java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/reals/toyExample.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:30:07,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:30:07,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:30:07,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:30:07,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:30:07,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:30:07,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:30:07,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:30:07,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:30:07,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:30:07,900 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:30:07,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:30:07,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:30:07,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:30:07,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:30:07,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:30:07,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:30:07,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:30:07,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:30:07,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:30:07,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:30:07,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:30:07,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:30:07,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:30:07,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:30:07,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:30:07,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:30:07,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:30:07,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:30:08,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:30:08,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:30:08,013 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:30:08,013 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:30:08,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/reals/toyExample.bpl [2019-08-05 10:30:08,014 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/reals/toyExample.bpl' [2019-08-05 10:30:08,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:30:08,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:30:08,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:30:08,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:30:08,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:30:08,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,148 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:30:08,149 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:30:08,149 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:30:08,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:30:08,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:30:08,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:30:08,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:30:08,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/1) ... [2019-08-05 10:30:08,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:30:08,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:30:08,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:30:08,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:30:08,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (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 [2019-08-05 10:30:08,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure nav01Example given in one single declaration [2019-08-05 10:30:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure nav01Example [2019-08-05 10:30:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure nav01Example [2019-08-05 10:30:09,050 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:30:09,051 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:30:09,052 INFO L202 PluginConnector]: Adding new model toyExample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:30:09 BoogieIcfgContainer [2019-08-05 10:30:09,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:30:09,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:30:09,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:30:09,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:30:09,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "toyExample.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:30:08" (1/2) ... [2019-08-05 10:30:09,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d097c and model type toyExample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:30:09, skipping insertion in model container [2019-08-05 10:30:09,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "toyExample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:30:09" (2/2) ... [2019-08-05 10:30:09,060 INFO L109 eAbstractionObserver]: Analyzing ICFG toyExample.bpl [2019-08-05 10:30:09,070 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:30:09,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:30:09,097 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:30:09,123 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:30:09,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:30:09,124 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:30:09,125 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:30:09,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:30:09,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:30:09,125 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:30:09,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:30:09,126 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:30:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-08-05 10:30:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:30:09,147 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:09,148 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:30:09,151 INFO L418 AbstractCegarLoop]: === Iteration 1 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:09,157 INFO L82 PathProgramCache]: Analyzing trace with hash 925962, now seen corresponding path program 1 times [2019-08-05 10:30:09,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:09,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:30:09,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:09,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:09,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:30:09,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:30:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:30:09,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:30:09,337 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2019-08-05 10:30:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:09,717 INFO L93 Difference]: Finished difference Result 43 states and 76 transitions. [2019-08-05 10:30:09,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:30:09,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 10:30:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:09,733 INFO L225 Difference]: With dead ends: 43 [2019-08-05 10:30:09,733 INFO L226 Difference]: Without dead ends: 40 [2019-08-05 10:30:09,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:30:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-08-05 10:30:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-08-05 10:30:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-08-05 10:30:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 69 transitions. [2019-08-05 10:30:09,766 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 69 transitions. Word has length 4 [2019-08-05 10:30:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:09,767 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 69 transitions. [2019-08-05 10:30:09,767 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:30:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 69 transitions. [2019-08-05 10:30:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-08-05 10:30:09,768 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:09,768 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:30:09,768 INFO L418 AbstractCegarLoop]: === Iteration 2 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash 384294766, now seen corresponding path program 1 times [2019-08-05 10:30:09,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:09,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:30:09,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:09,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:09,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:30:09,909 