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/20181010-MemSafetyPathprograms/test-bitfields-2.1_false-valid-free.i_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:57:37,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:57:37,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:57:37,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:57:37,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:57:37,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:57:37,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:57:37,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:57:37,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:57:37,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:57:37,430 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:57:37,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:57:37,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:57:37,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:57:37,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:57:37,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:57:37,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:57:37,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:57:37,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:57:37,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:57:37,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:57:37,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:57:37,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:57:37,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:57:37,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:57:37,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:57:37,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:57:37,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:57:37,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:57:37,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:57:37,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:57:37,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:57:37,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:57:37,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:57:37,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:57:37,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:57:37,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:57:37,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:57:37,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:57:37,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:57:37,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:57:37,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:57:37,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:57:37,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:57:37,516 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:57:37,517 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:57:37,518 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/test-bitfields-2.1_false-valid-free.i_13.bpl [2019-08-05 10:57:37,518 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/test-bitfields-2.1_false-valid-free.i_13.bpl' [2019-08-05 10:57:37,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:57:37,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:57:37,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:57:37,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:57:37,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:57:37,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:57:37,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:57:37,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:57:37,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:57:37,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... [2019-08-05 10:57:37,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:57:37,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:57:37,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:57:37,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:57:37,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:57:37,758 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 10:57:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:57:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:57:38,141 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:57:38,142 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:57:38,144 INFO L202 PluginConnector]: Adding new model test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:57:38 BoogieIcfgContainer [2019-08-05 10:57:38,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:57:38,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:57:38,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:57:38,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:57:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:57:37" (1/2) ... [2019-08-05 10:57:38,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e3e39c and model type test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:57:38, skipping insertion in model container [2019-08-05 10:57:38,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:57:38" (2/2) ... [2019-08-05 10:57:38,154 INFO L109 eAbstractionObserver]: Analyzing ICFG test-bitfields-2.1_false-valid-free.i_13.bpl [2019-08-05 10:57:38,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:57:38,191 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:57:38,226 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:57:38,282 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:57:38,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:57:38,283 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:57:38,283 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:57:38,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:57:38,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:57:38,284 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:57:38,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:57:38,284 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:57:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:57:38,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:57:38,304 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:57:38,305 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:57:38,308 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:57:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:57:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash 29985, now seen corresponding path program 1 times [2019-08-05 10:57:38,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:57:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:57:38,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 10:57:38,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:57:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:57:38,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:57:38,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:57:38,543 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:57:38,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:57:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:57:38,561 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:57:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:57:38,602 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 10:57:38,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:57:38,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 10:57:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:57:38,616 INFO L225 Difference]: With dead ends: 5 [2019-08-05 10:57:38,617 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:57:38,619 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:57:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:57:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:57:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:57:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:57:38,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 10:57:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:57:38,653 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:57:38,654 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:57:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:57:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:57:38,655 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:57:38,656 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:57:38,656 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:57:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:57:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash 927559, now seen corresponding path program 1 times [2019-08-05 10:57:38,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:57:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:57:38,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:57:38,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:57:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:57:38,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:57:38,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:57:38,920 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:57:38,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:57:38,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:57:38,921 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 10:57:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:57:39,011 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:57:39,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:57:39,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:57:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:57:39,012 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:57:39,012 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 10:57:39,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:57:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 10:57:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 10:57:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 10:57:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 10:57:39,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 10:57:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:57:39,016 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 10:57:39,016 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:57:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 10:57:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:57:39,017 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:57:39,017 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 10:57:39,018 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:57:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:57:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 28752353, now seen corresponding path program 2 times [2019-08-05 10:57:39,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:57:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:57:39,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:57:39,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:57:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:57:39,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:57:39,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:57:39,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:57:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:57:39,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:57:39,227 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2019-08-05 10:57:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:57:39,311 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:57:39,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:57:39,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-08-05 10:57:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:57:39,313 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:57:39,313 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:57:39,313 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:57:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:57:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:57:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:57:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:57:39,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-08-05 10:57:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:57:39,315 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:57:39,315 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:57:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:57:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:57:39,316 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:57:39,316 INFO L399 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2019-08-05 10:57:39,316 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:57:39,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:57:39,317 INFO L82 PathProgramCache]: Analyzing trace with hash 891320967, now seen corresponding path program 3 times [2019-08-05 10:57:39,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:57:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:57:39,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:57:39,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:57:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:57:39,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:57:39,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:57:39,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:57:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:57:39,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:57:39,495 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-08-05 10:57:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:57:39,516 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:57:39,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:57:39,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:57:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:57:39,518 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:57:39,518 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:57:39,519 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:57:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:57:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 10:57:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 10:57:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-08-05 10:57:39,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-08-05 10:57:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:57:39,522 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-08-05 10:57:39,522 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:57:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-08-05 10:57:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 10:57:39,522 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:57:39,522 INFO L399 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2019-08-05 10:57:39,523 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:57:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:57:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144225, now seen corresponding path program 4 times [2019-08-05 10:57:39,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:57:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:57:39,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2019-08-05 10:57:39,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:57:39,682 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-08-05 10:57:39,682 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:57:39,725 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:57:39,726 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 10:57:39,727 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2019-08-05 10:57:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-08-05 10:57:39,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:57:39,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:57:39,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:57:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:57:39,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:57:39,756 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2019-08-05 10:57:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:57:39,756 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:57:39,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:57:39,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-08-05 10:57:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:57:39,757 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:57:39,758 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:57:39,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:57:39,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:57:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:57:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:57:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:57:39,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-08-05 10:57:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:57:39,759 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:57:39,759 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:57:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:57:39,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:57:39,764 INFO L202 PluginConnector]: Adding new model test-bitfields-2.1_false-valid-free.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:57:39 BoogieIcfgContainer [2019-08-05 10:57:39,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:57:39,766 INFO L168 Benchmark]: Toolchain (without parser) took 2184.43 ms. Allocated memory was 140.0 MB in the beginning and 178.3 MB in the end (delta: 38.3 MB). Free memory was 108.8 MB in the beginning and 114.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,767 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 140.0 MB. Free memory was 108.6 MB in the beginning and 106.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,769 INFO L168 Benchmark]: Boogie Preprocessor took 53.88 ms. Allocated memory is still 140.0 MB. Free memory was 106.9 MB in the beginning and 105.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,770 INFO L168 Benchmark]: RCFGBuilder took 460.91 ms. Allocated memory is still 140.0 MB. Free memory was 105.4 MB in the beginning and 87.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,771 INFO L168 Benchmark]: TraceAbstraction took 1617.35 ms. Allocated memory was 140.0 MB in the beginning and 178.3 MB in the end (delta: 38.3 MB). Free memory was 86.8 MB in the beginning and 114.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:57:39,776 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 140.0 MB. Free memory was 110.6 MB in the beginning and 110.4 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 46.52 ms. Allocated memory is still 140.0 MB. Free memory was 108.6 MB in the beginning and 106.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.88 ms. Allocated memory is still 140.0 MB. Free memory was 106.9 MB in the beginning and 105.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.91 ms. Allocated memory is still 140.0 MB. Free memory was 105.4 MB in the beginning and 87.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1617.35 ms. Allocated memory was 140.0 MB in the beginning and 178.3 MB in the end (delta: 38.3 MB). Free memory was 86.8 MB in the beginning and 114.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 195]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=4, 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, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 660 SizeOfPredicates, 22 NumberOfNonLiveVariables, 535 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...