java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc /storage/repos/ultimate/trunk/examples/toolchains/ReqCheck.xml -s /storage/repos/ultimate/trunk/examples/settings/reqanalyzer/reqanalyzer-nonlin.epf --traceabstraction.limit.analysis.time 300 --pea2boogie.always.use.all.invariants.during.rt-inconsistency.checks true --pea2boogie.check.vacuity true --pea2boogie.check.consistency true --pea2boogie.check.rt-inconsistency true --pea2boogie.report.trivial.rt-consistency false --pea2boogie.rt-inconsistency.range 2 -i /storage/repos/re2019-exp/testVacuous.new.req -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a613b84 [2019-04-05 11:56:36,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-04-05 11:56:36,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-04-05 11:56:36,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-04-05 11:56:36,953 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/trunk/examples/settings/reqanalyzer/reqanalyzer-nonlin.epf [2019-04-05 11:56:36,962 INFO L110 SettingsManager]: Loading preferences was successful [2019-04-05 11:56:36,962 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-04-05 11:56:36,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-04-05 11:56:36,968 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2019-04-05 11:56:36,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-04-05 11:56:36,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:12000 [2019-04-05 11:56:36,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-04-05 11:56:36,969 INFO L133 SettingsManager]: * Trace refinement exception blacklist=UNKNOWN [2019-04-05 11:56:36,969 INFO L133 SettingsManager]: * Stop after first violation was found=false [2019-04-05 11:56:36,969 INFO L133 SettingsManager]: * Compute statistics for interpolant sequences=false [2019-04-05 11:56:36,970 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2019-04-05 11:56:36,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-04-05 11:56:36,970 INFO L133 SettingsManager]: * Compute trace for counterexample result=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Limit analysis time -> 300 Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Always use all invariants during rt-inconsistency checks -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Check vacuity -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Check consistency -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Check rt-inconsistency -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Report trivial rt-consistency -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.pea2boogie: Rt-inconsistency range -> 2 [2019-04-05 11:56:37,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-04-05 11:56:37,027 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-04-05 11:56:37,031 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-04-05 11:56:37,032 INFO L271 PluginConnector]: Initializing ReqParser... [2019-04-05 11:56:37,033 INFO L276 PluginConnector]: ReqParser initialized [2019-04-05 11:56:37,034 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/re2019-exp/testVacuous.new.req [2019-04-05 11:56:37,034 INFO L94 ReqParser]: Parsing file /storage/repos/re2019-exp/testVacuous.new.req [2019-04-05 11:56:37,077 INFO L134 ReqParser]: 4 requirements (2 non-initialization) in total [2019-04-05 11:56:37,081 INFO L134 ReqParser]: 4 requirements (2 non-initialization) after unification [2019-04-05 11:56:37,087 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-04-05 11:56:37,088 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-04-05 11:56:37,089 INFO L113 PluginConnector]: ------------------------PEA to Boogie---------------------------- [2019-04-05 11:56:37,089 INFO L271 PluginConnector]: Initializing PEA to Boogie... [2019-04-05 11:56:37,089 INFO L276 PluginConnector]: PEA to Boogie initialized [2019-04-05 11:56:37,092 INFO L185 PluginConnector]: Executing the observer PEAtoBoogieObserver from plugin PEA to Boogie for "de.uni_freiburg.informatik.ultimate.reqparser OTHER 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,101 INFO L157 Req2BoogieTranslator]: Check vacuity=true, Rt-inconsistency range=2, Check consistency=true, Report trivial rt-consistency=false, Always use all invariants during rt-inconsistency checks=true [2019-04-05 11:56:37,113 INFO L59 ReqToPEA]: Transforming 2 requirements to PEAs [2019-04-05 11:56:37,123 INFO L87 ReqToPEA]: Following types of requirements were processed [2019-04-05 11:56:37,123 INFO L89 ReqToPEA]: class de.uni_freiburg.informatik.ultimate.lib.srparse.pattern.BndResponsePatternUT : 1 [2019-04-05 11:56:37,123 INFO L89 ReqToPEA]: class de.uni_freiburg.informatik.ultimate.lib.srparse.pattern.InstAbsPattern : 1 [2019-04-05 11:56:37,124 INFO L92 ReqToPEA]: Finished transforming 2 requirements to PEAs No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-04-05 11:56:37,298 INFO L154 cyConditionGenerator]: Finished generating primed state invariant of size 2 [2019-04-05 11:56:37,311 INFO L769 Req2BoogieTranslator]: 1 of 2 requirements are invariant [2019-04-05 11:56:37,311 INFO L774 Req2BoogieTranslator]: No rt-inconsistencies possible [2019-04-05 11:56:37,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37 Unit [2019-04-05 11:56:37,321 INFO L132 PluginConnector]: ------------------------ END PEA to Boogie---------------------------- [2019-04-05 11:56:37,322 INFO L113 PluginConnector]: ------------------------Boogie Printer---------------------------- [2019-04-05 11:56:37,322 INFO L271 PluginConnector]: Initializing Boogie Printer... [2019-04-05 11:56:37,322 INFO L276 PluginConnector]: Boogie Printer initialized [2019-04-05 11:56:37,324 INFO L185 PluginConnector]: Executing the observer BoogiePrinterObserver from plugin Boogie Printer for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,324 INFO L116 oogiePrinterObserver]: File already exists and will be overwritten: /tmp/boogiePrinter.bpl [2019-04-05 11:56:37,324 INFO L120 oogiePrinterObserver]: Writing to file /tmp/boogiePrinter.bpl [2019-04-05 11:56:37,330 INFO L132 PluginConnector]: ------------------------ END Boogie Printer---------------------------- [2019-04-05 11:56:37,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-04-05 11:56:37,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-04-05 11:56:37,331 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-04-05 11:56:37,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... [2019-04-05 11:56:37,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-04-05 11:56:37,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-04-05 11:56:37,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-04-05 11:56:37,380 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-04-05 11:56:37,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-04-05 11:56:37,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure