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-b8f97f7-m [2018-10-10 15:41:17,263 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:41:17,265 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:41:17,278 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-10 15:41:17,310 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 15:41:17,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:41:17,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:41:17,326 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:41:17,326 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:41:17,326 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:41:17,327 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:41:17,327 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:41:17,328 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:41:17,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:41:17,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:41:17,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:41:17,328 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:41:17,328 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:41:17,335 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:41:17,335 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:41:17,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:41:17,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:41:17,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:41:17,407 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:41:17,408 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:41:17,409 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-10 15:41:17,409 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl' [2018-10-10 15:41:17,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:41:17,491 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:41:17,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:41:17,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:41:17,492 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:41:17,519 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,522 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,546 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,546 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,566 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,572 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,578 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 10.10 03:41:17" (1/1) ... [2018-10-10 15:41:17,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:41:17,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:41:17,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:41:17,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:41:17,592 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 10.10 03:41:17" (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 15:41:17,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:41:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:41:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:41:18,545 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:41:18,546 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 10.10 03:41:18 BoogieIcfgContainer [2018-10-10 15:41:18,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:41:18,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:41:18,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:41:18,551 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:41:18,551 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 10.10 03:41:17" (1/2) ... [2018-10-10 15:41:18,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478e84d6 and model type openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:41:18, skipping insertion in model container [2018-10-10 15:41:18,552 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 10.10 03:41:18" (2/2) ... [2018-10-10 15:41:18,554 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-10 15:41:18,564 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:41:18,573 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:41:18,590 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:41:18,616 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:41:18,617 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:41:18,617 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:41:18,617 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:41:18,617 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:41:18,618 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:41:18,618 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:41:18,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:41:18,618 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:41:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2018-10-10 15:41:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-10 15:41:18,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:18,655 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] [2018-10-10 15:41:18,656 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:18,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash 175120809, now seen corresponding path program 1 times [2018-10-10 15:41:18,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:20,134 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-10 15:41:20,305 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-10 15:41:20,756 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-10 15:41:21,544 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 15:41:21,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:41:21,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-10 15:41:21,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-10 15:41:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-10 15:41:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2018-10-10 15:41:21,575 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 28 states. [2018-10-10 15:41:23,538 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-10 15:41:24,493 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-10 15:41:26,491 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-10 15:41:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:26,878 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-10 15:41:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-10 15:41:26,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 112 [2018-10-10 15:41:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:26,899 INFO L225 Difference]: With dead ends: 167 [2018-10-10 15:41:26,900 INFO L226 Difference]: Without dead ends: 167 [2018-10-10 15:41:26,905 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 [2018-10-10 15:41:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-10 15:41:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2018-10-10 15:41:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-10 15:41:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-10 15:41:26,954 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 112 [2018-10-10 15:41:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:26,956 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-10 15:41:26,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-10 15:41:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-10 15:41:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-10 15:41:26,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:26,962 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] [2018-10-10 15:41:26,962 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:26,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1649016138, now seen corresponding path program 1 times [2018-10-10 15:41:26,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:28,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:28,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-10 15:41:28,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-10 15:41:28,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-10 15:41:28,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2018-10-10 15:41:28,317 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 32 states. [2018-10-10 15:41:31,081 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-10 15:41:31,338 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:41:31,789 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:41:32,096 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-10 15:41:32,410 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-10 15:41:32,668 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-10 15:41:33,040 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:41:33,355 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:41:33,895 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-10-10 15:41:34,055 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-10 15:41:34,327 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-10 15:41:34,665 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-10 15:41:35,058 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-10 15:41:35,327 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-10 15:41:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:36,092 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-10 15:41:36,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-10 15:41:36,092 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 140 [2018-10-10 15:41:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:36,096 INFO L225 Difference]: With dead ends: 195 [2018-10-10 15:41:36,096 INFO L226 Difference]: Without dead ends: 195 [2018-10-10 15:41:36,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=543, Invalid=4149, Unknown=0, NotChecked=0, Total=4692 [2018-10-10 15:41:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-10 15:41:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2018-10-10 15:41:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-10 15:41:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-10 15:41:36,112 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 140 [2018-10-10 15:41:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:36,113 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-10 15:41:36,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-10 15:41:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-10 15:41:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-10 15:41:36,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:36,117 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] [2018-10-10 15:41:36,117 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:36,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1738604989, now seen corresponding path program 2 times [2018-10-10 15:41:36,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:37,608 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-10 15:41:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:41:38,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:41:38,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-10 15:41:38,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-10 15:41:38,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-10 15:41:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 15:41:38,812 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 39 states. [2018-10-10 15:41:41,635 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-10 15:41:42,165 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2018-10-10 15:41:43,124 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-10 15:41:43,588 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-10 15:41:56,574 WARN L178 SmtUtils]: Spent 12.12 s on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:41:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:41:58,127 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-10 15:41:58,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-10 15:41:58,128 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 168 [2018-10-10 15:41:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:41:58,130 INFO L225 Difference]: With dead ends: 223 [2018-10-10 15:41:58,130 INFO L226 Difference]: Without dead ends: 223 [2018-10-10 15:41:58,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=655, Invalid=6317, Unknown=0, NotChecked=0, Total=6972 [2018-10-10 15:41:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-10 15:41:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2018-10-10 15:41:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-10 15:41:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-10 15:41:58,145 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 168 [2018-10-10 15:41:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:41:58,146 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-10 15:41:58,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-10 15:41:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-10 15:41:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-10 15:41:58,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:41:58,152 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] [2018-10-10 15:41:58,152 