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/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:41:11,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:41:11,593 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:41:11,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:41:11,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:41:11,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:41:11,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:41:11,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:41:11,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:41:11,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:41:11,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:41:11,613 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:41:11,614 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:41:11,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:41:11,616 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:41:11,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:41:11,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:41:11,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:41:11,621 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:41:11,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:41:11,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:41:11,625 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:41:11,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:41:11,642 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:41:11,660 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:41:11,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:41:11,662 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:41:11,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:41:11,663 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:41:11,663 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:41:11,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:41:11,664 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:41:11,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:41:11,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:41:11,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:41:11,665 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:41:11,665 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:41:11,666 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:41:11,667 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:41:11,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:41:11,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:41:11,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:41:11,756 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:41:11,756 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:41:11,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-10 15:41:11,758 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl' [2018-10-10 15:41:11,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:41:11,853 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:41:11,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:41:11,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:41:11,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:41:11,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/1) ... [2018-10-10 15:41:11,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:41:11,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:41:11,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:41:11,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:41:11,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (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 [2018-10-10 15:41:11,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:41:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:41:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:41:12,511 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:41:12,512 INFO L202 PluginConnector]: Adding new model openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:41:12 BoogieIcfgContainer [2018-10-10 15:41:12,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:41:12,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:41:12,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:41:12,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:41:12,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:41:11" (1/2) ... [2018-10-10 15:41:12,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249e34c0 and model type openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:41:12, skipping insertion in model container [2018-10-10 15:41:12,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:41:12" (2/2) ... [2018-10-10 15:41:12,522 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-10 15:41:12,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:41:12,544 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:41:12,561 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:41:12,596 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:41:12,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:41:12,597 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:41:12,597 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:41:12,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:41:12,598 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:41:12,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:41:12,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:41:12,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:41:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2018-10-10 15:41:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-10 15:41:12,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:12,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:12,644 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:12,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:12,651 INFO L82 PathProgramCache]: Analyzing trace with hash 333538993, now seen corresponding path program 1 times [2018-10-10 15:41:12,706 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:13,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:41:13,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:41:13,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:41:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:41:13,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:41:13,741 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 11 states. [2018-10-10 15:41:14,727 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-10 15:41:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:15,064 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-10 15:41:15,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:41:15,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2018-10-10 15:41:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:15,079 INFO L225 Difference]: With dead ends: 100 [2018-10-10 15:41:15,079 INFO L226 Difference]: Without dead ends: 100 [2018-10-10 15:41:15,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:41:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-10 15:41:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2018-10-10 15:41:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-10 15:41:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-10 15:41:15,124 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 53 [2018-10-10 15:41:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:15,125 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-10 15:41:15,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:41:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-10 15:41:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-10 15:41:15,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:15,129 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-10 15:41:15,129 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:15,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash -232669795, now seen corresponding path program 1 times [2018-10-10 15:41:15,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:15,719 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-10 15:41:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:16,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:16,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-10 15:41:16,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-10 15:41:16,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-10 15:41:16,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2018-10-10 15:41:16,088 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 18 states. [2018-10-10 15:41:16,963 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-10 15:41:17,346 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-10 15:41:17,675 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-10 15:41:17,865 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:41:18,083 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-10 15:41:18,550 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:41:18,872 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-10 15:41:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:19,429 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-10 15:41:19,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-10 15:41:19,430 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2018-10-10 15:41:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:19,433 INFO L225 Difference]: With dead ends: 124 [2018-10-10 15:41:19,433 INFO L226 Difference]: Without dead ends: 124 [2018-10-10 15:41:19,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2018-10-10 15:41:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-10 15:41:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2018-10-10 15:41:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-10 15:41:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-10 15:41:19,446 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 77 [2018-10-10 15:41:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:19,447 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-10 15:41:19,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-10 15:41:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-10 15:41:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-10 15:41:19,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:19,451 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:19,451 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:19,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash 650580105, now seen corresponding path program 2 times [2018-10-10 15:41:19,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:20,933 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-10-10 15:41:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:22,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:22,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:41:22,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:41:22,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:41:22,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:41:22,112 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 29 states. [2018-10-10 15:41:23,136 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-10 15:41:23,453 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-10 15:41:23,952 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-10-10 15:41:24,349 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-10 15:41:24,716 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-10-10 15:41:25,080 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-10 15:41:25,619 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2018-10-10 15:41:25,983 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-10 15:41:26,230 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-10 15:41:26,435 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:41:27,024 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:41:27,286 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:41:27,516 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-10 15:41:28,603 WARN L178 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-10 15:41:29,067 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-10 15:41:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:29,640 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-10 15:41:29,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-10 15:41:29,641 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 101 [2018-10-10 15:41:29,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:29,643 INFO L225 Difference]: With dead ends: 148 [2018-10-10 15:41:29,643 INFO L226 Difference]: Without dead ends: 148 [2018-10-10 15:41:29,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=614, Invalid=2926, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:41:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-10 15:41:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2018-10-10 15:41:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-10 15:41:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-10 15:41:29,659 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 101 [2018-10-10 15:41:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:29,660 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-10 15:41:29,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:41:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-10 15:41:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-10 15:41:29,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:29,662 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:41:29,663 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:29,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:29,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1369268085, now seen corresponding path program 3 times [2018-10-10 15:41:29,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:30,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:30,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-10 15:41:30,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-10 15:41:30,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-10 15:41:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2018-10-10 15:41:30,797 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 32 states. [2018-10-10 15:41:32,506 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-10 15:41:32,873 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-10 15:41:33,442 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-10 15:41:33,670 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:41:34,611 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-10 15:41:34,838 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:41:35,138 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-10 15:41:35,396 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-10 15:41:35,645 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-10 15:41:36,124 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-10 15:41:36,321 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:41:36,686 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-10 15:41:37,064 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-10 15:41:37,359 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-10 15:41:37,689 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-10-10 15:41:37,965 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2018-10-10 15:41:38,228 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2018-10-10 15:41:38,442 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-10 15:41:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:38,519 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-10 15:41:38,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-10 15:41:38,521 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 125 [2018-10-10 15:41:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:38,524 INFO L225 Difference]: With dead ends: 146 [2018-10-10 15:41:38,524 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:41:38,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=937, Invalid=4033, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 15:41:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:41:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:41:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:41:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:41:38,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2018-10-10 15:41:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:38,527 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:41:38,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-10 15:41:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:41:38,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:41:38,532 INFO L202 PluginConnector]: Adding new model openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:41:38 BoogieIcfgContainer [2018-10-10 15:41:38,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:41:38,535 INFO L168 Benchmark]: Toolchain (without parser) took 26681.79 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 320.3 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -265.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-10-10 15:41:38,537 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:41:38,537 INFO L168 Benchmark]: Boogie Preprocessor took 55.78 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:41:38,538 INFO L168 Benchmark]: RCFGBuilder took 602.65 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:41:38,539 INFO L168 Benchmark]: TraceAbstraction took 26019.28 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 320.3 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -297.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:41:38,546 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 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.78 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 602.65 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26019.28 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 320.3 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -297.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 145]: 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, 77 locations, 1 error locations. SAFE Result, 25.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 19.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 232 SDtfs, 3004 SDslu, 2302 SDs, 0 SdLazy, 3212 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 478204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/114 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/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-41-38-559.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-41-38-559.csv Received shutdown request...