myProcedure given in one single declaration [2019-04-05 11:56:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure myProcedure [2019-04-05 11:56:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure myProcedure Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:12000 [2019-04-05 11:56:38,185 INFO L278 CfgBuilder]: Using library mode [2019-04-05 11:56:38,185 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-04-05 11:56:38,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 11:56:38 BoogieIcfgContainer [2019-04-05 11:56:38,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-04-05 11:56:38,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-04-05 11:56:38,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-04-05 11:56:38,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-04-05 11:56:38,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.reqparser OTHER 05.04 11:56:37" (1/3) ... [2019-04-05 11:56:38,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136fbb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 05.04 11:56:38, skipping insertion in model container [2019-04-05 11:56:38,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.pea2boogie AST 05.04 11:56:37" (2/3) ... [2019-04-05 11:56:38,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136fbb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 11:56:38, skipping insertion in model container [2019-04-05 11:56:38,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 11:56:38" (3/3) ... [2019-04-05 11:56:38,196 INFO L112 eAbstractionObserver]: Analyzing ICFG [2019-04-05 11:56:38,206 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-04-05 11:56:38,213 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-04-05 11:56:38,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-04-05 11:56:38,267 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-04-05 11:56:38,267 INFO L383 AbstractCegarLoop]: Hoare is false [2019-04-05 11:56:38,268 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-04-05 11:56:38,268 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-04-05 11:56:38,268 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-04-05 11:56:38,268 INFO L387 AbstractCegarLoop]: Difference is false [2019-04-05 11:56:38,268 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-04-05 11:56:38,269 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == myProcedureErr0ASSERT_VIOLATIONVACUOUSforID1======== [2019-04-05 11:56:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-04-05 11:56:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-04-05 11:56:38,302 INFO L394 BasicCegarLoop]: Found error trace [2019-04-05 11:56:38,303 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-04-05 11:56:38,303 INFO L423 AbstractCegarLoop]: === Iteration 1 === [myProcedureErr0ASSERT_VIOLATIONVACUOUSforID1]=== [2019-04-05 11:56:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-04-05 11:56:38,310 INFO L82 PathProgramCache]: Analyzing trace with hash 33507, now seen corresponding path program 1 times [2019-04-05 11:56:38,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-04-05 11:56:38,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-04-05 11:56:38,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:38,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-04-05 11:56:38,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-04-05 11:56:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-04-05 11:56:38,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-04-05 11:56:38,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-04-05 11:56:38,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-04-05 11:56:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-04-05 11:56:38,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-04-05 11:56:38,541 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-04-05 11:56:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-04-05 11:56:38,643 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-04-05 11:56:38,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-04-05 11:56:38,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-04-05 11:56:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-04-05 11:56:38,655 INFO L225 Difference]: With dead ends: 12 [2019-04-05 11:56:38,656 INFO L226 Difference]: Without dead ends: 8 [2019-04-05 11:56:38,657 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-04-05 11:56:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-04-05 11:56:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-04-05 11:56:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-04-05 11:56:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-04-05 11:56:38,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2019-04-05 11:56:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-04-05 11:56:38,693 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-04-05 11:56:38,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-04-05 11:56:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-04-05 11:56:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-04-05 11:56:38,694 INFO L394 BasicCegarLoop]: Found error trace [2019-04-05 11:56:38,694 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-04-05 11:56:38,694 INFO L423 AbstractCegarLoop]: === Iteration 2 === [myProcedureErr0ASSERT_VIOLATIONVACUOUSforID1]=== [2019-04-05 11:56:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-04-05 11:56:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash 998359708, now seen corresponding path program 1 times [2019-04-05 11:56:38,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-04-05 11:56:38,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-04-05 11:56:38,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:38,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-04-05 11:56:38,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-04-05 11:56:39,176 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-04-05 11:56:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-04-05 11:56:39,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-04-05 11:56:39,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-04-05 11:56:39,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-04-05 11:56:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-04-05 11:56:39,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 10 conjunts are in the unsatisfiable core [2019-04-05 11:56:39,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-04-05 11:56:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-04-05 11:56:39,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-04-05 11:56:39,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2019-04-05 11:56:39,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-04-05 11:56:39,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-04-05 