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/toy/nonlinear/Power3-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:21:16,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:21:16,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:21:16,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:21:16,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:21:16,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:21:16,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:21:16,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:21:16,892 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:21:16,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:21:16,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:21:16,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:21:16,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:21:16,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:21:16,897 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:21:16,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:21:16,898 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:21:16,901 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:21:16,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:21:16,907 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:21:16,908 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:21:16,913 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:21:16,915 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 09:21:16,928 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:21:16,945 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:21:16,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:21:16,947 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:21:16,947 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:21:16,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:21:16,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:21:16,950 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:21:17,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:21:17,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:21:17,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:21:17,027 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:21:17,028 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:21:17,029 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power3-Safe.bpl [2018-09-26 09:21:17,029 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power3-Safe.bpl' [2018-09-26 09:21:17,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:21:17,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:21:17,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:21:17,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:21:17,092 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:21:17,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,133 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:21:17,134 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:21:17,134 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:21:17,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:21:17,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:21:17,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:21:17,138 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:21:17,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... [2018-09-26 09:21:17,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:21:17,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:21:17,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:21:17,164 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:21:17,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 09:21:17,243 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2018-09-26 09:21:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure power [2018-09-26 09:21:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2018-09-26 09:21:17,312 WARN L633 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-09-26 09:21:17,419 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:21:17,420 INFO L202 PluginConnector]: Adding new model Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:21:17 BoogieIcfgContainer [2018-09-26 09:21:17,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:21:17,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:21:17,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:21:17,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:21:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:21:17" (1/2) ... [2018-09-26 09:21:17,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26934584 and model type Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:21:17, skipping insertion in model container [2018-09-26 09:21:17,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:21:17" (2/2) ... [2018-09-26 09:21:17,428 INFO L112 eAbstractionObserver]: Analyzing ICFG Power3-Safe.bpl [2018-09-26 09:21:17,438 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:21:17,447 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:21:17,494 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:21:17,495 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:21:17,495 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:21:17,495 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:21:17,496 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:21:17,496 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:21:17,496 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:21:17,496 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:21:17,496 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:21:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-09-26 09:21:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 09:21:17,520 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:21:17,521 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 09:21:17,522 INFO L423 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-09-26 09:21:17,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:21:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash 39627, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:21:17,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:21:17,879 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:21:17,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:21:17,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 09:21:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 09:21:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:21:17,893 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-09-26 09:21:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:21:17,957 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-09-26 09:21:17,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 09:21:17,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-09-26 09:21:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:21:17,970 INFO L225 Difference]: With dead ends: 8 [2018-09-26 09:21:17,971 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 09:21:17,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:21:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 09:21:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 09:21:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 09:21:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 09:21:18,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 09:21:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:21:18,010 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 09:21:18,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 09:21:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 09:21:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:21:18,011 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:21:18,011 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:21:18,011 INFO L423 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-09-26 09:21:18,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:21:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1226462, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:21:18,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:21:18,576 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-09-26 09:21:19,963 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-26 09:21:52,709 WARN L178 SmtUtils]: Spent 32.58 s on a formula simplification that was a NOOP. DAG size: 52 [2018-09-26 09:23:11,590 WARN L178 SmtUtils]: Spent 1.31 m on a formula simplification that was a NOOP. DAG size: 60 [2018-09-26 09:23:11,859 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-09-26 09:24:49,925 WARN L178 SmtUtils]: Spent 1.63 m on a formula simplification that was a NOOP. DAG size: 68 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown