14:47,190 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:14:47,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:14:47,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:14:47,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:14:47,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:14:47,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:14:47,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:14:47,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:14:47,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:14:47,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:14:47,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:14:47,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:14:47,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:14:47,208 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:14:47,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:14:47,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:14:47,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:14:47,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:14:47,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:14:47,230 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:14:47,231 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:14:47,231 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:14:47,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:14:47,234 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:14:47,235 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:14:47,236 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:14:47,239 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:14:47,240 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:14:47,240 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:14:47,240 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:14:47,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:14:47,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:14:47,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:14:47,244 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 14:14:47,258 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:14:47,259 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:14:47,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:14:47,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:14:47,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:14:47,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:14:47,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:14:47,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:14:47,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:14:47,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:14:47,342 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:14:47,343 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:14:47,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-07-25 14:14:47,344 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl' [2018-07-25 14:14:47,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:14:47,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:14:47,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:14:47,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:14:47,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:14:47,457 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,477 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:14:47,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:14:47,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:14:47,485 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:14:47,496 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,497 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,500 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,501 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,520 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,526 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,535 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 25.07 02:14:47" (1/1) ... [2018-07-25 14:14:47,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:14:47,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:14:47,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:14:47,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:14:47,548 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 25.07 02:14:47" (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 [2018-07-25 14:14:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:14:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:14:48,317 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:14:48,317 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 25.07 02:14:48 BoogieIcfgContainer [2018-07-25 14:14:48,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:14:48,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:14:48,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:14:48,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:14:48,323 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 25.07 02:14:47" (1/2) ... [2018-07-25 14:14:48,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798d88f2 and model type s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:14:48, skipping insertion in model container [2018-07-25 14:14:48,324 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 25.07 02:14:48" (2/2) ... [2018-07-25 14:14:48,326 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-07-25 14:14:48,336 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:14:48,343 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:14:48,383 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:14:48,384 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:14:48,384 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:14:48,384 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:14:48,385 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:14:48,385 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:14:48,385 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:14:48,385 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:14:48,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:14:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-07-25 14:14:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 14:14:48,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:14:48,409 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:14:48,411 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:14:48,416 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 [2018-07-25 14:14:48,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:14:49,017 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:14:49,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 14:14:49,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 14:14:49,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 14:14:49,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:14:49,032 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-07-25 14:14:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:14:49,473 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2018-07-25 14:14:49,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:14:49,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-07-25 14:14:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:14:49,493 INFO L225 Difference]: With dead ends: 37 [2018-07-25 14:14:49,493 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 14:14:49,497 INFO L574 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 [2018-07-25 14:14:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 14:14:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 14:14:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 14:14:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2018-07-25 14:14:49,538 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 11 [2018-07-25 14:14:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:14:49,538 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2018-07-25 14:14:49,538 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 14:14:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2018-07-25 14:14:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 14:14:49,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:14:49,540 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:14:49,541 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:14:49,541 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 [2018-07-25 14:14:49,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:14:50,426 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-07-25 14:14:51,256 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:14:51,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 14:14:51,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 14:14:51,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 