11:56:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-04-05 11:56:39,526 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-04-05 11:56:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-04-05 11:56:39,587 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-04-05 11:56:39,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-04-05 11:56:39,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-04-05 11:56:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-04-05 11:56:39,589 INFO L225 Difference]: With dead ends: 6 [2019-04-05 11:56:39,589 INFO L226 Difference]: Without dead ends: 0 [2019-04-05 11:56:39,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-04-05 11:56:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-04-05 11:56:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-04-05 11:56:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-04-05 11:56:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-04-05 11:56:39,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-04-05 11:56:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-04-05 11:56:39,592 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-04-05 11:56:39,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-04-05 11:56:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-04-05 11:56:39,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-04-05 11:56:39,596 INFO L190 ceAbstractionStarter]: Result for error location myProcedureErr0ASSERT_VIOLATIONVACUOUSforID1 was SAFE (1/2) [2019-04-05 11:56:39,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-04-05 11:56:39,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-04-05 11:56:39,599 INFO L383 AbstractCegarLoop]: Hoare is false [2019-04-05 11:56:39,599 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-04-05 11:56:39,599 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-04-05 11:56:39,599 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-04-05 11:56:39,600 INFO L387 AbstractCegarLoop]: Difference is false [2019-04-05 11:56:39,600 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-04-05 11:56:39,600 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == myProcedureErr1ASSERT_VIOLATIONCONSISTENCYforallrequirements======== [2019-04-05 11:56:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-04-05 11:56:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-04-05 11:56:39,601 INFO L394 BasicCegarLoop]: Found error trace [2019-04-05 11:56:39,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-04-05 11:56:39,602 INFO L423 AbstractCegarLoop]: === Iteration 1 === [myProcedureErr1ASSERT_VIOLATIONCONSISTENCYforallrequirements]=== [2019-04-05 11:56:39,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-04-05 11:56:39,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1038777, now seen corresponding path program 1 times [2019-04-05 11:56:39,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-04-05 11:56:39,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-04-05 11:56:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:39,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-04-05 11:56:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-04-05 11:56:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-04-05 11:56:39,613 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-04-05 11:56:39,625 INFO L190 ceAbstractionStarter]: Result for error location myProcedureErr1ASSERT_VIOLATIONCONSISTENCYforallrequirements was UNSAFE (2/2) [2019-04-05 11:56:39,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 11:56:39 BoogieIcfgContainer [2019-04-05 11:56:39,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-04-05 11:56:39,627 INFO L168 Benchmark]: Toolchain (without parser) took 2539.91 ms. Allocated memory was 134.7 MB in the beginning and 169.3 MB in the end (delta: 34.6 MB). Free memory was 110.3 MB in the beginning and 118.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,629 INFO L168 Benchmark]: ReqParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,630 INFO L168 Benchmark]: PEA to Boogie took 233.12 ms. Allocated memory is still 134.7 MB. Free memory was 110.3 MB in the beginning and 101.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,631 INFO L168 Benchmark]: Boogie Printer took 8.04 ms. Allocated memory is still 134.7 MB. Free memory was 101.9 MB in the beginning and 101.3 MB in the end (delta: 629.3 kB). Peak memory consumption was 629.3 kB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,632 INFO L168 Benchmark]: Boogie Preprocessor took 49.15 ms. Allocated memory is still 134.7 MB. Free memory was 101.3 MB in the beginning and 99.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,633 INFO L168 Benchmark]: RCFGBuilder took 807.44 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 76.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-04-05 11:56:39,635 INFO L168 Benchmark]: TraceAbstraction took 1438.23 ms. Allocated memory was 134.7 MB in the beginning and 169.3 MB in the end (delta: 34.6 MB). Free memory was 76.3 MB in the beginning and 118.1 MB in the end (delta: -41.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-04-05 11:56:39,648 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * ReqParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * PEA to Boogie took 233.12 ms. Allocated memory is still 134.7 MB. Free memory was 110.3 MB in the beginning and 101.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. * Boogie Printer took 8.04 ms. Allocated memory is still 134.7 MB. Free memory was 101.9 MB in the beginning and 101.3 MB in the end (delta: 629.3 kB). Peak memory consumption was 629.3 kB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.15 ms. Allocated memory is still 134.7 MB. Free memory was 101.3 MB in the beginning and 99.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 807.44 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 76.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1438.23 ms. Allocated memory was 134.7 MB in the beginning and 169.3 MB in the end (delta: 34.6 MB). Free memory was 76.3 MB in the beginning and 118.1 MB in the end (delta: -41.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ReqCheckFailResult [Line: -1]: Requirement ID1 is vacuous Requirement ID1 is vacuous - StatisticsResult: Ultimate Automizer benchmark data for error location: myProcedureErr0ASSERT_VIOLATIONVACUOUSforID1 CFG has 1 procedures, 7 locations, 2 error locations. SAFE Result, 1.3s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 7 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - ReqCheckSuccessResult [UNKNOWN] : All requirements are consistent All requirements are consistent - StatisticsResult: Ultimate Automizer benchmark data for error location: myProcedureErr1ASSERT_VIOLATIONCONSISTENCYforallrequirements CFG has 1 procedures, 7 locations, 2 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...