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_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:08:27,763 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:08:27,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:08:27,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:08:27,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:08:27,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:08:27,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:08:27,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:08:27,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:08:27,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:08:27,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:08:27,784 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:08:27,785 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:08:27,786 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:08:27,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:08:27,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:08:27,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:08:27,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:08:27,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:08:27,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:08:27,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:08:27,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:08:27,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 21:08:27,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 21:08:27,806 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 21:08:27,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 21:08:27,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 21:08:27,808 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:08:27,819 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:08:27,819 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:08:27,820 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:08:27,820 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:08:27,820 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:08:27,820 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:08:27,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:08:27,821 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:08:27,822 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:08:27,822 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:08:27,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:08:27,822 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:08:27,822 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:08:27,823 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:08:27,823 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:08:27,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:08:27,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:08:27,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:08:27,896 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:08:27,897 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:08:27,898 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-12 21:08:27,898 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl' [2018-10-12 21:08:27,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:08:27,978 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:08:27,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:08:27,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:08:27,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:08:28,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... [2018-10-12 21:08:28,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:08:28,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:08:28,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:08:28,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:08:28,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:08:28,146 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:08:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:08:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:08:29,120 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:08:29,121 INFO L202 PluginConnector]: Adding new model openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:08:29 BoogieIcfgContainer [2018-10-12 21:08:29,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:08:29,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:08:29,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:08:29,130 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:08:29,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:08:27" (1/2) ... [2018-10-12 21:08:29,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9924bf and model type openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:08:29, skipping insertion in model container [2018-10-12 21:08:29,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:08:29" (2/2) ... [2018-10-12 21:08:29,134 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-12 21:08:29,146 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:08:29,160 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:08:29,180 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:08:29,217 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:08:29,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:08:29,218 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:08:29,218 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:08:29,219 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:08:29,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:08:29,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:08:29,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:08:29,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:08:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2018-10-12 21:08:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-12 21:08:29,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:29,271 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:29,272 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:29,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:29,280 INFO L82 PathProgramCache]: Analyzing trace with hash 175120809, now seen corresponding path program 1 times [2018-10-12 21:08:29,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:30,578 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-12 21:08:30,757 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-12 21:08:31,188 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-12 21:08:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:31,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:08:31,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-12 21:08:31,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-12 21:08:31,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-12 21:08:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2018-10-12 21:08:31,989 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 28 states. [2018-10-12 21:08:34,887 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-12 21:08:35,050 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:08:35,260 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-12 21:08:36,996 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-12 21:08:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:37,311 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-12 21:08:37,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-12 21:08:37,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 112 [2018-10-12 21:08:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:37,339 INFO L225 Difference]: With dead ends: 167 [2018-10-12 21:08:37,340 INFO L226 Difference]: Without dead ends: 167 [2018-10-12 21:08:37,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=960, Invalid=3732, Unknown=0, NotChecked=0, Total=4692 [2018-10-12 21:08:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-12 21:08:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2018-10-12 21:08:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-12 21:08:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-12 21:08:37,399 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 112 [2018-10-12 21:08:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:37,400 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-12 21:08:37,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-12 21:08:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-12 21:08:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-12 21:08:37,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:37,408 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:37,408 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:37,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1649016138, now seen corresponding path program 1 times [2018-10-12 21:08:37,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:38,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:38,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-12 21:08:38,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-12 21:08:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-12 21:08:38,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2018-10-12 21:08:38,732 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 32 states. [2018-10-12 21:08:41,566 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-12 21:08:41,803 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 21:08:42,201 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:08:42,468 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-12 21:08:42,819 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-12 21:08:43,073 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-12 21:08:43,410 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:08:43,721 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-12 21:08:44,299 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-10-12 21:08:44,463 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-12 21:08:44,731 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-12 21:08:44,972 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-12 21:08:45,350 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2018-10-12 21:08:45,577 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-12 21:08:45,853 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-12 21:08:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:08:46,644 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-12 21:08:46,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-12 21:08:46,644 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 140 [2018-10-12 21:08:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:08:46,648 INFO L225 Difference]: With dead ends: 195 [2018-10-12 21:08:46,648 INFO L226 Difference]: Without dead ends: 195 [2018-10-12 21:08:46,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=543, Invalid=4149, Unknown=0, NotChecked=0, Total=4692 [2018-10-12 21:08:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-12 21:08:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2018-10-12 21:08:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-12 21:08:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-12 21:08:46,668 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 140 [2018-10-12 21:08:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:08:46,669 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-12 21:08:46,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-12 21:08:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-12 21:08:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-12 21:08:46,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:08:46,673 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:08:46,673 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:08:46,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:08:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1738604989, now seen corresponding path program 2 times [2018-10-12 21:08:46,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:08:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:08:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:08:48,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:08:48,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-12 21:08:48,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-12 21:08:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-12 21:08:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2018-10-12 21:08:48,579 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 39 states. [2018-10-12 21:08:51,381 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-12 21:08:52,703 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-12 21:08:53,132 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-12 21:09:18,627 WARN L178 SmtUtils]: Spent 24.60 s on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-12 21:09:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:20,125 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-12 21:09:20,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-12 21:09:20,127 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 168 [2018-10-12 21:09:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:20,130 INFO L225 Difference]: With dead ends: 223 [2018-10-12 21:09:20,130 INFO L226 Difference]: Without dead ends: 223 [2018-10-12 21:09:20,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=655, Invalid=6317, Unknown=0, NotChecked=0, Total=6972 [2018-10-12 21:09:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-12 21:09:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2018-10-12 21:09:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-12 21:09:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-12 21:09:20,146 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 168 [2018-10-12 21:09:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:20,146 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-12 21:09:20,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-12 21:09:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-12 21:09:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-12 21:09:20,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:20,151 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:20,151 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:20,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:20,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1659743152, now seen corresponding path program 3 times [2018-10-12 21:09:20,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:22,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:22,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-12 21:09:22,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-12 21:09:22,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-12 21:09:22,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1619, Unknown=0, NotChecked=0, Total=1722 [2018-10-12 21:09:22,244 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 42 states. [2018-10-12 21:09:24,963 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-12 21:09:25,223 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-12 21:09:25,514 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-12 21:09:26,508 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-10-12 21:09:26,954 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-12 21:09:27,255 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-12 21:09:27,537 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-12 21:09:27,812 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 21:09:28,045 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:09:28,776 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-12 21:09:29,232 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-12 21:09:29,754 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-10-12 21:09:30,030 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-12 21:09:30,342 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-12 21:09:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:31,325 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-12 21:09:31,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-12 21:09:31,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 196 [2018-10-12 21:09:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:31,329 INFO L225 Difference]: With dead ends: 251 [2018-10-12 21:09:31,329 INFO L226 Difference]: Without dead ends: 251 [2018-10-12 21:09:31,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=747, Invalid=7443, Unknown=0, NotChecked=0, Total=8190 [2018-10-12 21:09:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-12 21:09:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2018-10-12 21:09:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-12 21:09:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-12 21:09:31,344 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 196 [2018-10-12 21:09:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:31,345 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-12 21:09:31,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-12 21:09:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-12 21:09:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-12 21:09:31,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:31,349 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:31,349 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:31,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1461142749, now seen corresponding path program 4 times [2018-10-12 21:09:31,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:32,017 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:32,216 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:09:32,446 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:09:32,697 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-12 21:09:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:34,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:34,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-12 21:09:34,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-12 21:09:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-12 21:09:34,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1794, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 21:09:34,534 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 44 states. [2018-10-12 21:09:36,269 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-12 21:09:37,706 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 21:09:38,056 