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/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:59:20,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:59:20,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:59:20,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:59:20,050 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:59:20,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:59:20,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:59:20,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:59:20,055 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:59:20,056 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:59:20,057 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:59:20,057 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:59:20,058 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:59:20,059 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:59:20,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:59:20,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:59:20,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:59:20,064 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:59:20,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:59:20,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:59:20,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:59:20,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:59:20,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:59:20,083 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 20:59:20,100 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:59:20,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:59:20,103 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:59:20,103 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:59:20,103 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:59:20,103 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:59:20,104 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:59:20,104 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:59:20,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:59:20,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:59:20,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:59:20,105 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:59:20,105 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:59:20,106 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:59:20,106 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:59:20,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:59:20,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:59:20,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:59:20,182 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:59:20,183 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:59:20,184 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl [2018-10-12 20:59:20,184 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl' [2018-10-12 20:59:20,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:59:20,248 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:59:20,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:59:20,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:59:20,249 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:59:20,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/1) ... [2018-10-12 20:59:20,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:59:20,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:59:20,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:59:20,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:59:20,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (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 20:59:20,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:59:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:59:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:59:20,839 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:59:20,839 INFO L202 PluginConnector]: Adding new model cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:59:20 BoogieIcfgContainer [2018-10-12 20:59:20,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:59:20,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:59:20,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:59:20,845 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:59:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:59:20" (1/2) ... [2018-10-12 20:59:20,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103763c0 and model type cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:59:20, skipping insertion in model container [2018-10-12 20:59:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:59:20" (2/2) ... [2018-10-12 20:59:20,848 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl [2018-10-12 20:59:20,858 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:59:20,867 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:59:20,887 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:59:20,920 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:59:20,921 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:59:20,921 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:59:20,922 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:59:20,922 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:59:20,922 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:59:20,922 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:59:20,922 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:59:20,922 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:59:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-10-12 20:59:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-12 20:59:20,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:20,951 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] [2018-10-12 20:59:20,952 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:20,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:20,959 INFO L82 PathProgramCache]: Analyzing trace with hash -288541794, now seen corresponding path program 1 times [2018-10-12 20:59:21,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:21,935 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 20:59:21,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:59:21,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-12 20:59:21,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 20:59:21,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 20:59:21,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:59:21,964 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 12 states. [2018-10-12 20:59:22,913 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-12 20:59:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:23,224 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-12 20:59:23,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 20:59:23,226 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2018-10-12 20:59:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:23,239 INFO L225 Difference]: With dead ends: 62 [2018-10-12 20:59:23,239 INFO L226 Difference]: Without dead ends: 62 [2018-10-12 20:59:23,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-10-12 20:59:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-12 20:59:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2018-10-12 20:59:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-12 20:59:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-12 20:59:23,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 37 [2018-10-12 20:59:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:23,285 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-12 20:59:23,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 20:59:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-12 20:59:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-12 20:59:23,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:23,287 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] [2018-10-12 20:59:23,288 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:23,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2055907437, now seen corresponding path program 1 times [2018-10-12 20:59:23,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:23,792 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-12 20:59:24,275 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 20:59:24,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:24,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-12 20:59:24,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-12 20:59:24,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-12 20:59:24,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-10-12 20:59:24,279 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 20 states. [2018-10-12 20:59:25,729 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-10-12 20:59:26,048 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 20:59:26,411 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-10-12 20:59:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:26,965 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-12 20:59:26,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-12 20:59:26,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-10-12 