java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:45:15,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:45:15,636 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:45:15,648 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:45:15,649 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:45:15,650 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:45:15,651 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:45:15,653 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:45:15,654 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:45:15,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:45:15,656 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 08:45:15,656 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 08:45:15,657 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 08:45:15,658 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 08:45:15,659 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 08:45:15,660 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 08:45:15,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 08:45:15,663 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 08:45:15,665 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 08:45:15,669 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 08:45:15,670 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 08:45:15,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 08:45:15,676 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 08:45:15,676 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 08:45:15,677 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 08:45:15,678 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 08:45:15,680 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 08:45:15,681 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 08:45:15,681 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 08:45:15,682 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 08:45:15,682 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 08:45:15,683 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 08:45:15,683 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 08:45:15,683 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 08:45:15,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 08:45:15,685 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 08:45:15,685 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 08:45:15,693 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:45:15,694 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:45:15,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:45:15,695 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 08:45:15,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 08:45:15,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:45:15,696 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:45:15,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:45:15,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:45:15,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:45:15,766 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:45:15,766 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:45:15,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl [2018-09-26 08:45:15,767 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl' [2018-09-26 08:45:15,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:45:15,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:45:15,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:45:15,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:45:15,813 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:45:15,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:45:15,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:45:15,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:45:15,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:45:15,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... [2018-09-26 08:45:15,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:45:15,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:45:15,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:45:15,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:45:15,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 08:45:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:45:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:45:16,243 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:45:16,244 INFO L202 PluginConnector]: Adding new model count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:45:16 BoogieIcfgContainer [2018-09-26 08:45:16,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:45:16,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:45:16,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:45:16,250 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:45:16,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:45:15" (1/2) ... [2018-09-26 08:45:16,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc2e50b and model type count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:45:16, skipping insertion in model container [2018-09-26 08:45:16,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:45:16" (2/2) ... [2018-09-26 08:45:16,254 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down.i_3.bpl [2018-09-26 08:45:16,264 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:45:16,276 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:45:16,321 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:45:16,322 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:45:16,323 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:45:16,323 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 08:45:16,323 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:45:16,323 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:45:16,323 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:45:16,324 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:45:16,324 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:45:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 08:45:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:45:16,349 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:45:16,350 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:45:16,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:45:16,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:45:16,359 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:45:16,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:45:16,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:45:16,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:45:16,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 08:45:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 08:45:16,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:45:16,733 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 08:45:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:45:16,766 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 08:45:16,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 08:45:16,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 08:45:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:45:16,780 INFO L225 Difference]: With dead ends: 10 [2018-09-26 08:45:16,780 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 08:45:16,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:45:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 08:45:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 08:45:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 08:45:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 08:45:16,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 08:45:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:45:16,822 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 08:45:16,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 08:45:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 08:45:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 08:45:16,823 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:45:16,823 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 08:45:16,824 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:45:16,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:45:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:45:16,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:45:17,610 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-26 08:45:18,834 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-26 08:45:19,934 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-09-26 08:45:20,546 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-09-26 08:45:21,559 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-09-26 08:45:23,327 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-09-26 08:45:26,207 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 123 [2018-09-26 08:45:45,832 WARN L178 SmtUtils]: Spent 13.55 s on a formula simplification that was a NOOP. DAG size: 135 [2018-09-26 08:46:02,985 WARN L178 SmtUtils]: Spent 14.62 s on a formula simplification that was a NOOP. DAG size: 147 [2018-09-26 08:46:42,270 WARN L178 SmtUtils]: Spent 20.68 s on a formula simplification that was a NOOP. DAG size: 159 [2018-09-26 08:48:03,006 WARN L178 SmtUtils]: Spent 52.64 s on a formula simplification that was a NOOP. DAG size: 171 [2018-09-26 08:49:30,109 WARN L178 SmtUtils]: Spent 35.56 s on a formula simplification that was a NOOP. DAG size: 183 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown