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_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:43:01,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:43:01,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:43:01,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:43:01,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:43:01,959 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:43:01,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:43:01,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:43:01,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:43:01,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:43:01,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:43:01,994 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 15:43:02,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:43:02,011 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:43:02,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:43:02,012 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:43:02,012 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:43:02,012 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:43:02,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:43:02,013 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:43:02,013 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:43:02,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:43:02,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:43:02,014 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:43:02,014 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:43:02,015 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:43:02,015 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:43:02,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:43:02,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:43:02,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:43:02,089 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:43:02,090 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:43:02,091 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:43:02,091 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl' [2018-10-10 15:43:02,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:43:02,171 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:43:02,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:43:02,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:43:02,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:43:02,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/1) ... [2018-10-10 15:43:02,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:43:02,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:43:02,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:43:02,255 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:43:02,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (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 15:43:02,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:43:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:43:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:43:02,977 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:43:02,978 INFO L202 PluginConnector]: Adding new model openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:02 BoogieIcfgContainer [2018-10-10 15:43:02,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:43:02,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:43:02,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:43:02,983 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:43:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:43:02" (1/2) ... [2018-10-10 15:43:02,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f44a125 and model type openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:43:02, skipping insertion in model container [2018-10-10 15:43:02,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:43:02" (2/2) ... [2018-10-10 15:43:02,987 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl [2018-10-10 15:43:02,997 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:43:03,008 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:43:03,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:43:03,054 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:43:03,055 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:43:03,055 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:43:03,055 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:43:03,056 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:43:03,056 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:43:03,056 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:43:03,056 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:43:03,056 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:43:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2018-10-10 15:43:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:43:03,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:03,089 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] [2018-10-10 15:43:03,090 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:03,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1957752566, now seen corresponding path program 1 times [2018-10-10 15:43:03,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:04,097 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 15:43:04,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:43:04,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-10 15:43:04,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-10 15:43:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-10 15:43:04,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-10 15:43:04,125 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 13 states. [2018-10-10 15:43:04,826 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-10 15:43:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:05,646 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-10 15:43:05,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 15:43:05,651 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2018-10-10 15:43:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:05,665 INFO L225 Difference]: With dead ends: 109 [2018-10-10 15:43:05,665 INFO L226 Difference]: Without dead ends: 109 [2018-10-10 15:43:05,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:43:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-10 15:43:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2018-10-10 15:43:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-10 15:43:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-10 15:43:05,713 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 80 [2018-10-10 15:43:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:05,715 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-10 15:43:05,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-10 15:43:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-10 15:43:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-10 15:43:05,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:05,721 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2018-10-10 15:43:05,722 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:05,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:05,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1536078687, now seen corresponding path program 1 times [2018-10-10 15:43:05,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:06,317 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-10 15:43:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:06,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:06,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:43:06,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:43:06,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:43:06,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:43:06,961 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 22 states. [2018-10-10 15:43:08,904 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-10 15:43:09,094 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-10-10 15:43:09,319 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-10 15:43:09,514 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-10 15:43:09,830 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-10 15:43:10,064 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-10-10 15:43:10,777 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-10-10 15:43:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:11,049 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-10 15:43:11,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-10 15:43:11,049 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2018-10-10 15:43:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:11,053 INFO L225 Difference]: With dead ends: 124 [2018-10-10 15:43:11,053 INFO L226 Difference]: Without dead ends: 124 [2018-10-10 15:43:11,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=469, Invalid=1337, Unknown=0, NotChecked=0, Total=1806 [2018-10-10 15:43:11,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-10 15:43:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2018-10-10 15:43:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-10 15:43:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-10 