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/interprocedural/BugSubstitution.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:09:01,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:09:01,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:09:01,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:09:01,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:09:01,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:09:01,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:09:01,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:09:01,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:09:01,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:09:01,199 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:09:01,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:09:01,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:09:01,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:09:01,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:09:01,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:09:01,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:09:01,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:09:01,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:09:01,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:09:01,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:09:01,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:09:01,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:09:01,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:09:01,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:09:01,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:09:01,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:09:01,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:09:01,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:09:01,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:09:01,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:09:01,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:09:01,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:09:01,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:09:01,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:09:01,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:09:01,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:09:01,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:09:01,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:09:01,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:09:01,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:09:01,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:09:01,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:09:01,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:09:01,307 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:09:01,308 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:09:01,308 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/interprocedural/BugSubstitution.bpl [2019-08-05 11:09:01,309 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/interprocedural/BugSubstitution.bpl' [2019-08-05 11:09:01,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:09:01,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:09:01,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:01,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:09:01,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:09:01,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,375 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:09:01,376 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:09:01,376 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:09:01,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:01,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:09:01,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:09:01,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:09:01,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/1) ... [2019-08-05 11:09:01,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:09:01,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:09:01,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:09:01,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:09:01,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (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 11:09:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure test_proc [2019-08-05 11:09:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure test_proc [2019-08-05 11:09:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2019-08-05 11:09:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2019-08-05 11:09:01,534 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 11:09:01,852 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:09:01,852 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-08-05 11:09:01,854 INFO L202 PluginConnector]: Adding new model BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:01 BoogieIcfgContainer [2019-08-05 11:09:01,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:09:01,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:09:01,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:09:01,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:09:01,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:01" (1/2) ... [2019-08-05 11:09:01,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b6f940 and model type BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:09:01, skipping insertion in model container [2019-08-05 11:09:01,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:01" (2/2) ... [2019-08-05 11:09:01,869 INFO L109 eAbstractionObserver]: Analyzing ICFG BugSubstitution.bpl [2019-08-05 11:09:01,880 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:09:01,889 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-08-05 11:09:01,923 INFO L252 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-08-05 11:09:01,968 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:09:01,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:09:01,970 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:09:01,970 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:09:01,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:09:01,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:09:01,970 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:09:01,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:09:01,971 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:09:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-08-05 11:09:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:09:02,020 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:02,022 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:09:02,024 INFO L418 AbstractCegarLoop]: === Iteration 1 === [test_procErr0ENSURES_VIOLATIONPOST_CONDITION, MainErr2ASSERT_VIOLATIONASSERT, MainErr1ASSERT_VIOLATIONPOST_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT]=== [2019-08-05 11:09:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1367, now seen corresponding path program 1 times [2019-08-05 11:09:02,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:02,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:09:02,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:02,190 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 11:09:02,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:02,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:09:02,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:02,217 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-08-05 11:09:02,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:02,246 INFO L93 Difference]: Finished difference Result 11 states and 9 transitions. [2019-08-05 11:09:02,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:02,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:09:02,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:02,261 INFO L225 Difference]: With dead ends: 11 [2019-08-05 11:09:02,262 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 11:09:02,264 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 11:09:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 11:09:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 11:09:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 11:09:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2019-08-05 11:09:02,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 2 [2019-08-05 11:09:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:02,300 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2019-08-05 11:09:02,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2019-08-05 11:09:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:09:02,301 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:02,301 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:09:02,302 INFO L418 AbstractCegarLoop]: === Iteration 2 === [test_procErr0ENSURES_VIOLATIONPOST_CONDITION, MainErr2ASSERT_VIOLATIONASSERT, MainErr1ASSERT_VIOLATIONPOST_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT]=== [2019-08-05 