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_3_alt.BV.c.cil.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:15:10,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:15:10,264 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:15:10,276 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:15:10,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:15:10,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:15:10,279 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:15:10,281 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:15:10,284 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:15:10,285 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:15:10,286 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:15:10,292 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:15:10,293 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:15:10,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:15:10,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:15:10,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:15:10,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:15:10,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:15:10,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:15:10,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:15:10,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:15:10,309 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:15:10,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:15:10,311 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:15:10,312 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:15:10,313 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:15:10,314 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:15:10,314 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:15:10,315 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:15:10,317 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:15:10,318 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:15:10,321 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:15:10,321 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:15:10,321 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:15:10,322 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:15:10,323 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:15:10,325 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 14:15:10,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:15:10,340 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:15:10,342 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:15:10,342 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:15:10,342 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:15:10,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:15:10,343 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:15:10,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:15:10,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:15:10,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:15:10,419 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:15:10,419 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:15:10,420 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3_alt.BV.c.cil.c_19.bpl [2018-07-25 14:15:10,421 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3_alt.BV.c.cil.c_19.bpl' [2018-07-25 14:15:10,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:15:10,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:15:10,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:15:10,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:15:10,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:15:10,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:15:10,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:15:10,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:15:10,610 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:15:10,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/1) ... [2018-07-25 14:15:10,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:15:10,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:15:10,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:15:10,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:15:10,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (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 14:15:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:15:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:15:11,470 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:15:11,470 INFO L202 PluginConnector]: Adding new model s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:15:11 BoogieIcfgContainer [2018-07-25 14:15:11,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:15:11,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:15:11,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:15:11,475 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:15:11,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:10" (1/2) ... [2018-07-25 14:15:11,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3bb26 and model type s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:15:11, skipping insertion in model container [2018-07-25 14:15:11,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:15:11" (2/2) ... [2018-07-25 14:15:11,478 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3_alt.BV.c.cil.c_19.bpl [2018-07-25 14:15:11,488 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:15:11,497 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:15:11,543 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:15:11,544 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:15:11,544 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:15:11,544 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:15:11,545 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:15:11,545 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:15:11,545 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:15:11,545 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:15:11,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:15:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-25 14:15:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 14:15:11,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:11,571 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:11,572 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -505433715, 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 14:15:11,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:11,909 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-07-25 14:15:12,831 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:12,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 14:15:12,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 14:15:12,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 14:15:12,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 14:15:12,849 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-07-25 14:15:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:13,148 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2018-07-25 14:15:13,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 14:15:13,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-25 14:15:13,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:13,166 INFO L225 Difference]: With dead ends: 47 [2018-07-25 14:15:13,166 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 14:15:13,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 839 SyntacticMatches, 11 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 14:15:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 14:15:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 14:15:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 14:15:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 14:15:13,216 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 15 [2018-07-25 14:15:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:13,217 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 14:15:13,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 14:15:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 14:15:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 14:15:13,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:13,219 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:13,220 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 339867556, 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 14:15:13,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:14,074 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-25 14:15:14,407 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-25 14:15:15,221 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:15,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 14:15:15,223 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:15:15,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:15:15,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 14:15:15,224 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 14:15:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:15,605 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2018-07-25 14:15:15,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 14:15:15,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-07-25 14:15:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:15,607 INFO L225 Difference]: With dead ends: 60 [2018-07-25 14:15:15,607 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 14:15:15,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3162 GetRequests, 3135 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 14:15:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 14:15:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-07-25 14:15:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 14:15:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 14:15:15,621 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 35 [2018-07-25 14:15:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:15,622 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 14:15:15,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:15:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 14:15:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 