20:59:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:26,967 INFO L225 Difference]: With dead ends: 75 [2018-10-12 20:59:26,967 INFO L226 Difference]: Without dead ends: 75 [2018-10-12 20:59:26,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2018-10-12 20:59:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-12 20:59:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2018-10-12 20:59:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-12 20:59:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-12 20:59:26,977 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2018-10-12 20:59:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:26,978 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-12 20:59:26,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-12 20:59:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-12 20:59:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-12 20:59:26,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:26,981 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] [2018-10-12 20:59:26,981 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:26,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash -878724098, now seen corresponding path program 2 times [2018-10-12 20:59:26,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:28,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:28,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 20:59:28,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 20:59:28,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 20:59:28,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2018-10-12 20:59:28,076 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 22 states. [2018-10-12 20:59:28,372 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-12 20:59:29,231 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-12 20:59:29,466 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-12 20:59:29,740 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-12 20:59:29,936 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-12 20:59:30,260 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-10-12 20:59:30,579 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2018-10-12 20:59:30,933 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2018-10-12 20:59:31,294 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2018-10-12 20:59:31,550 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2018-10-12 20:59:31,822 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-10-12 20:59:31,995 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-12 20:59:32,233 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-12 20:59:32,439 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-12 20:59:32,820 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-10-12 20:59:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:32,956 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-12 20:59:32,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-12 20:59:32,956 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 63 [2018-10-12 20:59:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:32,958 INFO L225 Difference]: With dead ends: 88 [2018-10-12 20:59:32,958 INFO L226 Difference]: Without dead ends: 88 [2018-10-12 20:59:32,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=440, Invalid=1366, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 20:59:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-12 20:59:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2018-10-12 20:59:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-12 20:59:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-12 20:59:32,976 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 63 [2018-10-12 20:59:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:32,978 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-12 20:59:32,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 20:59:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-12 20:59:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-12 20:59:32,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:59:32,984 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:59:32,984 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:59:32,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:59:32,984 INFO L82 PathProgramCache]: Analyzing trace with hash 155237389, now seen corresponding path program 3 times [2018-10-12 20:59:32,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:59:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:59:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:59:33,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:59:33,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-12 20:59:33,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-12 20:59:33,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-12 20:59:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2018-10-12 20:59:33,727 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 24 states. [2018-10-12 20:59:35,978 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2018-10-12 20:59:36,242 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-10-12 20:59:36,485 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-12 20:59:36,736 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2018-10-12 20:59:37,016 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 20:59:37,673 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-12 20:59:37,851 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2018-10-12 20:59:38,083 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-12 20:59:38,395 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-12 20:59:38,705 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2018-10-12 20:59:38,951 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-12 20:59:39,207 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2018-10-12 20:59:39,442 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-12 20:59:39,638 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-12 20:59:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:59:39,645 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-12 20:59:39,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-12 20:59:39,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 76 [2018-10-12 20:59:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:59:39,647 INFO L225 Difference]: With dead ends: 86 [2018-10-12 20:59:39,647 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:59:39,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=736, Invalid=2020, Unknown=0, NotChecked=0, Total=2756 [2018-10-12 20:59:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:59:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:59:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:59:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:59:39,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2018-10-12 20:59:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:59:39,651 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:59:39,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-12 20:59:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:59:39,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:59:39,657 INFO L202 PluginConnector]: Adding new model cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:59:39 BoogieIcfgContainer [2018-10-12 20:59:39,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:59:39,658 INFO L168 Benchmark]: Toolchain (without parser) took 19411.60 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.6 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -134.2 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2018-10-12 20:59:39,660 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. [2018-10-12 20:59:39,660 INFO L168 Benchmark]: Boogie Preprocessor took 51.99 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 20:59:39,661 INFO L168 Benchmark]: RCFGBuilder took 538.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-12 20:59:39,662 INFO L168 Benchmark]: TraceAbstraction took 18816.39 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.6 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -155.4 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2018-10-12 20:59:39,665 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 51.99 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 538.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18816.39 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.6 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -155.4 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 106]: 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, 50 locations, 1 error locations. SAFE Result, 18.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 14.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 1886 SDslu, 1232 SDs, 0 SdLazy, 1503 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 181290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 2/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-59-39-676.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_6.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-59-39-676.csv Received shutdown request...