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_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:50:27,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:50:27,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:50:27,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:50:27,762 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:50:27,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:50:27,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:50:27,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:50:27,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:50:27,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:50:27,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:50:27,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:50:27,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:50:27,779 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:50:27,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:50:27,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:50:27,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:50:27,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:50:27,797 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:50:27,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:50:27,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:50:27,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:50:27,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:50:27,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:50:27,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:50:27,811 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:50:27,811 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:50:27,812 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:50:27,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:50:27,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:50:27,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:50:27,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-14 16:50:27,817 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-14 16:50:27,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-14 16:50:27,819 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-14 16:50:27,819 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-14 16:50:27,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:50:27,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:50:27,831 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:50:27,832 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:50:27,832 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:50:27,832 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:50:27,832 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:50:27,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:50:27,833 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:50:27,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:50:27,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:50:27,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:50:27,834 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:50:27,834 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:50:27,835 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:50:27,835 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:50:27,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:50:27,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:50:27,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:50:27,923 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:50:27,923 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:50:27,924 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-14 16:50:27,925 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-14 16:50:27,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:50:27,998 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:50:27,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:50:27,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:50:27,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:50:28,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/1) ... [2018-10-14 16:50:28,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:50:28,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:50:28,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:50:28,059 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:50:28,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (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 [2018-10-14 16:50:28,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:50:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:50:28,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:50:28,899 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:50:28,900 INFO L202 PluginConnector]: Adding new model openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:28 BoogieIcfgContainer [2018-10-14 16:50:28,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:50:28,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:50:28,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:50:28,906 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:50:28,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:27" (1/2) ... [2018-10-14 16:50:28,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329bf5de and model type openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:28, skipping insertion in model container [2018-10-14 16:50:28,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:28" (2/2) ... [2018-10-14 16:50:28,909 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-14 16:50:28,920 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:50:28,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:50:28,949 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:50:28,985 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:50:28,986 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:50:28,986 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:50:28,987 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:50:28,987 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:50:28,987 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:50:28,987 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:50:28,987 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:50:28,987 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:50:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-10-14 16:50:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-14 16:50:29,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:29,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:29,045 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:29,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1190202453, now seen corresponding path program 1 times [2018-10-14 16:50:29,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:30,093 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-14 16:50:30,748 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-14 16:50:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:31,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:50:31,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-14 16:50:31,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:50:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:50:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:50:31,359 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 23 states. [2018-10-14 16:50:32,792 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-10-14 16:50:33,183 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-10-14 16:50:33,512 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-14 16:50:33,677 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-10-14 16:50:33,847 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-14 16:50:34,099 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-14 16:50:34,302 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-10-14 16:50:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:35,329 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-14 16:50:35,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:50:35,331 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2018-10-14 16:50:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:35,345 INFO L225 Difference]: With dead ends: 108 [2018-10-14 16:50:35,345 INFO L226 Difference]: Without dead ends: 108 [2018-10-14 16:50:35,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:50:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-14 16:50:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2018-10-14 16:50:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-14 16:50:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-14 16:50:35,415 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 83 [2018-10-14 16:50:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:35,416 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-14 16:50:35,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:50:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-14 16:50:35,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-14 16:50:35,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:35,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:35,421 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:35,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1341107908, now seen corresponding path program 1 times [2018-10-14 16:50:35,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:36,080 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-14 16:50:36,524 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-10-14 16:50:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:50:36,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:36,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:50:36,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:50:36,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:50:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:50:36,774 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 24 states. [2018-10-14 16:50:38,468 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-14 16:50:38,676 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-14 16:50:39,052 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-14 16:50:39,251 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-14 16:50:39,519 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-14 16:50:39,795 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-14 16:50:40,232 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-14 16:50:40,827 WARN L179 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2018-10-14 16:50:41,429 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-14 16:50:41,851 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2018-10-14 16:50:42,077 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-14 16:50:42,338 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-14 16:50:42,642 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-14 16:50:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:42,668 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-14 16:50:42,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:50:42,675 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2018-10-14 16:50:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:42,677 INFO L225 Difference]: With dead ends: 121 [2018-10-14 16:50:42,678 INFO L226 Difference]: Without dead ends: 121 [2018-10-14 16:50:42,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=464, Invalid=1516, Unknown=0, NotChecked=0, Total=1980 [2018-10-14 16:50:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-14 16:50:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2018-10-14 16:50:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-14 16:50:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-14 16:50:42,692 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 96 [2018-10-14 16:50:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:42,693 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-14 16:50:42,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:50:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-14 16:50:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-14 16:50:42,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:42,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:42,700 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:42,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:42,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1670203211, now seen corresponding path program 2 times [2018-10-14 16:50:42,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:50:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-14 16:50:43,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:50:43,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-14 16:50:43,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-14 16:50:43,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-14 16:50:43,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:50:43,365 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 22 states. [2018-10-14 16:50:45,890 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-10-14 16:50:46,157 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2018-10-14 16:50:46,463 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2018-10-14 16:50:46,688 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-14 16:50:47,064 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2018-10-14 16:50:47,435 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2018-10-14 16:50:47,769 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-14 16:50:48,027 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2018-10-14 16:50:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:50:48,182 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-14 16:50:48,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:50:48,182 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2018-10-14 16:50:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:50:48,184 INFO L225 Difference]: With dead ends: 108 [2018-10-14 16:50:48,184 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:50:48,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=547, Invalid=1345, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:50:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:50:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:50:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:50:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:50:48,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2018-10-14 16:50:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:50:48,187 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:50:48,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-14 16:50:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:50:48,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:50:48,192 INFO L202 PluginConnector]: Adding new model openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:50:48 BoogieIcfgContainer [2018-10-14 16:50:48,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:50:48,193 INFO L168 Benchmark]: Toolchain (without parser) took 20195.82 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 233.3 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -228.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2018-10-14 16:50:48,194 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-10-14 16:50:48,195 INFO L168 Benchmark]: Boogie Preprocessor took 58.86 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. [2018-10-14 16:50:48,196 INFO L168 Benchmark]: RCFGBuilder took 842.21 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. [2018-10-14 16:50:48,197 INFO L168 Benchmark]: TraceAbstraction took 19290.65 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 233.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -259.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:50:48,203 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 0.20 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 58.86 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 842.21 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 19290.65 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 233.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -259.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 182]: 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, 96 locations, 1 error locations. SAFE Result, 19.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 14.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 189 SDtfs, 2178 SDslu, 2150 SDs, 0 SdLazy, 1770 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 337799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/22 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_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-50-48-217.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-50-48-217.csv Received shutdown request...