14:14:51,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 14:14:51,259 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2018-07-25 14:14:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:14:51,704 INFO L93 Difference]: Finished difference Result 36 states and 57 transitions. [2018-07-25 14:14:51,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 14:14:51,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-07-25 14:14:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:14:51,707 INFO L225 Difference]: With dead ends: 36 [2018-07-25 14:14:51,707 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 14:14:51,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1897 SyntacticMatches, 14 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 14:14:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 14:14:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-07-25 14:14:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 14:14:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2018-07-25 14:14:51,722 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 19 [2018-07-25 14:14:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:14:51,723 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2018-07-25 14:14:51,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 14:14:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2018-07-25 14:14:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 14:14:51,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:14:51,725 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:14:51,725 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:14:51,728 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 [2018-07-25 14:14:51,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:14:52,377 WARN L169 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-07-25 14:14:53,368 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:14:53,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 14:14:53,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 14:14:53,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 14:14:53,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-25 14:14:53,370 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2018-07-25 14:14:53,521 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-07-25 14:14:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:14:53,889 INFO L93 Difference]: Finished difference Result 77 states and 127 transitions. [2018-07-25 14:14:53,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 14:14:53,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-07-25 14:14:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:14:53,893 INFO L225 Difference]: With dead ends: 77 [2018-07-25 14:14:53,893 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 14:14:53,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2801 GetRequests, 2773 SyntacticMatches, 16 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-07-25 14:14:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 14:14:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2018-07-25 14:14:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 14:14:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2018-07-25 14:14:53,915 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 22 [2018-07-25 14:14:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:14:53,915 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2018-07-25 14:14:53,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 14:14:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2018-07-25 14:14:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 14:14:53,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:14:53,917 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:14:53,917 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:14:53,917 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 [2018-07-25 14:14:53,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:14:56,149 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-07-25 14:14:56,417 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 14:14:57,206 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:14:57,372 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-25 14:14:57,830 WARN L169 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-25 14:14:58,238 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:01,720 WARN L169 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:02,035 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-25 14:15:02,717 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:03,352 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:03,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 14:15:03,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:15:03,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:15:03,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2018-07-25 14:15:03,354 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand 6 states. [2018-07-25 14:15:03,640 WARN L169 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:15:04,059 WARN L169 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:15:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:04,490 INFO L93 Difference]: Finished difference Result 86 states and 141 transitions. [2018-07-25 14:15:04,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 14:15:04,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-07-25 14:15:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:04,493 INFO L225 Difference]: With dead ends: 86 [2018-07-25 14:15:04,493 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 14:15:04,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9104 GetRequests, 9037 SyntacticMatches, 36 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 14:15:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 14:15:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 35. [2018-07-25 14:15:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 14:15:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2018-07-25 14:15:04,524 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 30 [2018-07-25 14:15:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:04,525 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2018-07-25 14:15:04,525 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:15:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2018-07-25 14:15:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 14:15:04,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:04,526 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:04,527 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:04,527 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 [2018-07-25 14:15:04,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:06,051 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-07-25 14:15:07,909 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-07-25 14:15:08,551 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-07-25 14:15:09,268 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-07-25 14:15:09,609 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-07-25 14:15:10,314 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-07-25 14:15:14,920 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-07-25 14:15:16,486 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:16,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 14:15:16,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:15:16,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:15:16,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2018-07-25 14:15:16,489 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 6 states. [2018-07-25 14:15:16,842 WARN L169 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-07-25 14:15:17,391 WARN L169 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-07-25 14:15:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:17,621 INFO L93 Difference]: Finished difference Result 100 states and 164 transitions. [2018-07-25 14:15:17,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 14:15:17,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-07-25 14:15:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:17,625 INFO L225 Difference]: With dead ends: 100 [2018-07-25 14:15:17,625 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 14:15:17,626 INFO L574 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 [2018-07-25 14:15:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 14:15:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2018-07-25 14:15:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 14:15:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 106 transitions. [2018-07-25 14:15:17,665 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 106 transitions. Word has