14:15:15,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:15,623 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:15,624 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1742811638, 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 14:15:15,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:19,713 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-07-25 14:15:20,305 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:20,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 14:15:20,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:15:20,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:15:20,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-25 14:15:20,308 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 14:15:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:21,100 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2018-07-25 14:15:21,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 14:15:21,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 14:15:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:21,103 INFO L225 Difference]: With dead ends: 98 [2018-07-25 14:15:21,106 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 14:15:21,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14493 GetRequests, 14446 SyntacticMatches, 32 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-25 14:15:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 14:15:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2018-07-25 14:15:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 14:15:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 159 transitions. [2018-07-25 14:15:21,160 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 159 transitions. Word has length 40 [2018-07-25 14:15:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:21,160 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 159 transitions. [2018-07-25 14:15:21,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:15:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2018-07-25 14:15:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 14:15:21,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:21,166 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:21,166 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1365477056, 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 14:15:21,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:21,989 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-25 14:15:25,329 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:15:28,556 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:15:29,557 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:15:35,846 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:15:37,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:37,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 14:15:37,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 14:15:37,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 14:15:37,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2018-07-25 14:15:37,989 INFO L87 Difference]: Start difference. First operand 89 states and 159 transitions. Second operand 7 states. [2018-07-25 14:15:38,204 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-07-25 14:15:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:39,586 INFO L93 Difference]: Finished difference Result 134 states and 238 transitions. [2018-07-25 14:15:39,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 14:15:39,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-07-25 14:15:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:39,591 INFO L225 Difference]: With dead ends: 134 [2018-07-25 14:15:39,591 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 14:15:39,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33574 GetRequests, 33494 SyntacticMatches, 50 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2018-07-25 14:15:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 14:15:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2018-07-25 14:15:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 14:15:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 145 transitions. [2018-07-25 14:15:39,613 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 145 transitions. Word has length 48 [2018-07-25 14:15:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:39,614 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 145 transitions. [2018-07-25 14:15:39,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 14:15:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 145 transitions. [2018-07-25 14:15:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 14:15:39,616 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:39,616 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:39,616 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1043959706, 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 14:15:39,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:43,933 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:15:49,448 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:15:51,007 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:51,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 14:15:51,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 14:15:51,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 14:15:51,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-25 14:15:51,009 INFO L87 Difference]: Start difference. First operand 81 states and 145 transitions. Second operand 7 states. [2018-07-25 14:15:51,250 WARN L169 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 14:15:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:52,200 INFO L93 Difference]: Finished difference Result 185 states and 332 transitions. [2018-07-25 14:15:52,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 14:15:52,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-07-25 14:15:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:52,203 INFO L225 Difference]: With dead ends: 185 [2018-07-25 14:15:52,203 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 14:15:52,204 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30237 GetRequests, 30176 SyntacticMatches, 41 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-25 14:15:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 14:15:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 14:15:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 14:15:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 313 transitions. [2018-07-25 14:15:52,262 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 313 transitions. Word has length 51 [2018-07-25 14:15:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:52,263 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 313 transitions. [2018-07-25 14:15:52,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 14:15:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 313 transitions. [2018-07-25 14:15:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 14:15:52,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:52,265 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:15:52,266 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1888216740, 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 14:15:52,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:55,801 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:15:59,401 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:16:00,524 WARN L169 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:16:01,006 WARN L169 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:16:03,957 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 14:16:08,658 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:16:13,616 WARN L169 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 14:16:16,212 WARN L169 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 14:16:33,161 WARN L169 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 14:16:39,267 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:16:39,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 14:16:39,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 14:16:39,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 14:16:39,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 14:16:39,269 INFO L87 Difference]: Start difference. First operand 173 states and 313 transitions. Second operand 8 states. [2018-07-25 14:16:40,299 WARN L169 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-07-25 14:16:41,069 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 14:16:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:16:41,512 INFO L93 Difference]: Finished difference Result 261 states and 470 transitions. [2018-07-25 14:16:41,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 14:16:41,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-25 14:16:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:16:41,515 INFO L225 Difference]: With dead ends: 261 [2018-07-25 14:16:41,516 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 14:16:41,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67672 GetRequests, 67566 SyntacticMatches, 65 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=489, Invalid=1317, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 14:16:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 14:16:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 128. [2018-07-25 14:16:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 14:16:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 231 transitions. [2018-07-25 14:16:41,561 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 231 transitions. Word has length 59 [2018-07-25 14:16:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:16:41,562 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 231 transitions. [2018-07-25 14:16:41,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 14:16:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 231 transitions. [2018-07-25 14:16:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 14:16:41,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:16:41,564 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:16:41,564 