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_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:42:11,115 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:42:11,117 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:42:11,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:42:11,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:42:11,130 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:42:11,131 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:42:11,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:42:11,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:42:11,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:42:11,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:42:11,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:42:11,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:42:11,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:42:11,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:42:11,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:42:11,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:42:11,145 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:42:11,150 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:42:11,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:42:11,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:42:11,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:42:11,161 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:42:11,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:42:11,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:42:11,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:42:11,185 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:42:11,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:42:11,186 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:42:11,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:42:11,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:42:11,187 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:42:11,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:42:11,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:42:11,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:42:11,188 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:42:11,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:42:11,189 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:42:11,189 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:42:11,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:42:11,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:42:11,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:42:11,265 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:42:11,266 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:42:11,266 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-10 15:42:11,267 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl' [2018-10-10 15:42:11,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:42:11,342 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:42:11,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:42:11,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:42:11,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:42:11,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... [2018-10-10 15:42:11,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:42:11,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:42:11,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:42:11,395 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:42:11,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:42:11,474 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:42:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:42:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:42:12,198 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:42:12,199 INFO L202 PluginConnector]: Adding new model openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:12 BoogieIcfgContainer [2018-10-10 15:42:12,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:42:12,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:42:12,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:42:12,204 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:42:12,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:11" (1/2) ... [2018-10-10 15:42:12,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e3d1f8 and model type openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:42:12, skipping insertion in model container [2018-10-10 15:42:12,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:12" (2/2) ... [2018-10-10 15:42:12,207 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl [2018-10-10 15:42:12,218 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:42:12,227 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:42:12,245 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:42:12,274 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:42:12,275 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:42:12,275 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:42:12,275 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:42:12,275 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:42:12,276 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:42:12,276 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:42:12,276 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:42:12,276 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:42:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-10-10 15:42:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-10 15:42:12,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:12,308 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] [2018-10-10 15:42:12,309 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:12,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1748847124, now seen corresponding path program 1 times [2018-10-10 15:42:12,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:13,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:42:13,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:42:13,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:42:13,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:42:13,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:42:13,161 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 11 states. [2018-10-10 15:42:14,234 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-10 15:42:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:14,556 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-10 15:42:14,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:42:14,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2018-10-10 15:42:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:14,572 INFO L225 Difference]: With dead ends: 101 [2018-10-10 15:42:14,572 INFO L226 Difference]: Without dead ends: 101 [2018-10-10 15:42:14,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:42:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-10 15:42:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2018-10-10 15:42:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-10 15:42:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-10 15:42:14,618 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 54 [2018-10-10 15:42:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:14,619 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-10 15:42:14,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:42:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-10 15:42:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-10 15:42:14,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:14,623 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] [2018-10-10 15:42:14,623 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:14,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash 197745024, now seen corresponding path program 1 times [2018-10-10 15:42:14,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:15,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:15,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-10 15:42:15,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-10 15:42:15,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-10 15:42:15,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2018-10-10 15:42:15,548 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 18 states. [2018-10-10 15:42:16,387 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-10 15:42:16,692 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-10 15:42:16,972 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-10-10 15:42:17,426 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:42:17,627 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-10 15:42:18,088 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:42:18,383 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-10 15:42:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:18,903 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-10 15:42:18,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-10 15:42:18,904 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2018-10-10 15:42:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:18,906 INFO L225 Difference]: With dead ends: 125 [2018-10-10 15:42:18,907 INFO L226 Difference]: Without dead ends: 125 [2018-10-10 15:42:18,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2018-10-10 15:42:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-10 15:42:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2018-10-10 15:42:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-10 15:42:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-10 15:42:18,920 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 78 [2018-10-10 15:42:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:18,921 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-10 15:42:18,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-10 15:42:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-10 15:42:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-10 15:42:18,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:18,925 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:18,926 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:18,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:18,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1681450220, now seen corresponding path program 2 times [2018-10-10 15:42:18,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:19,751 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-10-10 15:42:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:20,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:20,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:42:20,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:42:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:42:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:42:20,738 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 29 states. [2018-10-10 15:42:21,808 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-10 15:42:22,329 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-10 15:42:22,632 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-10-10 15:42:23,056 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-10 15:42:23,441 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-10-10 15:42:23,802 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-10 15:42:24,348 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2018-10-10 15:42:24,742 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2018-10-10 15:42:24,987 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-10 15:42:25,174 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:42:25,643 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:42:25,898 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:42:26,129 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-10 15:42:27,139 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-10 15:42:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:27,661 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-10 15:42:27,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-10 15:42:27,661 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 102 [2018-10-10 15:42:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:27,663 INFO L225 Difference]: With dead ends: 149 [2018-10-10 15:42:27,663 INFO L226 Difference]: Without dead ends: 149 [2018-10-10 15:42:27,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=614, Invalid=2926, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:42:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-10 15:42:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 127. [2018-10-10 15:42:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-10 15:42:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-10 15:42:27,678 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 102 [2018-10-10 15:42:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:27,679 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-10 15:42:27,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:42:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-10 15:42:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-10 15:42:27,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:27,681 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:42:27,682 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:27,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 500690008, now seen corresponding path program 3 times [2018-10-10 15:42:27,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:29,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:29,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-10 15:42:29,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-10 15:42:29,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-10 15:42:29,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=982, Unknown=0, NotChecked=0, Total=1056 [2018-10-10 15:42:29,163 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-10-10 15:42:30,722 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-10-10 15:42:31,191 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-10 15:42:32,150 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-10 15:42:32,624 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-10 15:42:32,869 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-10 15:42:33,228 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-10 15:42:33,622 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2018-10-10 15:42:33,881 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2018-10-10 15:42:34,364 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-10 15:42:34,543 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:42:34,825 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2018-10-10 15:42:35,150 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2018-10-10 15:42:35,445 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2018-10-10 15:42:35,758 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:42:36,024 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-10-10 15:42:36,229 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2018-10-10 15:42:36,433 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-10 15:42:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:36,480 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-10 15:42:36,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-10 15:42:36,481 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-10 15:42:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:36,482 INFO L225 Difference]: With dead ends: 147 [2018-10-10 15:42:36,483 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:42:36,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=972, Invalid=4284, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 15:42:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:42:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:42:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:42:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:42:36,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2018-10-10 15:42:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:36,486 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:42:36,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-10 15:42:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:42:36,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:42:36,491 INFO L202 PluginConnector]: Adding new model openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:42:36 BoogieIcfgContainer [2018-10-10 15:42:36,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:42:36,493 INFO L168 Benchmark]: Toolchain (without parser) took 25151.06 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 353.4 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -295.3 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:42:36,494 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. [2018-10-10 15:42:36,494 INFO L168 Benchmark]: Boogie Preprocessor took 51.46 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. [2018-10-10 15:42:36,495 INFO L168 Benchmark]: RCFGBuilder took 803.99 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. [2018-10-10 15:42:36,496 INFO L168 Benchmark]: TraceAbstraction took 24291.60 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 353.4 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -327.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-10 15:42:36,500 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 51.46 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 803.99 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 24291.60 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 353.4 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -327.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 148]: 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, 78 locations, 1 error locations. SAFE Result, 24.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 19.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 234 SDtfs, 2947 SDslu, 2306 SDs, 0 SdLazy, 3225 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 491987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-42-36-510.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcpy-alloca_true-valid-memsafety_true-termination.i_8.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-42-36-510.csv Received shutdown request...