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 0.1.23-502d2f4 [2018-10-12 21:10:23,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:10:23,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:10:23,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:10:23,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:10:23,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:10:23,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:10:23,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:10:23,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:10:23,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:10:23,652 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:10:23,652 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:10:23,653 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:10:23,654 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:10:23,655 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:10:23,656 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:10:23,657 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:10:23,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:10:23,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:10:23,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:10:23,667 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:10:23,668 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:10:23,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 21:10:23,689 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:10:23,703 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:10:23,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:10:23,704 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:10:23,705 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:10:23,705 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:10:23,705 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:10:23,706 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:10:23,706 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:10:23,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:10:23,707 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:10:23,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:10:23,707 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:10:23,707 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:10:23,708 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:10:23,708 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:10:23,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:10:23,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:10:23,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:10:23,786 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:10:23,787 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:10:23,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 21:10:23,788 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-12 21:10:23,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:10:23,893 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:10:23,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:10:23,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:10:23,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:10:23,923 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,925 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,944 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,945 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,954 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,962 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,964 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 12.10 09:10:23" (1/1) ... [2018-10-12 21:10:23,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:10:23,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:10:23,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:10:23,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:10:23,977 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 12.10 09:10:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:10:24,041 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:10:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:10:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:10:24,644 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:10:24,645 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 12.10 09:10:24 BoogieIcfgContainer [2018-10-12 21:10:24,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:10:24,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:10:24,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:10:24,651 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:10:24,651 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 12.10 09:10:23" (1/2) ... [2018-10-12 21:10:24,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435d66ee and model type openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:24, skipping insertion in model container [2018-10-12 21:10:24,653 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 12.10 09:10:24" (2/2) ... [2018-10-12 21:10:24,655 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrstr-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-12 21:10:24,666 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:10:24,676 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:10:24,694 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:10:24,726 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:10:24,727 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:10:24,727 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:10:24,727 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:10:24,727 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:10:24,728 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:10:24,728 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:10:24,728 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:10:24,728 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:10:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-10-12 21:10:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-12 21:10:24,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:24,759 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] [2018-10-12 21:10:24,761 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:24,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:24,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1190202453, now seen corresponding path program 1 times [2018-10-12 21:10:24,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:26,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:10:26,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-10-12 21:10:26,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-12 21:10:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-12 21:10:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2018-10-12 21:10:26,948 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 23 states. [2018-10-12 21:10:27,936 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-12 21:10:28,458 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-10-12 21:10:28,931 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-10-12 21:10:29,093 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:10:29,297 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-12 21:10:29,457 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-10-12 21:10:29,663 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 21:10:29,875 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-12 21:10:30,072 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-10-12 21:10:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:31,070 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-12 21:10:31,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-12 21:10:31,072 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2018-10-12 21:10:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:31,087 INFO L225 Difference]: With dead ends: 108 [2018-10-12 21:10:31,087 INFO L226 Difference]: Without dead ends: 108 [2018-10-12 21:10:31,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 21:10:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-12 21:10:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2018-10-12 21:10:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-12 21:10:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-12 21:10:31,159 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 83 [2018-10-12 21:10:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:31,160 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-12 21:10:31,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-12 21:10:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-12 21:10:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-12 21:10:31,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:31,167 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] [2018-10-12 21:10:31,168 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:31,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1341107908, now seen corresponding path program 1 times [2018-10-12 21:10:31,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:31,849 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-12 21:10:32,298 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-10-12 21:10:32,539 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 21:10:32,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:32,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-12 21:10:32,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-12 21:10:32,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-12 21:10:32,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2018-10-12 21:10:32,543 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 24 states. [2018-10-12 21:10:34,308 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 21:10:34,496 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 21:10:34,868 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-12 21:10:35,067 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-12 21:10:35,283 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-10-12 21:10:35,527 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-10-12 21:10:35,969 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2018-10-12 21:10:36,568 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2018-10-12 21:10:37,157 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2018-10-12 21:10:37,592 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2018-10-12 21:10:37,799 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-12 21:10:38,108 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-10-12 21:10:38,433 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-10-12 21:10:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:38,459 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-12 21:10:38,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-12 21:10:38,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2018-10-12 21:10:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:38,470 INFO L225 Difference]: With dead ends: 121 [2018-10-12 21:10:38,473 INFO L226 Difference]: Without dead ends: 121 [2018-10-12 21:10:38,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=464, Invalid=1516, Unknown=0, NotChecked=0, Total=1980 [2018-10-12 21:10:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-12 21:10:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2018-10-12 21:10:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-12 21:10:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-12 21:10:38,485 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 96 [2018-10-12 21:10:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:38,486 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-12 21:10:38,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-12 21:10:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-12 21:10:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-12 21:10:38,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:38,489 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] [2018-10-12 21:10:38,489 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:38,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1670203211, now seen corresponding path program 2 times [2018-10-12 21:10:38,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-12 21:10:39,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:39,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 21:10:39,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 21:10:39,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 21:10:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:10:39,353 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 22 states. [2018-10-12 21:10:42,074 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-10-12 21:10:42,323 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2018-10-12 21:10:42,632 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2018-10-12 21:10:42,852 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-12 21:10:43,283 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2018-10-12 21:10:43,610 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2018-10-12 21:10:43,918 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2018-10-12 21:10:44,164 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2018-10-12 21:10:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:44,295 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-12 21:10:44,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 21:10:44,296 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2018-10-12 21:10:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:44,298 INFO L225 Difference]: With dead ends: 108 [2018-10-12 21:10:44,298 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:10:44,301 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 [2018-10-12 21:10:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:10:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:10:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:10:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:10:44,302 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2018-10-12 21:10:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:44,303 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:10:44,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 21:10:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:10:44,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:10:44,309 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 12.10 09:10:44 BoogieIcfgContainer [2018-10-12 21:10:44,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:10:44,310 INFO L168 Benchmark]: Toolchain (without parser) took 20418.01 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 190.3 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -140.6 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:10:44,311 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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 21:10:44,312 INFO L168 Benchmark]: Boogie Preprocessor took 78.29 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 21:10:44,312 INFO L168 Benchmark]: RCFGBuilder took 673.11 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 21:10:44,313 INFO L168 Benchmark]: TraceAbstraction took 19662.53 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 190.3 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -172.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2018-10-12 21:10:44,317 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 0.25 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 78.29 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 673.11 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 19662.53 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 190.3 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -172.3 MB). Peak memory consumption was 18.0 MB. 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, 19.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 15.0s 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, 14.2s 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, 4.0s 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-0-2018-10-12_21-10-44-329.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-0-2018-10-12_21-10-44-329.csv Received shutdown request...