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 0.1.23-502d2f4 [2018-10-12 21:08:18,503 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:08:18,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:08:18,516 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:08:18,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:08:18,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:08:18,519 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:08:18,521 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:08:18,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:08:18,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:08:18,524 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:08:18,525 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:08:18,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:08:18,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:08:18,528 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:08:18,529 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:08:18,529 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:08:18,531 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:08:18,533 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:08:18,535 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:08:18,536 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:08:18,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:08:18,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 21:08:18,556 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 21:08:18,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:08:18,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:08:18,567 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:08:18,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:08:18,567 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:08:18,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:08:18,568 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:08:18,568 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:08:18,568 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:08:18,568 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:08:18,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:08:18,569 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:08:18,569 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:08:18,570 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:08:18,570 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:08:18,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:08:18,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:08:18,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:08:18,651 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:08:18,652 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:08:18,652 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-12 21:08:18,653 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl' [2018-10-12 21:08:18,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:08:18,750 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:08:18,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:08:18,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:08:18,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:08:18,781 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,783 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,800 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,801 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,815 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,818 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,820 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 12.10 09:08:18" (1/1) ... [2018-10-12 21:08:18,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:08:18,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:08:18,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:08:18,831 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:08:18,832 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 12.10 09:08:18" (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 21:08:18,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:08:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:08:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:08:19,509 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:08:19,510 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 12.10 09:08:19 BoogieIcfgContainer [2018-10-12 21:08:19,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:08:19,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:08:19,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:08:19,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:08:19,514 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 12.10 09:08:18" (1/2) ... [2018-10-12 21:08:19,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12032514 and model type openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:08:19, skipping insertion in model container [2018-10-12 21:08:19,516 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 12.10 09:08:19" (2/2) ... [2018-10-12 21:08:19,518 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-12 21:08:19,527 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:08:19,536 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:08:19,553 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:08:19,582 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:08:19,583 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:08:19,583 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:08:19,583 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:08:19,584 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:08:19,584 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:08:19,584 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:08:19,584 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:08:19,584 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:08:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2018-10-12 21:08:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-12 21:08:19,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:19,616 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] [2018-10-12 21:08:19,617 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:19,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 333538993, now seen corresponding path program 1 times [2018-10-12 21:08:19,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:20,434 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 21:08:20,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:08:20,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 21:08:20,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 21:08:20,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 21:08:20,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-12 21:08:20,462 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 11 states. [2018-10-12 21:08:21,221 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-12 21:08:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:21,588 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-12 21:08:21,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 21:08:21,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2018-10-12 21:08:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:21,604 INFO L225 Difference]: With dead ends: 100 [2018-10-12 21:08:21,605 INFO L226 Difference]: Without dead ends: 100 [2018-10-12 21:08:21,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-12 21:08:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-12 21:08:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2018-10-12 21:08:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-12 21:08:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-12 21:08:21,654 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 53 [2018-10-12 21:08:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:21,655 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-12 21:08:21,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 21:08:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-12 21:08:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-12 21:08:21,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:21,660 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] [2018-10-12 21:08:21,661 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:21,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash -232669795, now seen corresponding path program 1 times [2018-10-12 21:08:21,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:22,231 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-12 21:08:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:22,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:22,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-12 21:08:22,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-12 21:08:22,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-12 21:08:22,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2018-10-12 21:08:22,610 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 18 states. [2018-10-12 21:08:23,419 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-12 21:08:23,727 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-12 21:08:24,038 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-12 21:08:24,214 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 21:08:24,414 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-12 21:08:24,852 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-12 21:08:25,212 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-12 21:08:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:25,743 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-12 