15:43:11,067 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 95 [2018-10-10 15:43:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:11,067 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-10 15:43:11,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:43:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-10 15:43:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-10 15:43:11,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:11,072 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-10-10 15:43:11,072 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:11,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1497726058, now seen corresponding path program 2 times [2018-10-10 15:43:11,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:43:12,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:12,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-10 15:43:12,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-10 15:43:12,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-10 15:43:12,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:43:12,120 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 25 states. [2018-10-10 15:43:13,975 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-10-10 15:43:14,228 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-10 15:43:14,447 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-10-10 15:43:14,715 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-10-10 15:43:14,916 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-10-10 15:43:15,309 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2018-10-10 15:43:15,779 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2018-10-10 15:43:16,293 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2018-10-10 15:43:16,687 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2018-10-10 15:43:17,112 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2018-10-10 15:43:17,527 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2018-10-10 15:43:17,899 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2018-10-10 15:43:18,277 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2018-10-10 15:43:18,752 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2018-10-10 15:43:19,064 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-10-10 15:43:19,410 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-10-10 15:43:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:19,480 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-10 15:43:19,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-10 15:43:19,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 110 [2018-10-10 15:43:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:19,487 INFO L225 Difference]: With dead ends: 139 [2018-10-10 15:43:19,488 INFO L226 Difference]: Without dead ends: 139 [2018-10-10 15:43:19,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=529, Invalid=1823, Unknown=0, NotChecked=0, Total=2352 [2018-10-10 15:43:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-10 15:43:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2018-10-10 15:43:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-10 15:43:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-10 15:43:19,500 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 110 [2018-10-10 15:43:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:19,500 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-10 15:43:19,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-10 15:43:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-10 15:43:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-10 15:43:19,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:43:19,503 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:19,503 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:43:19,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:43:19,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1320674305, now seen corresponding path program 3 times [2018-10-10 15:43:19,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:43:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-10 15:43:20,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:20,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:43:20,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:43:20,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:43:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:43:20,099 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 22 states. [2018-10-10 15:43:21,361 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-10 15:43:21,572 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2018-10-10 15:43:21,872 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2018-10-10 15:43:22,139 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2018-10-10 15:43:22,405 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2018-10-10 15:43:22,688 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2018-10-10 15:43:22,910 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2018-10-10 15:43:23,103 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:43:23,306 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2018-10-10 15:43:23,493 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-10-10 15:43:23,749 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-10 15:43:24,045 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2018-10-10 15:43:24,419 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2018-10-10 15:43:24,751 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2018-10-10 15:43:25,038 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2018-10-10 15:43:25,215 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2018-10-10 15:43:25,428 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2018-10-10 15:43:25,657 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2018-10-10 15:43:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:25,666 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-10 15:43:25,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-10 15:43:25,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 125 [2018-10-10 15:43:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:25,669 INFO L225 Difference]: With dead ends: 124 [2018-10-10 15:43:25,669 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:43:25,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=730, Invalid=1622, Unknown=0, NotChecked=0, Total=2352 [2018-10-10 15:43:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:43:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:43:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:43:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:43:25,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2018-10-10 15:43:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:25,671 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:43:25,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:43:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:43:25,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:43:25,677 INFO L202 PluginConnector]: Adding new model openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:43:25 BoogieIcfgContainer [2018-10-10 15:43:25,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:43:25,678 INFO L168 Benchmark]: Toolchain (without parser) took 23508.43 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.7 MB). Free memory was 1.5 GB in the beginning and 968.6 MB in the end (delta: 509.1 MB). Peak memory consumption was 696.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:43:25,679 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 15:43:25,680 INFO L168 Benchmark]: Boogie Preprocessor took 79.40 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 15:43:25,680 INFO L168 Benchmark]: RCFGBuilder took 726.04 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 15:43:25,681 INFO L168 Benchmark]: TraceAbstraction took 22696.89 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.7 MB). Free memory was 1.4 GB in the beginning and 968.6 MB in the end (delta: 477.3 MB). Peak memory consumption was 665.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:43:25,685 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 79.40 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 726.04 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 22696.89 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.7 MB). Free memory was 1.4 GB in the beginning and 968.6 MB in the end (delta: 477.3 MB). Peak memory consumption was 665.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 166]: 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, 93 locations, 1 error locations. SAFE Result, 22.6s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 18.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 289 SDtfs, 2705 SDslu, 2744 SDs, 0 SdLazy, 2149 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred 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, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 506679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 19/90 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_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-43-25-697.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-43-25-697.csv Received shutdown request...