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:30:09,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:30:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:30:09,910 INFO L87 Difference]: Start difference. First operand 39 states and 69 transitions. Second operand 4 states. [2019-08-05 10:30:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:10,132 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2019-08-05 10:30:10,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:30:10,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-08-05 10:30:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:10,135 INFO L225 Difference]: With dead ends: 41 [2019-08-05 10:30:10,135 INFO L226 Difference]: Without dead ends: 40 [2019-08-05 10:30:10,136 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:30:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-08-05 10:30:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-08-05 10:30:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-08-05 10:30:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 64 transitions. [2019-08-05 10:30:10,142 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 64 transitions. Word has length 12 [2019-08-05 10:30:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:10,143 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 64 transitions. [2019-08-05 10:30:10,143 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:30:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2019-08-05 10:30:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-08-05 10:30:10,144 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:10,144 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:30:10,145 INFO L418 AbstractCegarLoop]: === Iteration 3 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:10,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1570544299, now seen corresponding path program 1 times [2019-08-05 10:30:10,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:10,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:30:10,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:10,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:10,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:30:10,332 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:30:10,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:30:10,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:30:10,333 INFO L87 Difference]: Start difference. First operand 39 states and 64 transitions. Second operand 4 states. [2019-08-05 10:30:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:10,642 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2019-08-05 10:30:10,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:30:10,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-08-05 10:30:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:10,645 INFO L225 Difference]: With dead ends: 41 [2019-08-05 10:30:10,646 INFO L226 Difference]: Without dead ends: 40 [2019-08-05 10:30:10,647 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:30:10,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-08-05 10:30:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-08-05 10:30:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-08-05 10:30:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2019-08-05 10:30:10,653 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 22 [2019-08-05 10:30:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:10,653 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2019-08-05 10:30:10,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:30:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2019-08-05 10:30:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-08-05 10:30:10,654 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:30:10,655 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:30:10,655 INFO L418 AbstractCegarLoop]: === Iteration 4 === [nav01ExampleErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:30:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:30:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2060679951, now seen corresponding path program 1 times [2019-08-05 10:30:10,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:30:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:30:10,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:30:10,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:30:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:30:10,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:30:10,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:30:10,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:30:10,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:30:10,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:30:10,789 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 4 states. [2019-08-05 10:30:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:30:11,293 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2019-08-05 10:30:11,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:30:11,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-08-05 10:30:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:30:11,294 INFO L225 Difference]: With dead ends: 38 [2019-08-05 10:30:11,294 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:30:11,294 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:30:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:30:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:30:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:30:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:30:11,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-08-05 10:30:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:30:11,298 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:30:11,298 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:30:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:30:11,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:30:11,304 INFO L202 PluginConnector]: Adding new model toyExample.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:30:11 BoogieIcfgContainer [2019-08-05 10:30:11,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:30:11,308 INFO L168 Benchmark]: Toolchain (without parser) took 3204.58 ms. Allocated memory was 140.5 MB in the beginning and 177.2 MB in the end (delta: 36.7 MB). Free memory was 108.4 MB in the beginning and 78.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 67.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,311 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 111.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 106.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,314 INFO L168 Benchmark]: Boogie Preprocessor took 41.47 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 104.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,315 INFO L168 Benchmark]: RCFGBuilder took 858.30 ms. Allocated memory is still 140.5 MB. Free memory was 104.5 MB in the beginning and 78.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,317 INFO L168 Benchmark]: TraceAbstraction took 2251.46 ms. Allocated memory was 140.5 MB in the beginning and 177.2 MB in the end (delta: 36.7 MB). Free memory was 77.9 MB in the beginning and 78.0 MB in the end (delta: -151.1 kB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:30:11,324 INFO L335 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 140.5 MB. Free memory was 111.2 MB in the beginning and 111.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 106.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.47 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 104.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 858.30 ms. Allocated memory is still 140.5 MB. Free memory was 104.5 MB in the beginning and 78.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2251.46 ms. Allocated memory was 140.5 MB in the beginning and 177.2 MB in the end (delta: 36.7 MB). Free memory was 77.9 MB in the beginning and 78.0 MB in the end (delta: -151.1 kB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 800]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 187 SDslu, 82 SDs, 0 SdLazy, 199 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 4236 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1030 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...