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:41:58,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:41:58,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1659743152, now seen corresponding path program 3 times [2018-10-10 15:41:58,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:41:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:41:58,797 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:41:58,983 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-10 15:42:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:00,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:00,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-10 15:42:00,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-10 15:42:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-10 15:42:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1619, Unknown=0, NotChecked=0, Total=1722 [2018-10-10 15:42:00,512 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 42 states. [2018-10-10 15:42:03,139 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-10 15:42:03,335 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-10 15:42:03,559 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-10 15:42:03,828 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-10 15:42:05,169 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-10 15:42:05,466 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-10 15:42:05,742 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-10 15:42:06,005 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:42:06,233 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:42:06,952 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-10 15:42:07,411 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-10 15:42:08,056 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-10-10 15:42:08,332 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:42:08,645 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-10 15:42:09,543 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-10 15:42:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:09,624 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-10 15:42:09,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-10 15:42:09,625 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 196 [2018-10-10 15:42:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:09,627 INFO L225 Difference]: With dead ends: 251 [2018-10-10 15:42:09,628 INFO L226 Difference]: Without dead ends: 251 [2018-10-10 15:42:09,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=747, Invalid=7443, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:42:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-10 15:42:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2018-10-10 15:42:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-10 15:42:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-10 15:42:09,641 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 196 [2018-10-10 15:42:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:09,642 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-10 15:42:09,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-10 15:42:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-10 15:42:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-10 15:42:09,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:09,646 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] [2018-10-10 15:42:09,646 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:09,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1461142749, now seen corresponding path program 4 times [2018-10-10 15:42:09,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:10,156 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-10 15:42:10,357 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:42:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:12,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:12,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-10 15:42:12,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-10 15:42:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-10 15:42:12,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1794, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:42:12,332 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 44 states. [2018-10-10 15:42:14,350 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-10 15:42:15,570 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:42:15,935 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:42:16,233 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:42:16,553 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-10 15:42:17,007 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-10 15:42:17,351 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-10 15:42:17,792 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2018-10-10 15:42:18,197 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-10 15:42:18,639 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-10 15:42:19,023 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-10 15:42:19,560 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:42:19,829 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-10 15:42:20,085 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-10 15:42:20,494 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2018-10-10 15:42:20,891 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:42:21,113 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:42:21,341 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-10 15:42:21,575 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:42:21,921 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-10 15:42:22,255 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:42:22,486 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:42:22,722 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:42:23,085 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:42:23,523 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-10 15:42:23,744 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-10 15:42:23,967 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-10 15:42:24,324 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-10 15:42:24,707 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:42:24,967 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:42:25,211 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-10-10 15:42:25,432 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:42:25,639 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-10 15:42:25,931 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-10 15:42:26,116 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-10 15:42:26,296 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-10 15:42:26,623 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-10 15:42:26,982 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-10 15:42:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:27,230 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-10 15:42:27,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-10 15:42:27,231 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 224 [2018-10-10 15:42:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:27,232 INFO L225 Difference]: With dead ends: 279 [2018-10-10 15:42:27,233 INFO L226 Difference]: Without dead ends: 279 [2018-10-10 15:42:27,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=997, Invalid=8123, Unknown=0, NotChecked=0, Total=9120 [2018-10-10 15:42:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-10 15:42:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 253. [2018-10-10 15:42:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-10 15:42:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-10 15:42:27,244 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 224 [2018-10-10 15:42:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:27,245 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-10 15:42:27,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-10 15:42:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-10 15:42:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-10 15:42:27,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:27,253 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] [2018-10-10 15:42:27,253 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:27,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1247088618, now seen corresponding path program 5 times [2018-10-10 15:42:27,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:27,960 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:42:28,155 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-10 15:42:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 92 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:30,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:30,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 15:42:30,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 15:42:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 15:42:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2039, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 15:42:30,465 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 47 states. [2018-10-10 15:42:32,924 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-10 15:42:33,185 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-10 15:42:33,377 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-10 15:42:34,501 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-10 15:42:37,753 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-10 15:42:37,996 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-10 15:42:38,272 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-10-10 15:42:38,495 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-10 15:42:39,011 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-10 15:42:39,486 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-10 15:42:39,951 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-10 15:42:40,539 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-10 15:42:40,719 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-10 15:42:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:40,806 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-10 15:42:40,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-10 15:42:40,806 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 252 [2018-10-10 15:42:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:40,807 INFO L225 Difference]: With dead ends: 277 [2018-10-10 15:42:40,808 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:42:40,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1112, Invalid=10878, Unknown=0, NotChecked=0, Total=11990 [2018-10-10 15:42:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:42:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:42:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:42:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:42:40,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2018-10-10 15:42:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:40,814 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:42:40,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 15:42:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:42:40,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:42:40,824 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 10.10 03:42:40 BoogieIcfgContainer [2018-10-10 15:42:40,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:42:40,825 INFO L168 Benchmark]: Toolchain (without parser) took 83335.31 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 505.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 418.8 MB). Peak memory consumption was 924.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:42:40,826 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:42:40,826 INFO L168 Benchmark]: Boogie Preprocessor took 95.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:42:40,827 INFO L168 Benchmark]: RCFGBuilder took 958.81 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:42:40,828 INFO L168 Benchmark]: TraceAbstraction took 82276.52 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 505.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 376.5 MB). Peak memory consumption was 881.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:42:40,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.55 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 958.81 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 82276.52 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 505.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 376.5 MB). Peak memory consumption was 881.9 MB. 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, 82.2s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 66.8s 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, 59.3s 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, 13.9s 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-0-2018-10-10_15-42-40-841.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-0-2018-10-10_15-42-40-841.csv Received shutdown request...