java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:10:54,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:10:54,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:10:54,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:10:54,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:10:54,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:10:54,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:10:54,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:10:54,239 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:10:54,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:10:54,241 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:10:54,241 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:10:54,242 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:10:54,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:10:54,244 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:10:54,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:10:54,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:10:54,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:10:54,253 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:10:54,255 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:10:54,256 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:10:54,258 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:10:54,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 21:10:54,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 21:10:54,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 21:10:54,264 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 21:10:54,265 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 21:10:54,268 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 21:10:54,269 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 21:10:54,270 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 21:10:54,271 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 21:10:54,274 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-12 21:10:54,275 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 21:10:54,275 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 21:10:54,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 21:10:54,279 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 21:10:54,279 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:10:54,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:10:54,297 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:10:54,298 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:10:54,298 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:10:54,299 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:10:54,299 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:10:54,299 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:10:54,300 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:10:54,300 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:10:54,301 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:10:54,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:10:54,301 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:10:54,301 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:10:54,302 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:10:54,302 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:10:54,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:10:54,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:10:54,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:10:54,380 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:10:54,380 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:10:54,381 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl [2018-10-12 21:10:54,381 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl' [2018-10-12 21:10:54,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:10:54,448 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:10:54,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:10:54,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:10:54,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:10:54,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/1) ... [2018-10-12 21:10:54,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:10:54,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:10:54,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:10:54,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:10:54,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (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 [2018-10-12 21:10:54,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:10:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:10:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:10:55,310 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:10:55,311 INFO L202 PluginConnector]: Adding new model reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:10:55 BoogieIcfgContainer [2018-10-12 21:10:55,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:10:55,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:10:55,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:10:55,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:10:55,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:10:54" (1/2) ... [2018-10-12 21:10:55,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe1b12d and model type reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:55, skipping insertion in model container [2018-10-12 21:10:55,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:10:55" (2/2) ... [2018-10-12 21:10:55,321 INFO L112 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl [2018-10-12 21:10:55,332 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:10:55,341 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:10:55,360 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:10:55,392 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:10:55,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:10:55,393 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:10:55,393 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:10:55,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:10:55,394 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:10:55,394 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:10:55,394 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:10:55,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:10:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-10-12 21:10:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-12 21:10:55,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:55,436 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:55,438 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:55,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1826749566, now seen corresponding path program 1 times [2018-10-12 21:10:55,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:56,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:10:56,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-12 21:10:56,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 21:10:56,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 21:10:56,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-12 21:10:56,081 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 10 states. [2018-10-12 21:10:56,657 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-12 21:10:56,897 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-12 21:10:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:57,066 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-12 21:10:57,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 21:10:57,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-10-12 21:10:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:57,082 INFO L225 Difference]: With dead ends: 54 [2018-10-12 21:10:57,082 INFO L226 Difference]: Without dead ends: 54 [2018-10-12 21:10:57,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-10-12 21:10:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-12 21:10:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2018-10-12 21:10:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-12 21:10:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-12 21:10:57,126 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 30 [2018-10-12 21:10:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:57,127 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-12 21:10:57,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 21:10:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-12 21:10:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-12 21:10:57,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:57,129 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:57,130 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:57,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash 543202194, now seen corresponding path program 1 times [2018-10-12 21:10:57,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:57,461 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:10:57,798 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:10:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:57,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:57,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-12 21:10:57,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 21:10:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 21:10:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-12 21:10:57,982 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 12 states. [2018-10-12 21:10:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:58,789 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-12 21:10:58,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-12 21:10:58,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2018-10-12 21:10:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:58,796 INFO L225 Difference]: With dead ends: 71 [2018-10-12 21:10:58,796 INFO L226 Difference]: Without dead ends: 71 [2018-10-12 21:10:58,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:10:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-12 21:10:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2018-10-12 21:10:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-12 21:10:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-12 21:10:58,806 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 44 [2018-10-12 21:10:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:58,807 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-12 21:10:58,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 21:10:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-12 21:10:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-12 21:10:58,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:58,810 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:58,810 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:58,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash 729892774, now seen corresponding path program 2 times [2018-10-12 21:10:58,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:59,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:59,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-12 21:10:59,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-12 21:10:59,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-12 21:10:59,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-10-12 21:10:59,178 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 14 states. [2018-10-12 21:11:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:00,480 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-12 21:11:00,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-12 21:11:00,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-10-12 21:11:00,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:00,483 INFO L225 Difference]: With dead ends: 69 [2018-10-12 21:11:00,484 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:11:00,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2018-10-12 21:11:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:11:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:11:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:11:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:11:00,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2018-10-12 21:11:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:00,487 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:11:00,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-12 21:11:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:11:00,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:11:00,493 INFO L202 PluginConnector]: Adding new model reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:11:00 BoogieIcfgContainer [2018-10-12 21:11:00,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:11:00,494 INFO L168 Benchmark]: Toolchain (without parser) took 6047.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 298.7 MB). Peak memory consumption was 298.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:11:00,496 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:11:00,497 INFO L168 Benchmark]: Boogie Preprocessor took 50.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:11:00,497 INFO L168 Benchmark]: RCFGBuilder took 812.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-12 21:11:00,498 INFO L168 Benchmark]: TraceAbstraction took 5180.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 277.6 MB). Peak memory consumption was 277.6 MB. Max. memory is 7.1 GB. [2018-10-12 21:11:00,502 INFO L336 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 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 812.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5180.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 277.6 MB). Peak memory consumption was 277.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: 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, 43 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 109 SDtfs, 641 SDslu, 455 SDs, 0 SdLazy, 434 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=2, 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, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 49219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-11-00-513.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-11-00-513.csv Received shutdown request...