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/regression/bpl/TestSequentialComposition.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:08:34,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:08:34,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:08:34,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-08-05 11:08:34,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:08:34,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:08:34,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:08:34,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:08:34,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:08:34,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:08:34,919 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:08:34,919 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:08:34,921 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/TestSequentialComposition.bpl [2019-08-05 11:08:34,921 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/TestSequentialComposition.bpl' [2019-08-05 11:08:34,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:08:34,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:08:34,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:08:34,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:08:34,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:08:34,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:34,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,001 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:08:35,002 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:08:35,002 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:08:35,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:08:35,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:08:35,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:08:35,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:08:35,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/1) ... [2019-08-05 11:08:35,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:08:35,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:08:35,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:08:35,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:08:35,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (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 11:08:35,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure proc given in one single declaration [2019-08-05 11:08:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2019-08-05 11:08:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2019-08-05 11:08:35,629 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:08:35,630 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-08-05 11:08:35,631 INFO L202 PluginConnector]: Adding new model TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:08:35 BoogieIcfgContainer [2019-08-05 11:08:35,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:08:35,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:08:35,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:08:35,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:08:35,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:34" (1/2) ... [2019-08-05 11:08:35,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea39e2e and model type TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:08:35, skipping insertion in model container [2019-08-05 11:08:35,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:08:35" (2/2) ... [2019-08-05 11:08:35,639 INFO L109 eAbstractionObserver]: Analyzing ICFG TestSequentialComposition.bpl [2019-08-05 11:08:35,648 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:08:35,655 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-08-05 11:08:35,671 INFO L252 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-08-05 11:08:35,695 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:08:35,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:08:35,696 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:08:35,696 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:08:35,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:08:35,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:08:35,697 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:08:35,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:08:35,697 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:08:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-08-05 11:08:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:08:35,722 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:35,723 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:08:35,727 INFO L418 AbstractCegarLoop]: === Iteration 1 === [procErr3ASSERT_VIOLATIONASSERT, procErr13ASSERT_VIOLATIONASSERT, procErr5ASSERT_VIOLATIONASSERT, procErr1ASSERT_VIOLATIONASSERT, procErr6ASSERT_VIOLATIONASSERT, procErr8ASSERT_VIOLATIONASSERT, procErr10ASSERT_VIOLATIONASSERT, procErr12ASSERT_VIOLATIONASSERT, procErr7ASSERT_VIOLATIONASSERT, procErr4ASSERT_VIOLATIONASSERT, procErr11ASSERT_VIOLATIONASSERT, procErr14ASSERT_VIOLATIONASSERT, procErr2ASSERT_VIOLATIONASSERT, procErr15ASSERT_VIOLATIONASSERT, procErr0ASSERT_VIOLATIONASSERT, procErr9ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 11:08:35,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:35,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:08:35,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:35,844 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 11:08:35,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:35,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:08:35,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:35,868 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2019-08-05 11:08:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:36,043 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2019-08-05 11:08:36,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:36,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:08:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:36,056 INFO L225 Difference]: With dead ends: 29 [2019-08-05 11:08:36,056 INFO L226 Difference]: Without dead ends: 28 [2019-08-05 11:08:36,059 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 11:08:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-08-05 11:08:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-08-05 11:08:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-08-05 11:08:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2019-08-05 11:08:36,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 2 [2019-08-05 