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:09:38,351 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:09:38,663 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-12 21:09:39,169 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-12 21:09:39,526 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-12 21:09:39,980 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2018-10-12 21:09:40,315 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-12 21:09:40,781 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-12 21:09:41,196 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-12 21:09:41,766 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-12 21:09:42,059 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-12 21:09:42,329 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-12 21:09:42,763 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2018-10-12 21:09:43,129 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:09:43,359 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-12 21:09:43,589 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 21:09:43,825 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 21:09:44,193 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-12 21:09:44,519 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-12 21:09:44,759 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-12 21:09:45,008 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-12 21:09:45,272 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-12 21:09:45,731 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-12 21:09:45,962 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-12 21:09:46,201 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-12 21:09:46,568 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-12 21:09:47,064 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-12 21:09:47,336 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-12 21:09:47,588 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-10-12 21:09:47,832 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:09:48,043 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-12 21:09:48,321 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 21:09:48,511 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-12 21:09:48,702 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-12 21:09:49,021 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-12 21:09:49,382 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-12 21:09:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:09:49,641 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-12 21:09:49,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-12 21:09:49,642 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 224 [2018-10-12 21:09:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:09:49,644 INFO L225 Difference]: With dead ends: 279 [2018-10-12 21:09:49,644 INFO L226 Difference]: Without dead ends: 279 [2018-10-12 21:09:49,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=997, Invalid=8123, Unknown=0, NotChecked=0, Total=9120 [2018-10-12 21:09:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-12 21:09:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 253. [2018-10-12 21:09:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-12 21:09:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-12 21:09:49,656 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 224 [2018-10-12 21:09:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:09:49,657 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-12 21:09:49,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-12 21:09:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-12 21:09:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-12 21:09:49,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:09:49,662 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:09:49,662 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:09:49,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:09:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1247088618, now seen corresponding path program 5 times [2018-10-12 21:09:49,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:09:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:09:51,698 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 21:09:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 92 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:09:52,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:09:52,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-12 21:09:52,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-12 21:09:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-12 21:09:52,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2039, Unknown=0, NotChecked=0, Total=2162 [2018-10-12 21:09:52,881 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 47 states. [2018-10-12 21:09:55,340 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-12 21:09:55,540 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-12 21:09:55,705 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-12 21:09:56,866 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 21:10:00,190 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-12 21:10:00,419 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-12 21:10:01,313 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-12 21:10:01,760 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-12 21:10:02,279 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-12 21:10:02,927 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-12 21:10:03,109 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-12 21:10:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:03,192 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-12 21:10:03,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-12 21:10:03,194 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 252 [2018-10-12 21:10:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:03,195 INFO L225 Difference]: With dead ends: 277 [2018-10-12 21:10:03,195 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:10:03,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1112, Invalid=10878, Unknown=0, NotChecked=0, Total=11990 [2018-10-12 21:10:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:10:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:10:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:10:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:10:03,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2018-10-12 21:10:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:03,199 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:10:03,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-12 21:10:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:10:03,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:10:03,210 INFO L202 PluginConnector]: Adding new model openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:10:03 BoogieIcfgContainer [2018-10-12 21:10:03,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:10:03,211 INFO L168 Benchmark]: Toolchain (without parser) took 95235.03 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 381.2 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -405.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:10:03,212 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:10:03,213 INFO L168 Benchmark]: Boogie Preprocessor took 85.73 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:10:03,214 INFO L168 Benchmark]: RCFGBuilder took 1056.69 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-12 21:10:03,215 INFO L168 Benchmark]: TraceAbstraction took 94087.08 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 381.2 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -447.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:10:03,217 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 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.73 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1056.69 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 94087.08 ms. Allocated memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: 381.2 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -447.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 230]: 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, 127 locations, 1 error locations. SAFE Result, 94.0s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 79.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 659 SDtfs, 7776 SDslu, 15055 SDs, 0 SdLazy, 15328 SolverSat, 421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8578 ImplicationChecksByTransitivity, 71.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=5, 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, 6 MinimizatonAttempts, 130 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1092 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1086 ConstructedInterpolants, 0 QuantifiedInterpolants, 4265221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 92/800 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_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-10-03-228.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-10-03-228.csv Received shutdown request...