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.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3.cil.c_20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 09:35:12,625 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 09:35:12,627 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 09:35:12,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 09:35:12,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 09:35:12,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 09:35:12,645 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 09:35:12,647 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 09:35:12,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 09:35:12,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 09:35:12,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 09:35:12,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 09:35:12,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 09:35:12,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 09:35:12,661 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 09:35:12,661 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 09:35:12,662 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 09:35:12,664 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 09:35:12,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 09:35:12,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 09:35:12,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 09:35:12,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 09:35:12,684 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 09:35:12,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 09:35:12,688 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 09:35:12,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 09:35:12,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 09:35:12,691 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 09:35:12,692 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 09:35:12,694 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 09:35:12,694 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 09:35:12,694 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 09:35:12,701 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf [2018-07-25 09:35:12,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 09:35:12,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 09:35:12,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 09:35:12,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 09:35:12,720 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 09:35:12,721 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 09:35:12,795 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 09:35:12,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 09:35:12,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 09:35:12,821 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 09:35:12,822 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 09:35:12,822 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3.cil.c_20.bpl [2018-07-25 09:35:12,823 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3.cil.c_20.bpl' [2018-07-25 09:35:12,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 09:35:12,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 09:35:12,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:12,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 09:35:12,922 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 09:35:12,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:12,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:12,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:12,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 09:35:12,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 09:35:12,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 09:35:13,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/1) ... [2018-07-25 09:35:13,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 09:35:13,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 09:35:13,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 09:35:13,057 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 09:35:13,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (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 09:35:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 09:35:13,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 09:35:13,913 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 09:35:13,914 INFO L202 PluginConnector]: Adding new model s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:13 BoogieIcfgContainer [2018-07-25 09:35:13,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 09:35:13,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 09:35:13,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 09:35:13,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 09:35:13,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:12" (1/2) ... [2018-07-25 09:35:13,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c367aa7 and model type s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 09:35:13, skipping insertion in model container [2018-07-25 09:35:13,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:13" (2/2) ... [2018-07-25 09:35:13,922 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.cil.c_20.bpl [2018-07-25 09:35:13,933 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 09:35:13,943 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 09:35:13,985 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 09:35:13,986 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 09:35:13,986 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 09:35:13,986 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 09:35:13,986 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 09:35:13,987 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 09:35:13,987 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 09:35:13,987 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 09:35:13,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 09:35:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-25 09:35:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 09:35:14,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:14,014 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:14,015 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash -505433777, now seen corresponding path program 1 times [2018-07-25 09:35:14,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:15,358 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:15,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 09:35:15,364 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 09:35:15,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 09:35:15,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:15,375 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-07-25 09:35:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:15,842 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2018-07-25 09:35:15,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 09:35:15,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-25 09:35:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:15,880 INFO L225 Difference]: With dead ends: 47 [2018-07-25 09:35:15,884 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 09:35:15,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 839 SyntacticMatches, 11 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 09:35:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 09:35:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:15,951 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 15 [2018-07-25 09:35:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:15,954 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:15,955 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 09:35:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 09:35:15,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:15,958 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 09:35:15,960 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:15,960 INFO L82 PathProgramCache]: Analyzing trace with hash 339867494, now seen corresponding path program 1 times [2018-07-25 09:35:15,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:17,348 WARN L169 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-25 09:35:18,145 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:18,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:18,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:18,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:18,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:18,149 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:18,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:18,559 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2018-07-25 09:35:18,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 09:35:18,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-07-25 09:35:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:18,564 INFO L225 Difference]: With dead ends: 60 [2018-07-25 09:35:18,564 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 09:35:18,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3162 GetRequests, 3135 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 09:35:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-07-25 09:35:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:18,578 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 35 [2018-07-25 09:35:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:18,579 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:18,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 09:35:18,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:18,581 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 09:35:18,581 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1742811576, now seen corresponding path program 1 times [2018-07-25 09:35:18,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:20,270 WARN L169 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 09:35:23,665 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:23,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:23,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:23,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:23,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-25 09:35:23,668 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:24,380 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2018-07-25 09:35:24,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 09:35:24,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 09:35:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:24,382 INFO L225 Difference]: With dead ends: 98 [2018-07-25 09:35:24,382 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 