length 31 [2018-07-25 14:15:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:17,665 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 106 transitions. [2018-07-25 14:15:17,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:15:17,666 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 106 transitions. [2018-07-25 14:15:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 14:15:17,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:17,667 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:17,667 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:17,668 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:15:17,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:17,821 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-07-25 14:15:19,633 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-07-25 14:15:19,942 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 14:15:20,676 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:20,835 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-25 14:15:21,602 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-07-25 14:15:22,011 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-25 14:15:22,447 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:22,924 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-25 14:15:26,371 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:26,809 WARN L169 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-25 14:15:27,706 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-07-25 14:15:27,944 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-07-25 14:15:28,462 WARN L169 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-07-25 14:15:28,866 WARN L169 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-25 14:15:29,874 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-07-25 14:15:30,137 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-07-25 14:15:30,487 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-07-25 14:15:31,201 WARN L169 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:15:31,943 WARN L169 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-07-25 14:15:33,478 WARN L169 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:15:36,906 WARN L169 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-07-25 14:15:37,371 WARN L169 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-07-25 14:15:39,022 WARN L169 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:15:41,482 WARN L169 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 14:15:49,619 WARN L169 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:15:50,311 WARN L169 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-07-25 14:15:53,365 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:15:54,035 WARN L169 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-07-25 14:15:54,561 WARN L169 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-07-25 14:16:21,133 WARN L169 SmtUtils]: Spent 26.28 s on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-07-25 14:16:21,782 WARN L169 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-07-25 14:16:24,922 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2018-07-25 14:16:25,609 WARN L169 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-25 14:16:26,219 WARN L169 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-07-25 14:16:27,101 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2018-07-25 14:16:27,883 WARN L169 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-07-25 14:16:32,054 WARN L169 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 14:16:32,932 WARN L169 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-07-25 14:16:33,392 WARN L169 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-25 14:16:34,220 WARN L169 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-07-25 14:16:38,211 WARN L169 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-07-25 14:16:38,792 WARN L169 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-07-25 14:16:47,132 WARN L169 SmtUtils]: Spent 7.96 s on a formula simplification that was a NOOP. DAG size: 111 [2018-07-25 14:16:48,103 WARN L169 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-07-25 14:16:49,447 WARN L169 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-07-25 14:16:54,148 WARN L169 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-07-25 14:16:55,297 WARN L169 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-07-25 14:17:29,667 WARN L169 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-07-25 14:17:30,903 WARN L169 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-07-25 14:17:32,246 WARN L169 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-07-25 14:17:39,979 WARN L169 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-07-25 14:17:41,159 WARN L169 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-07-25 14:17:49,078 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:17:49,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 14:17:49,079 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 14:17:49,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 14:17:49,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=5647, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 14:17:49,083 INFO L87 Difference]: Start difference. First operand 65 states and 106 transitions. Second operand 7 states. [2018-07-25 14:17:50,203 WARN L169 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 125 [2018-07-25 14:17:51,534 WARN L169 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 125 [2018-07-25 14:17:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:17:51,805 INFO L93 Difference]: Finished difference Result 89 states and 145 transitions. [2018-07-25 14:17:51,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 14:17:51,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-07-25 14:17:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:17:51,807 INFO L225 Difference]: With dead ends: 89 [2018-07-25 14:17:51,807 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 14:17:51,810 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53451 GetRequests, 53279 SyntacticMatches, 87 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=1600, Invalid=5882, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 14:17:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 14:17:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 14:17:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 14:17:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 14:17:51,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-07-25 14:17:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:17:51,811 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 14:17:51,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 14:17:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 14:17:51,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 14:17:51,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 14:17:52,257 WARN L169 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:52,490 WARN L169 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:52,697 WARN L169 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:52,964 WARN L169 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-07-25 14:17:53,290 WARN L169 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2018-07-25 14:17:53,532 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:53,860 WARN L169 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2018-07-25 14:17:54,096 WARN L169 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:54,332 WARN L169 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:17:54,575 WARN L169 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2018-07-25 14:18:00,619 WARN L169 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-07-25 14:18:16,897 WARN L169 SmtUtils]: Spent 16.27 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-07-25 14:18:31,228 WARN L169 SmtUtils]: Spent 14.33 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-07-25 14:18:33,300 WARN L169 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 113 [2018-07-25 14:18:36,763 WARN L169 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 152 DAG size of output: 127 [2018-07-25 14:18:40,283 WARN L169 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 161 DAG size of output: 126 [2018-07-25 14:18:43,660 WARN L169 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-07-25 14:18:49,653 WARN L169 SmtUtils]: Spent 5.99 s on a formula simplification. DAG size of input: 152 DAG size of output: 127 [2018-07-25 14:18:52,204 WARN L169 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2018-07-25 14:18:55,850 WARN L169 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 153 DAG size of output: 128 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown