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_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:09:45,069 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:09:45,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:09:45,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:09:45,085 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:09:45,086 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:09:45,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:09:45,089 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:09:45,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:09:45,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:09:45,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:09:45,093 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:09:45,094 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:09:45,095 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:09:45,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:09:45,097 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:09:45,098 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:09:45,100 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:09:45,102 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:09:45,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:09:45,106 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:09:45,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:09:45,110 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 21:09:45,110 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 21:09:45,110 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 21:09:45,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 21:09:45,113 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 21:09:45,114 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 21:09:45,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 21:09:45,116 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 21:09:45,116 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 21:09:45,117 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-12 21:09:45,119 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 21:09:45,130 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:09:45,130 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:09:45,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:09:45,132 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:09:45,132 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:09:45,132 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:09:45,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:09:45,133 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:09:45,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:09:45,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:09:45,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:09:45,134 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:09:45,134 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:09:45,135 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:09:45,135 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:09:45,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:09:45,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:09:45,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:09:45,209 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:09:45,209 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:09:45,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-12 21:09:45,210 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl' [2018-10-12 21:09:45,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:09:45,294 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:09:45,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:09:45,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:09:45,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:09:45,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/1) ... [2018-10-12 21:09:45,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:09:45,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:09:45,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:09:45,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:09:45,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (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 21:09:45,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:09:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:09:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:09:45,973 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:09:45,974 INFO L202 PluginConnector]: Adding new model openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:45 BoogieIcfgContainer [2018-10-12 21:09:45,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:09:45,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:09:45,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:09:45,979 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:09:45,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:09:45" (1/2) ... [2018-10-12 21:09:45,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c3caa5 and model type openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:09:45, skipping insertion in model container [2018-10-12 21:09:45,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:09:45" (2/2) ... [2018-10-12 21:09:45,983 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-12 21:09:45,992 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:09:46,001 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:09:46,017 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:09:46,046 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:09:46,047 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:09:46,047 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:09:46,047 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:09:46,047 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:09:46,047 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:09:46,048 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:09:46,048 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:09:46,048 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:09:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-10-12 21:09:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-12 21:09:46,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:46,076 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] [2018-10-12 21:09:46,077 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:46,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash -355787775, now seen corresponding path program 1 times [2018-10-12 21:09:46,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:46,890 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 21:09:46,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:09:46,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-12 21:09:46,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 21:09:46,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 21:09:46,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-12 21:09:46,917 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 12 states. [2018-10-12 21:09:47,172 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-12 21:09:47,827 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-12 21:09:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:48,113 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-12 21:09:48,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 21:09:48,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2018-10-12 21:09:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:48,130 INFO L225 Difference]: With dead ends: 63 [2018-10-12 21:09:48,131 INFO L226 Difference]: Without dead ends: 63 [2018-10-12 21:09:48,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:09:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-12 21:09:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2018-10-12 21:09:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-12 21:09:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-12 21:09:48,176 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 38 [2018-10-12 21:09:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:48,177 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-12 21:09:48,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 21:09:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-12 21:09:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-12 21:09:48,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:48,179 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] [2018-10-12 21:09:48,180 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:48,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1419982805, now seen corresponding path program 1 times [2018-10-12 21:09:48,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:48,714 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-12 21:09:49,086 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 21:09:49,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:49,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 21:09:49,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 21:09:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 21:09:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2018-10-12 21:09:49,091 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 19 states. [2018-10-12 21:09:50,672 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-10-12 21:09:50,994 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:09:51,360 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-12 21:09:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:51,702 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-12 21:09:51,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-12 21:09:51,703 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2018-10-12 21:09:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:51,705 INFO L225 Difference]: With dead ends: 76 [2018-10-12 21:09:51,705 INFO L226 Difference]: Without dead ends: 76 [2018-10-12 21:09:51,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2018-10-12 21:09:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-12 21:09:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2018-10-12 21:09:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-12 21:09:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-12 21:09:51,716 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 51 [2018-10-12 21:09:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:51,717 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-12 21:09:51,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 21:09:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-12 21:09:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-12 21:09:51,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:51,720 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:51,720 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:51,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 809873473, now seen corresponding path program 2 times [2018-10-12 21:09:51,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:52,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:52,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-12 21:09:52,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-12 21:09:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-12 21:09:52,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2018-10-12 21:09:52,694 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 20 states. [2018-10-12 21:09:53,524 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-10-12 21:09:53,863 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:09:54,200 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 21:09:54,526 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-12 21:09:54,913 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2018-10-12 21:09:55,301 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2018-10-12 21:09:55,656 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2018-10-12 21:09:55,891 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2018-10-12 21:09:56,214 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 21:09:56,480 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-10-12 21:09:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:56,510 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-12 21:09:56,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-12 21:09:56,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-10-12 21:09:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:56,516 INFO L225 Difference]: With dead ends: 89 [2018-10-12 21:09:56,516 INFO L226 Difference]: Without dead ends: 89 [2018-10-12 21:09:56,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2018-10-12 21:09:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-12 21:09:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2018-10-12 21:09:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-12 21:09:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-12 21:09:56,525 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 64 [2018-10-12 21:09:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:56,526 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-12 21:09:56,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-12 21:09:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-12 21:09:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-12 21:09:56,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:56,528 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-10-12 21:09:56,528 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:56,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:56,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1277500395, now seen corresponding path program 3 times [2018-10-12 21:09:56,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:57,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:57,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-12 21:09:57,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-12 21:09:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-12 21:09:57,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2018-10-12 21:09:57,157 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 21 states. [2018-10-12 21:09:58,879 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2018-10-12 21:09:59,068 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-12 21:09:59,405 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2018-10-12 21:09:59,638 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-12 21:09:59,948 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-12 21:10:00,176 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 21:10:00,439 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2018-10-12 21:10:00,713 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2018-10-12 21:10:01,117 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2018-10-12 21:10:01,575 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 21:10:01,810 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-12 21:10:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:01,819 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-12 21:10:01,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-12 21:10:01,820 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 77 [2018-10-12 21:10:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:01,821 INFO L225 Difference]: With dead ends: 87 [2018-10-12 21:10:01,821 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:10:01,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=501, Invalid=1221, Unknown=0, NotChecked=0, Total=1722 [2018-10-12 21:10:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:10:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:10:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:10:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:10:01,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2018-10-12 21:10:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:01,824 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:10:01,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-12 21:10:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:10:01,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:10:01,829 INFO L202 PluginConnector]: Adding new model openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:10:01 BoogieIcfgContainer [2018-10-12 21:10:01,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:10:01,830 INFO L168 Benchmark]: Toolchain (without parser) took 16537.59 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 110.6 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 317.4 MB). Peak memory consumption was 428.1 MB. Max. memory is 7.1 GB. [2018-10-12 21:10:01,832 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 21:10:01,832 INFO L168 Benchmark]: Boogie Preprocessor took 70.60 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 21:10:01,833 INFO L168 Benchmark]: RCFGBuilder took 607.93 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 21:10:01,834 INFO L168 Benchmark]: TraceAbstraction took 15854.04 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 110.6 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 296.3 MB). Peak memory consumption was 406.9 MB. Max. memory is 7.1 GB. [2018-10-12 21:10:01,837 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 0.19 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 70.60 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 607.93 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 15854.04 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 110.6 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 296.3 MB). Peak memory consumption was 406.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: 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, 51 locations, 1 error locations. SAFE Result, 15.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 12.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 1874 SDslu, 1050 SDs, 0 SdLazy, 1260 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred 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, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 187918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 2/70 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_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-10-01-848.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-10-01-848.csv Received shutdown request...