09:35:24,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14493 GetRequests, 14446 SyntacticMatches, 32 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-25 09:35:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 09:35:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2018-07-25 09:35:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 09:35:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 159 transitions. [2018-07-25 09:35:24,411 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 159 transitions. Word has length 40 [2018-07-25 09:35:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:24,411 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 159 transitions. [2018-07-25 09:35:24,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2018-07-25 09:35:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 09:35:24,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:24,414 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 09:35:24,414 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1365476994, now seen corresponding path program 1 times [2018-07-25 09:35:24,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:28,271 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:35:31,559 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:35:32,468 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:35:38,424 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:35:40,515 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:40,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:40,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:40,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:40,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2018-07-25 09:35:40,517 INFO L87 Difference]: Start difference. First operand 89 states and 159 transitions. Second operand 7 states. [2018-07-25 09:35:40,728 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-07-25 09:35:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:41,858 INFO L93 Difference]: Finished difference Result 134 states and 238 transitions. [2018-07-25 09:35:41,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:41,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-07-25 09:35:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:41,861 INFO L225 Difference]: With dead ends: 134 [2018-07-25 09:35:41,862 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 09:35:41,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33574 GetRequests, 33494 SyntacticMatches, 50 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2018-07-25 09:35:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 09:35:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2018-07-25 09:35:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 09:35:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 145 transitions. [2018-07-25 09:35:41,884 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 145 transitions. Word has length 48 [2018-07-25 09:35:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:41,885 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 145 transitions. [2018-07-25 09:35:41,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 145 transitions. [2018-07-25 09:35:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 09:35:41,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:41,887 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 09:35:41,887 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1043959768, now seen corresponding path program 1 times [2018-07-25 09:35:41,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:50,501 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:35:51,918 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:51,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:51,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:51,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:51,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-25 09:35:51,920 INFO L87 Difference]: Start difference. First operand 81 states and 145 transitions. Second operand 7 states. [2018-07-25 09:35:52,102 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-07-25 09:35:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:52,814 INFO L93 Difference]: Finished difference Result 185 states and 332 transitions. [2018-07-25 09:35:52,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:52,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-07-25 09:35:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:52,818 INFO L225 Difference]: With dead ends: 185 [2018-07-25 09:35:52,818 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 09:35:52,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30237 GetRequests, 30176 SyntacticMatches, 41 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-25 09:35:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 09:35:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 09:35:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 09:35:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 313 transitions. [2018-07-25 09:35:52,878 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 313 transitions. Word has length 51 [2018-07-25 09:35:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:52,879 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 313 transitions. [2018-07-25 09:35:52,879 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 313 transitions. [2018-07-25 09:35:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 09:35:52,881 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:52,881 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 09:35:52,882 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1888216802, now seen corresponding path program 1 times [2018-07-25 09:35:52,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:36:00,072 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:36:01,304 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:36:04,059 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:36:08,795 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:36:13,211 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:36:15,386 WARN L169 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-07-25 09:36:29,632 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-07-25 09:36:34,572 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:36:34,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:36:34,573 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:36:34,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:36:34,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1087, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 09:36:34,575 INFO L87 Difference]: Start difference. First operand 173 states and 313 transitions. Second operand 8 states. [2018-07-25 09:36:34,971 WARN L169 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-07-25 09:36:35,595 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-07-25 09:36:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:36:35,930 INFO L93 Difference]: Finished difference Result 261 states and 470 transitions. [2018-07-25 09:36:35,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:36:35,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-25 09:36:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:36:35,934 INFO L225 Difference]: With dead ends: 261 [2018-07-25 09:36:35,934 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 09:36:35,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67672 GetRequests, 67567 SyntacticMatches, 65 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=467, Invalid=1255, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 09:36:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 09:36:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 128. [2018-07-25 09:36:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 09:36:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 231 transitions. [2018-07-25 09:36:35,979 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 231 transitions. Word has length 59 [2018-07-25 09:36:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:36:35,979 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 231 transitions. [2018-07-25 09:36:35,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:36:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 231 transitions. [2018-07-25 09:36:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 09:36:35,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:36:35,982 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 09:36:35,982 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:36:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1864751960, now seen corresponding path program 1 times [2018-07-25 09:36:35,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:36:40,185 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:36:45,251 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:36:46,359 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:36:55,767 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:36:58,580 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:36:58,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:36:58,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:36:58,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:36:58,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-07-25 09:36:58,583 INFO L87 Difference]: Start difference. First operand 128 states and 231 transitions. Second operand 8 states. [2018-07-25 09:36:58,860 WARN L169 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-07-25 09:36:59,115 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-07-25 09:36:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:36:59,920 INFO L93 Difference]: Finished difference Result 268 states and 484 transitions. [2018-07-25 09:36:59,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:36:59,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-07-25 09:36:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:36:59,923 INFO L225 Difference]: With dead ends: 268 [2018-07-25 09:36:59,923 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 09:36:59,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53211 GetRequests, 53137 SyntacticMatches, 49 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-07-25 09:36:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 09:37:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2018-07-25 09:37:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 09:37:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 457 transitions. [2018-07-25 09:37:00,013 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 457 transitions. Word has length 61 [2018-07-25 09:37:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:37:00,013 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 457 transitions. [2018-07-25 