21:08:25,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-12 21:08:25,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2018-10-12 21:08:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:25,746 INFO L225 Difference]: With dead ends: 124 [2018-10-12 21:08:25,747 INFO L226 Difference]: Without dead ends: 124 [2018-10-12 21:08:25,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2018-10-12 21:08:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-12 21:08:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2018-10-12 21:08:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-12 21:08:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-12 21:08:25,759 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 77 [2018-10-12 21:08:25,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:25,760 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-12 21:08:25,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-12 21:08:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-12 21:08:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-12 21:08:25,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:25,764 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] [2018-10-12 21:08:25,765 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:25,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:25,765 INFO L82 PathProgramCache]: Analyzing trace with hash 650580105, now seen corresponding path program 2 times [2018-10-12 21:08:25,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:26,451 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-10-12 21:08:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:27,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:27,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 21:08:27,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 21:08:27,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 21:08:27,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2018-10-12 21:08:27,458 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 29 states. [2018-10-12 21:08:28,461 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-12 21:08:28,779 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-12 21:08:29,303 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-10-12 21:08:29,688 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-12 21:08:30,087 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-10-12 21:08:30,462 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-12 21:08:30,972 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2018-10-12 21:08:31,333 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-12 21:08:31,585 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-12 21:08:31,792 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:08:32,273 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 21:08:32,523 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:08:32,748 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-12 21:08:33,697 WARN L178 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-12 21:08:34,163 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-12 21:08:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:34,726 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-12 21:08:34,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-12 21:08:34,726 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 101 [2018-10-12 21:08:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:34,729 INFO L225 Difference]: With dead ends: 148 [2018-10-12 21:08:34,729 INFO L226 Difference]: Without dead ends: 148 [2018-10-12 21:08:34,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=614, Invalid=2926, Unknown=0, NotChecked=0, Total=3540 [2018-10-12 21:08:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-12 21:08:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2018-10-12 21:08:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-12 21:08:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-12 21:08:34,745 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 101 [2018-10-12 21:08:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:34,746 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-12 21:08:34,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 21:08:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-12 21:08:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-12 21:08:34,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:34,748 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] [2018-10-12 21:08:34,748 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:34,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1369268085, now seen corresponding path program 3 times [2018-10-12 21:08:34,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:36,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:36,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-12 21:08:36,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-12 21:08:36,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-12 21:08:36,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2018-10-12 21:08:36,088 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 32 states. [2018-10-12 21:08:37,473 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-12 21:08:37,897 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:08:38,077 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:08:38,442 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-12 21:08:38,655 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-12 21:08:39,563 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-12 21:08:39,790 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-12 21:08:40,097 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-12 21:08:40,430 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-12 21:08:40,676 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-12 21:08:41,157 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-12 21:08:41,332 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 21:08:41,670 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2018-10-12 21:08:41,997 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-12 21:08:42,272 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 21:08:42,552 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-10-12 21:08:42,798 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2018-10-12 21:08:43,033 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2018-10-12 21:08:43,268 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-12 21:08:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:43,345 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-12 21:08:43,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-12 21:08:43,346 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 125 [2018-10-12 21:08:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:43,347 INFO L225 Difference]: With dead ends: 146 [2018-10-12 21:08:43,348 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:08:43,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=937, Invalid=4033, Unknown=0, NotChecked=0, Total=4970 [2018-10-12 21:08:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:08:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:08:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:08:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:08:43,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2018-10-12 21:08:43,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:43,352 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:08:43,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-12 21:08:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:08:43,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:08:43,357 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 12.10 09:08:43 BoogieIcfgContainer [2018-10-12 21:08:43,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:08:43,358 INFO L168 Benchmark]: Toolchain (without parser) took 24609.54 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 226.5 MB). Free memory was 1.5 GB in the beginning and 921.9 MB in the end (delta: 539.0 MB). Peak memory consumption was 765.5 MB. Max. memory is 7.1 GB. [2018-10-12 21:08:43,360 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 21:08:43,360 INFO L168 Benchmark]: Boogie Preprocessor took 78.91 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 21:08:43,361 INFO L168 Benchmark]: RCFGBuilder took 679.55 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:08:43,362 INFO L168 Benchmark]: TraceAbstraction took 23846.71 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 226.5 MB). Free memory was 1.4 GB in the beginning and 921.9 MB in the end (delta: 507.3 MB). Peak memory consumption was 733.8 MB. Max. memory is 7.1 GB. [2018-10-12 21:08:43,366 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 0.23 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 78.91 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 679.55 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23846.71 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 226.5 MB). Free memory was 1.4 GB in the beginning and 921.9 MB in the end (delta: 507.3 MB). Peak memory consumption was 733.8 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, 23.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 18.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 232 SDtfs, 3004 SDslu, 2302 SDs, 0 SdLazy, 3212 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 17.4s 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, 4.3s 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-0-2018-10-12_21-08-43-377.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-0-2018-10-12_21-08-43-377.csv Received shutdown request...