11:08:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:36,092 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2019-08-05 11:08:36,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2019-08-05 11:08:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:08:36,092 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:36,092 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:08:36,093 INFO L418 AbstractCegarLoop]: === Iteration 2 === [procErr3ASSERT_VIOLATIONASSERT, procErr13ASSERT_VIOLATIONASSERT, procErr5ASSERT_VIOLATIONASSERT, procErr1ASSERT_VIOLATIONASSERT, procErr6ASSERT_VIOLATIONASSERT, procErr8ASSERT_VIOLATIONASSERT, procErr10ASSERT_VIOLATIONASSERT, procErr12ASSERT_VIOLATIONASSERT, procErr7ASSERT_VIOLATIONASSERT, procErr4ASSERT_VIOLATIONASSERT, procErr11ASSERT_VIOLATIONASSERT, procErr14ASSERT_VIOLATIONASSERT, procErr2ASSERT_VIOLATIONASSERT, procErr15ASSERT_VIOLATIONASSERT, procErr0ASSERT_VIOLATIONASSERT, procErr9ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2019-08-05 11:08:36,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:36,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:08:36,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:36,159 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 11:08:36,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:36,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:08:36,162 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:36,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:36,163 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 3 states. [2019-08-05 11:08:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:36,282 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-08-05 11:08:36,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:36,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 11:08:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:36,284 INFO L225 Difference]: With dead ends: 23 [2019-08-05 11:08:36,284 INFO L226 Difference]: Without dead ends: 23 [2019-08-05 11:08:36,286 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 11:08:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-08-05 11:08:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-08-05 11:08:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-08-05 11:08:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-08-05 11:08:36,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 4 [2019-08-05 11:08:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:36,291 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-08-05 11:08:36,291 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-08-05 11:08:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:08:36,292 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:36,292 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 11:08:36,293 INFO L418 AbstractCegarLoop]: === Iteration 3 === [procErr3ASSERT_VIOLATIONASSERT, procErr13ASSERT_VIOLATIONASSERT, procErr5ASSERT_VIOLATIONASSERT, procErr1ASSERT_VIOLATIONASSERT, procErr6ASSERT_VIOLATIONASSERT, procErr8ASSERT_VIOLATIONASSERT, procErr10ASSERT_VIOLATIONASSERT, procErr12ASSERT_VIOLATIONASSERT, procErr7ASSERT_VIOLATIONASSERT, procErr4ASSERT_VIOLATIONASSERT, procErr11ASSERT_VIOLATIONASSERT, procErr14ASSERT_VIOLATIONASSERT, procErr2ASSERT_VIOLATIONASSERT, procErr15ASSERT_VIOLATIONASSERT, procErr0ASSERT_VIOLATIONASSERT, procErr9ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash 28692770, now seen corresponding path program 1 times [2019-08-05 11:08:36,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:36,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:08:36,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:36,376 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 11:08:36,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:36,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:08:36,377 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:36,378 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 3 states. [2019-08-05 11:08:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:36,516 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-08-05 11:08:36,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:36,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-08-05 11:08:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:36,518 INFO L225 Difference]: With dead ends: 19 [2019-08-05 11:08:36,518 INFO L226 Difference]: Without dead ends: 19 [2019-08-05 11:08:36,518 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:08:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-08-05 11:08:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-08-05 11:08:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-08-05 11:08:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2019-08-05 11:08:36,522 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 5 [2019-08-05 11:08:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:36,522 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2019-08-05 11:08:36,523 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2019-08-05 11:08:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-08-05 11:08:36,523 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:36,524 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 11:08:36,524 INFO L418 AbstractCegarLoop]: === Iteration 4 === [procErr3ASSERT_VIOLATIONASSERT, procErr13ASSERT_VIOLATIONASSERT, procErr5ASSERT_VIOLATIONASSERT, procErr1ASSERT_VIOLATIONASSERT, procErr6ASSERT_VIOLATIONASSERT, procErr8ASSERT_VIOLATIONASSERT, procErr10ASSERT_VIOLATIONASSERT, procErr12ASSERT_VIOLATIONASSERT, procErr7ASSERT_VIOLATIONASSERT, procErr4ASSERT_VIOLATIONASSERT, procErr11ASSERT_VIOLATIONASSERT, procErr14ASSERT_VIOLATIONASSERT, procErr2ASSERT_VIOLATIONASSERT, procErr15ASSERT_VIOLATIONASSERT, procErr0ASSERT_VIOLATIONASSERT, procErr9ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1125405482, now seen corresponding path program 1 times [2019-08-05 11:08:36,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:36,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:08:36,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:36,601 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 11:08:36,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:36,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:08:36,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:36,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:36,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:36,604 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 3 states. [2019-08-05 