09:37:00,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:37:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 457 transitions. [2018-07-25 09:37:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 09:37:00,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:37:00,016 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 09:37:00,016 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:37:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash -240826162, now seen corresponding path program 1 times [2018-07-25 09:37:00,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:37:03,648 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:37:07,868 WARN L169 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:37:09,012 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:37:09,308 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:37:12,229 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:37:16,942 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:37:21,927 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:37:24,334 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:37:25,004 WARN L169 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 09:37:25,292 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-07-25 09:37:30,101 WARN L169 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-07-25 09:37:43,851 WARN L169 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-07-25 09:37:51,700 WARN L169 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-07-25 09:37:56,128 WARN L169 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:38:26,447 WARN L169 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:38:36,802 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:38:36,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:38:36,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:38:36,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:38:36,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 09:38:36,805 INFO L87 Difference]: Start difference. First operand 252 states and 457 transitions. Second operand 9 states. [2018-07-25 09:38:37,336 WARN L169 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2018-07-25 09:38:37,610 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-07-25 09:38:38,210 WARN L169 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-07-25 09:38:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:38:38,784 INFO L93 Difference]: Finished difference Result 406 states and 735 transitions. [2018-07-25 09:38:38,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:38:38,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-25 09:38:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:38:38,788 INFO L225 Difference]: With dead ends: 406 [2018-07-25 09:38:38,788 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 09:38:38,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117074 GetRequests, 116945 SyntacticMatches, 79 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 09:38:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 09:38:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 185. [2018-07-25 09:38:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 09:38:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 335 transitions. [2018-07-25 09:38:38,848 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 335 transitions. Word has length 69 [2018-07-25 09:38:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:38:38,848 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 335 transitions. [2018-07-25 09:38:38,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:38:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 335 transitions. [2018-07-25 09:38:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 09:38:38,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:38:38,850 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 09:38:38,850 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:38:38,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2078757358, now seen corresponding path program 1 times [2018-07-25 09:38:38,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:38:40,283 WARN L169 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 09:38:43,707 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:38:49,547 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:38:50,717 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:39:00,554 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:39:02,150 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-07-25 09:39:02,560 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:17,478 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:21,905 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:39:21,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:39:21,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:39:21,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:39:21,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2018-07-25 09:39:21,907 INFO L87 Difference]: Start difference. First operand 185 states and 335 transitions. Second operand 9 states. [2018-07-25 09:39:22,279 WARN L169 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-07-25 09:39:22,659 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-07-25 09:39:23,248 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-07-25 09:39:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:39:23,440 INFO L93 Difference]: Finished difference Result 353 states and 640 transitions. [2018-07-25 09:39:23,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:39:23,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-07-25 09:39:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:39:23,444 INFO L225 Difference]: With dead ends: 353 [2018-07-25 09:39:23,445 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 09:39:23,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83536 GetRequests, 83450 SyntacticMatches, 56 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 09:39:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 09:39:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2018-07-25 09:39:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 09:39:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 601 transitions. [2018-07-25 09:39:23,558 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 601 transitions. Word has length 70 [2018-07-25 09:39:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:39:23,559 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 601 transitions. [2018-07-25 09:39:23,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:39:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 601 transitions. [2018-07-25 09:39:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 09:39:23,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:39:23,561 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:39:23,561 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:39:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash 927770936, now seen corresponding path program 1 times [2018-07-25 09:39:23,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:39:24,355 WARN L169 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-07-25 09:39:26,625 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 09:39:27,887 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:39:31,890 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-25 09:39:33,082 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:39:33,383 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:39:36,461 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:39:41,187 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:39:45,903 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-07-25 09:39:48,142 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-07-25 09:39:48,595 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 68 Received shutdown request... [2018-07-25 09:39:52,461 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:39:52,465 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:39:52,466 INFO L202 PluginConnector]: Adding new model s3_srvr_3.cil.c_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:39:52 BoogieIcfgContainer [2018-07-25 09:39:52,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:39:52,467 INFO L168 Benchmark]: Toolchain (without parser) took 279547.64 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -11.5 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -5.6 MB). Peak memory consumption was 575.5 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:52,468 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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 09:39:52,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.98 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 09:39:52,469 INFO L168 Benchmark]: Boogie Preprocessor took 69.94 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 09:39:52,470 INFO L168 Benchmark]: RCFGBuilder took 857.49 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 09:39:52,471 INFO L168 Benchmark]: TraceAbstraction took 278551.27 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -11.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -47.9 MB). Peak memory consumption was 533.2 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:52,474 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 0.20 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 63.98 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 69.94 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 857.49 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 278551.27 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -11.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -47.9 MB). Peak memory consumption was 533.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 506]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 506). Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 7, while Pdr was Timeout or canceled while running Pdr. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. TIMEOUT Result, 278.4s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 10.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 1122 SDslu, 37 SDs, 0 SdLazy, 1006 SolverSat, 1113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403813 GetRequests, 403189 SyntacticMatches, 400 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8336 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=331occurred in iteration=9, 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: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 466 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 238.8s 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.cil.c_20.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-39-52-486.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3.cil.c_20.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-39-52-486.csv Completed graceful shutdown