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:16:41,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1864752022, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:16:41,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:16:46,053 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:16:52,076 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:16:53,106 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-07-25 14:16:53,484 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 14:17:04,437 WARN L169 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 14:17:07,822 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:17:07,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 14:17:07,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 14:17:07,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 14:17:07,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-07-25 14:17:07,824 INFO L87 Difference]: Start difference. First operand 128 states and 231 transitions. Second operand 8 states. [2018-07-25 14:17:08,178 WARN L169 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-07-25 14:17:08,524 WARN L169 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 14:17:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:17:09,525 INFO L93 Difference]: Finished difference Result 268 states and 484 transitions. [2018-07-25 14:17:09,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 14:17:09,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-07-25 14:17:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:17:09,528 INFO L225 Difference]: With dead ends: 268 [2018-07-25 14:17:09,528 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 14:17:09,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53211 GetRequests, 53137 SyntacticMatches, 49 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-07-25 14:17:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 14:17:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2018-07-25 14:17:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 14:17:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 457 transitions. [2018-07-25 14:17:09,611 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 457 transitions. Word has length 61 [2018-07-25 14:17:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:17:09,611 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 457 transitions. [2018-07-25 14:17:09,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 14:17:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 457 transitions. [2018-07-25 14:17:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 14:17:09,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:17:09,614 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:17:09,614 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:17:09,614 INFO L82 PathProgramCache]: Analyzing trace with hash -240826100, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:17:09,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:17:13,249 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:17:17,185 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 14:17:18,311 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:17:18,634 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:17:21,858 WARN L169 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 14:17:26,968 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 14:17:32,449 WARN L169 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 14:17:34,498 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-07-25 14:17:35,159 WARN L169 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-25 14:17:35,423 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 14:17:35,958 WARN L169 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 14:17:41,104 WARN L169 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-07-25 14:17:56,214 WARN L169 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 14:18:04,468 WARN L169 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-07-25 14:18:09,503 WARN L169 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 14:18:44,329 WARN L169 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 14:18:56,338 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:18:56,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 14:18:56,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 14:18:56,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 14:18:56,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 14:18:56,340 INFO L87 Difference]: Start difference. First operand 252 states and 457 transitions. Second operand 9 states. [2018-07-25 14:18:58,903 WARN L169 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2018-07-25 14:18:59,316 WARN L169 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 14:18:59,841 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-07-25 14:19:00,225 WARN L169 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-07-25 14:19:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:19:01,023 INFO L93 Difference]: Finished difference Result 406 states and 735 transitions. [2018-07-25 14:19:01,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 14:19:01,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-25 14:19:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:19:01,027 INFO L225 Difference]: With dead ends: 406 [2018-07-25 14:19:01,027 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 14:19:01,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117074 GetRequests, 116945 SyntacticMatches, 79 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 14:19:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 14:19:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 185. [2018-07-25 14:19:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 14:19:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 335 transitions. [2018-07-25 14:19:01,103 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 335 transitions. Word has length 69 [2018-07-25 14:19:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:19:01,103 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 335 transitions. [2018-07-25 14:19:01,103 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 14:19:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 335 transitions. [2018-07-25 14:19:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 14:19:01,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:19:01,105 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:19:01,105 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:19:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2078757420, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:19:01,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:19:01,670 WARN L169 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-25 14:19:02,159 WARN L169 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 14:19:06,567 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:19:12,794 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 14:19:14,154 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 14:19:25,895 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 14:19:27,892 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-07-25 14:19:28,423 WARN L169 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 14:19:46,910 WARN L169 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 97 Received shutdown request... [2018-07-25 14:19:52,500 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:19:52,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 14:19:52,500 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 14:19:52,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 14:19:52,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2018-07-25 14:19:52,501 INFO L87 Difference]: Start difference. First operand 185 states and 335 transitions. Second operand 9 states. [2018-07-25 14:19:52,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-25 14:19:52,502 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 14:19:52,508 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 14:19:52,508 INFO L202 PluginConnector]: Adding new model s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 02:19:52 BoogieIcfgContainer [2018-07-25 14:19:52,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 14:19:52,509 INFO L168 Benchmark]: Toolchain (without parser) took 281963.84 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -129.5 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 12.5 kB. Max. memory is 7.1 GB. [2018-07-25 14:19:52,510 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:52,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:52,511 INFO L168 Benchmark]: Boogie Preprocessor took 62.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:52,511 INFO L168 Benchmark]: RCFGBuilder took 797.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 14:19:52,512 INFO L168 Benchmark]: TraceAbstraction took 281036.72 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -129.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:52,515 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 797.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 281036.72 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -129.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 484]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 484). Cancelled while BasicCegarLoop was constructing difference of abstraction (185states) and interpolant automaton (currently 2 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. TIMEOUT Result, 280.9s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 12.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 979 SDslu, 30 SDs, 0 SdLazy, 817 SolverSat, 1030 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403809 GetRequests, 403188 SyntacticMatches, 400 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 40.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 267.1s PdrRuntime, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3_alt.BV.c.cil.c_19.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-19-52-527.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3_alt.BV.c.cil.c_19.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_14-19-52-527.csv Completed graceful shutdown