11:09:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1090, now seen corresponding path program 1 times [2019-08-05 11:09:02,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:02,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:09:02,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:02,338 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 11:09:02,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:02,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:09:02,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:02,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:02,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:02,342 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 3 states. [2019-08-05 11:09:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:02,347 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-08-05 11:09:02,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:02,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:09:02,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:02,348 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:09:02,348 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:09:02,350 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 11:09:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:09:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:09:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:09:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-08-05 11:09:02,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 2 [2019-08-05 11:09:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:02,352 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-08-05 11:09:02,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-08-05 11:09:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:09:02,353 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:02,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:09:02,354 INFO L418 AbstractCegarLoop]: === Iteration 3 === [test_procErr0ENSURES_VIOLATIONPOST_CONDITION, MainErr2ASSERT_VIOLATIONASSERT, MainErr1ASSERT_VIOLATIONPOST_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT]=== [2019-08-05 11:09:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:02,355 INFO L82 PathProgramCache]: Analyzing trace with hash 33829, now seen corresponding path program 1 times [2019-08-05 11:09:02,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:02,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:09:02,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:02,416 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 11:09:02,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:02,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:09:02,417 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:09:02,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:09:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:09:02,418 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 4 states. [2019-08-05 11:09:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:02,461 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-08-05 11:09:02,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:09:02,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-08-05 11:09:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:02,463 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:09:02,463 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:09:02,464 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 11:09:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:09:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:09:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:09:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2019-08-05 11:09:02,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2019-08-05 11:09:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:02,467 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2019-08-05 11:09:02,467 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:09:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2019-08-05 11:09:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:09:02,468 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:02,468 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:09:02,468 INFO L418 AbstractCegarLoop]: === Iteration 4 === [test_procErr0ENSURES_VIOLATIONPOST_CONDITION, MainErr2ASSERT_VIOLATIONASSERT, MainErr1ASSERT_VIOLATIONPOST_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT]=== [2019-08-05 11:09:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:02,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1048740, now seen corresponding path program 1 times [2019-08-05 11:09:02,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:02,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:09:02,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:02,493 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 11:09:02,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:02,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:09:02,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:02,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:02,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:02,495 INFO L87 Difference]: Start difference. First operand 5 states and 4 transitions. Second operand 3 states. [2019-08-05 11:09:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:02,496 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 11:09:02,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:02,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 11:09:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:02,497 INFO L225 Difference]: With dead ends: 4 [2019-08-05 11:09:02,497 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:09:02,498 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 11:09:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:09:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:09:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:09:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:09:02,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-08-05 11:09:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:02,500 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:09:02,500 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:09:02,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:09:02,512 INFO L202 PluginConnector]: Adding new model BugSubstitution.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:09:02 BoogieIcfgContainer [2019-08-05 11:09:02,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:09:02,515 INFO L168 Benchmark]: Toolchain (without parser) took 1171.79 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 65.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,516 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 110.0 MB in the beginning and 109.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.70 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 106.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,518 INFO L168 Benchmark]: Boogie Preprocessor took 18.60 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 105.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,519 INFO L168 Benchmark]: RCFGBuilder took 443.77 ms. Allocated memory is still 140.5 MB. Free memory was 105.4 MB in the beginning and 95.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,520 INFO L168 Benchmark]: TraceAbstraction took 657.25 ms. Allocated memory is still 140.5 MB. Free memory was 94.8 MB in the beginning and 65.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:02,524 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 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 110.0 MB in the beginning and 109.8 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 47.70 ms. Allocated memory is still 140.5 MB. Free memory was 108.8 MB in the beginning and 106.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.60 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 105.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.77 ms. Allocated memory is still 140.5 MB. Free memory was 105.4 MB in the beginning and 95.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 657.25 ms. Allocated memory is still 140.5 MB. Free memory was 94.8 MB in the beginning and 65.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 28]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 6]: procedure postcondition always holds and assertion always holds For all program executions holds that procedure postcondition always holds and assertion always holds at this location - PositiveResult [Line: 6]: procedure precondition always holds and assertion always holds For all program executions holds that procedure precondition always holds and assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 10 SDslu, 10 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 3 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 11 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...