11:08:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:36,718 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-08-05 11:08:36,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:36,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-08-05 11:08:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:36,719 INFO L225 Difference]: With dead ends: 18 [2019-08-05 11:08:36,720 INFO L226 Difference]: Without dead ends: 18 [2019-08-05 11:08:36,720 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 11:08:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-08-05 11:08:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-08-05 11:08:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-08-05 11:08:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-08-05 11:08:36,723 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 13 [2019-08-05 11:08:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:36,724 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-08-05 11:08:36,724 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-08-05 11:08:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-08-05 11:08:36,725 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:36,725 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 11:08:36,726 INFO L418 AbstractCegarLoop]: === Iteration 5 === [procErr3ASSERT_VIOLATIONASSERT, procErr13ASSERT_VIOLATIONASSERT, procErr5ASSERT_VIOLATIONASSERT, procErr1ASSERT_VIOLATIONASSERT, procErr6ASSERT_VIOLATIONASSERT, procErr8ASSERT_VIOLATIONASSERT, procErr10ASSERT_VIOLATIONASSERT, procErr12ASSERT_VIOLATIONASSERT, procErr7ASSERT_VIOLATIONASSERT, procErr4ASSERT_VIOLATIONASSERT, procErr11ASSERT_VIOLATIONASSERT, procErr14ASSERT_VIOLATIONASSERT, procErr2ASSERT_VIOLATIONASSERT, procErr15ASSERT_VIOLATIONASSERT, procErr0ASSERT_VIOLATIONASSERT, procErr9ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash 756876334, now seen corresponding path program 1 times [2019-08-05 11:08:36,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:36,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:08:36,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:36,790 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 11:08:36,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:36,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:08:36,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:36,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:36,792 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 3 states. [2019-08-05 11:08:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:36,897 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2019-08-05 11:08:36,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:36,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-08-05 11:08:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:36,899 INFO L225 Difference]: With dead ends: 17 [2019-08-05 11:08:36,899 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:08:36,899 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 11:08:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:08:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:08:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:08:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:08:36,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-08-05 11:08:36,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:36,902 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:08:36,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:08:36,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:08:36,908 INFO L202 PluginConnector]: Adding new model TestSequentialComposition.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:08:36 BoogieIcfgContainer [2019-08-05 11:08:36,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:08:36,911 INFO L168 Benchmark]: Toolchain (without parser) took 1944.76 ms. Allocated memory was 133.7 MB in the beginning and 170.9 MB in the end (delta: 37.2 MB). Free memory was 110.1 MB in the beginning and 126.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,912 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 133.7 MB. Free memory was 111.3 MB in the beginning and 111.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 133.7 MB. Free memory was 109.9 MB in the beginning and 108.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,914 INFO L168 Benchmark]: Boogie Preprocessor took 25.27 ms. Allocated memory is still 133.7 MB. Free memory was 108.0 MB in the beginning and 106.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,916 INFO L168 Benchmark]: RCFGBuilder took 600.37 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 94.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,918 INFO L168 Benchmark]: TraceAbstraction took 1275.41 ms. Allocated memory was 133.7 MB in the beginning and 170.9 MB in the end (delta: 37.2 MB). Free memory was 93.9 MB in the beginning and 126.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:36,924 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 0.28 ms. Allocated memory is still 133.7 MB. Free memory was 111.3 MB in the beginning and 111.1 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 38.20 ms. Allocated memory is still 133.7 MB. Free memory was 109.9 MB in the beginning and 108.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.27 ms. Allocated memory is still 133.7 MB. Free memory was 108.0 MB in the beginning and 106.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.37 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 94.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1275.41 ms. Allocated memory was 133.7 MB in the beginning and 170.9 MB in the end (delta: 37.2 MB). Free memory was 93.9 MB in the beginning and 126.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 117]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 59]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 66]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 81]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 110]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 73]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 52]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 102]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 124]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 131]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 88]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 16 error locations. SAFE Result, 1.2s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 498 SizeOfPredicates, 2 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...