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/960521-1_1_false-valid-free.i_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:05:50,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:05:50,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:05:50,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:05:50,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:05:50,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:05:50,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:05:50,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:05:50,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:05:50,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:05:50,034 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:05:50,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:05:50,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:05:50,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:05:50,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:05:50,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:05:50,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:05:50,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:05:50,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:05:50,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:05:50,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:05:50,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:05:50,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:05:50,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:05:50,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:05:50,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:05:50,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:05:50,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:05:50,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:05:50,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:05:50,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:05:50,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:05:50,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:05:50,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:05:50,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:05:50,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:05:50,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:05:50,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:05:50,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:05:50,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:05:50,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:05:50,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:05:50,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:05:50,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:05:50,127 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:05:50,128 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:05:50,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/960521-1_1_false-valid-free.i_12.bpl [2019-08-05 11:05:50,129 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/960521-1_1_false-valid-free.i_12.bpl' [2019-08-05 11:05:50,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:05:50,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:05:50,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:05:50,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:05:50,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:05:50,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:05:50,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:05:50,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:05:50,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:05:50,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/1) ... [2019-08-05 11:05:50,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:05:50,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:05:50,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:05:50,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:05:50,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (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 11:05:50,319 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:05:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:05:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:05:50,648 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:05:50,648 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:05:50,650 INFO L202 PluginConnector]: Adding new model 960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:05:50 BoogieIcfgContainer [2019-08-05 11:05:50,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:05:50,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:05:50,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:05:50,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:05:50,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:05:50" (1/2) ... [2019-08-05 11:05:50,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64314d45 and model type 960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:05:50, skipping insertion in model container [2019-08-05 11:05:50,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:05:50" (2/2) ... [2019-08-05 11:05:50,659 INFO L109 eAbstractionObserver]: Analyzing ICFG 960521-1_1_false-valid-free.i_12.bpl [2019-08-05 11:05:50,670 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:05:50,678 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:05:50,697 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:05:50,723 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:05:50,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:05:50,724 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:05:50,724 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:05:50,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:05:50,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:05:50,725 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:05:50,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:05:50,727 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:05:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 11:05:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:05:50,762 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:05:50,763 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:05:50,775 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:05:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:05:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2019-08-05 11:05:50,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:05:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:05:50,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:05:50,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:05:50,985 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 11:05:50,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:05:50,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:05:50,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:05:51,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:05:51,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:05:51,012 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 11:05:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:05:51,045 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 11:05:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:05:51,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:05:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:05:51,059 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:05:51,059 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:05:51,061 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 11:05:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:05:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:05:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:05:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:05:51,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:05:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:05:51,095 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:05:51,095 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:05:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:05:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:05:51,096 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:05:51,096 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:05:51,096 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:05:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:05:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2019-08-05 11:05:51,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:05:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:05:51,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2019-08-05 11:05:51,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:05:51,317 INFO L392 ElimStorePlain]: Different costs {0=[|ULTIMATE.start_#Ultimate.alloc_old_#length|], 2=[|v_#valid_8|]} [2019-08-05 11:05:51,389 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 11:05:51,390 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:05:51,616 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-08-05 11:05:51,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:05:51,677 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-08-05 11:05:51,679 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 11:05:51,806 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-08-05 11:05:51,806 INFO L567 ElimStorePlain]: treesize reduction 12, result has 76.5 percent of original size [2019-08-05 11:05:51,849 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-08-05 11:05:51,850 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-08-05 11:05:51,959 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-08-05 11:05:51,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:05:51,963 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-08-05 11:05:51,963 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:47, output treesize:32 [2019-08-05 11:05:52,115 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-08-05 11:05:52,116 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:05:52,165 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:05:52,167 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-08-05 11:05:52,167 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:43, output treesize:28 [2019-08-05 11:05:52,228 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 11:05:52,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:05:52,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:05:52,230 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:05:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:05:52,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:05:52,231 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 11:05:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:05:52,261 INFO L93 Difference]: Finished difference Result 3 states and 3 transitions. [2019-08-05 11:05:52,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:05:52,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 11:05:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:05:52,262 INFO L225 Difference]: With dead ends: 3 [2019-08-05 11:05:52,262 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:05:52,263 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 11:05:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:05:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:05:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:05:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:05:52,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-08-05 11:05:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:05:52,265 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:05:52,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:05:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:05:52,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:05:52,270 INFO L202 PluginConnector]: Adding new model 960521-1_1_false-valid-free.i_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:05:52 BoogieIcfgContainer [2019-08-05 11:05:52,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:05:52,272 INFO L168 Benchmark]: Toolchain (without parser) took 2093.52 ms. Allocated memory was 139.5 MB in the beginning and 178.8 MB in the end (delta: 39.3 MB). Free memory was 107.5 MB in the beginning and 127.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:05:52,273 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:05:52,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 139.5 MB. Free memory was 107.5 MB in the beginning and 105.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:05:52,275 INFO L168 Benchmark]: Boogie Preprocessor took 27.04 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 104.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:05:52,276 INFO L168 Benchmark]: RCFGBuilder took 404.24 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 90.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:05:52,277 INFO L168 Benchmark]: TraceAbstraction took 1617.62 ms. Allocated memory was 139.5 MB in the beginning and 178.8 MB in the end (delta: 39.3 MB). Free memory was 90.5 MB in the beginning and 127.8 MB in the end (delta: -37.3 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:05:52,281 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 0.23 ms. Allocated memory is still 139.5 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.55 ms. Allocated memory is still 139.5 MB. Free memory was 107.5 MB in the beginning and 105.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.04 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 104.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.24 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 90.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1617.62 ms. Allocated memory was 139.5 MB in the beginning and 178.8 MB in the end (delta: 39.3 MB). Free memory was 90.5 MB in the beginning and 127.8 MB in the end (delta: -37.3 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: 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, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 2 QuantifiedInterpolants, 223 SizeOfPredicates, 25 NumberOfNonLiveVariables, 185 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...