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 0.1.23-093a8c0 [2018-10-14 16:48:36,628 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:48:36,630 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:48:36,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:48:36,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:48:36,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:48:36,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:48:36,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:48:36,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:48:36,653 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:48:36,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:48:36,702 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:48:36,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:48:36,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:48:36,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:48:36,721 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:48:36,721 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:48:36,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:48:36,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:48:36,722 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:48:36,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:48:36,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:48:36,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:48:36,723 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:48:36,723 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:48:36,724 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:48:36,725 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:48:36,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:48:36,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:48:36,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:48:36,821 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:48:36,823 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:48:36,824 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-14 16:48:36,824 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl' [2018-10-14 16:48:36,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:48:36,930 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:48:36,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:48:36,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:48:36,932 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:48:36,960 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:36,962 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:36,984 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:36,985 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:36,993 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:36,997 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:37,003 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 14.10 04:48:36" (1/1) ... [2018-10-14 16:48:37,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:48:37,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:48:37,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:48:37,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:48:37,014 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 14.10 04:48:36" (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 [2018-10-14 16:48:37,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:48:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:48:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:48:37,903 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:48:37,904 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 14.10 04:48:37 BoogieIcfgContainer [2018-10-14 16:48:37,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:48:37,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:48:37,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:48:37,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:48:37,908 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 14.10 04:48:36" (1/2) ... [2018-10-14 16:48:37,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75eb64d5 and model type openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:37, skipping insertion in model container [2018-10-14 16:48:37,910 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 14.10 04:48:37" (2/2) ... [2018-10-14 16:48:37,912 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca_true-valid-memsafety_true-termination.i_15.bpl [2018-10-14 16:48:37,921 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:48:37,930 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:48:37,948 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:48:37,976 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:48:37,977 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:48:37,977 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:48:37,977 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:48:37,978 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:48:37,978 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:48:37,978 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:48:37,978 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:48:37,979 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:48:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2018-10-14 16:48:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-14 16:48:38,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:48:38,015 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] [2018-10-14 16:48:38,016 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:48:38,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:48:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 175120809, now seen corresponding path program 1 times [2018-10-14 16:48:38,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:48:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:48:39,337 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-14 16:48:39,479 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-14 16:48:39,862 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-14 16:48:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:48:40,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:48:40,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2018-10-14 16:48:40,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:48:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:48:40,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:48:40,700 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 28 states. [2018-10-14 16:48:42,994 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-14 16:48:44,306 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-14 16:48:46,356 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-14 16:48:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:48:46,673 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-14 16:48:46,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:48:46,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 112 [2018-10-14 16:48:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:48:46,691 INFO L225 Difference]: With dead ends: 167 [2018-10-14 16:48:46,692 INFO L226 Difference]: Without dead ends: 167 [2018-10-14 16:48:46,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=960, Invalid=3732, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:48:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-14 16:48:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2018-10-14 16:48:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-14 16:48:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-14 16:48:46,759 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 112 [2018-10-14 16:48:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:48:46,761 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-14 16:48:46,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:48:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-14 16:48:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-14 16:48:46,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:48:46,767 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] [2018-10-14 16:48:46,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:48:46,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:48:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1649016138, now seen corresponding path program 1 times [2018-10-14 16:48:46,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:48:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:48:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:48:48,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:48:48,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-14 16:48:48,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-14 16:48:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-14 16:48:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2018-10-14 16:48:48,072 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 32 states. [2018-10-14 16:48:50,918 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-14 16:48:51,159 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-14 16:48:51,546 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:48:51,828 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-14 16:48:52,194 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-14 16:48:52,449 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-14 16:48:52,789 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:48:53,100 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-14 16:48:53,679 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-10-14 16:48:53,842 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-14 16:48:54,130 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-10-14 16:48:54,378 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-14 16:48:54,875 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-14 16:48:55,134 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-10-14 16:48:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:48:55,896 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 16:48:55,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-14 16:48:55,897 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 140 [2018-10-14 16:48:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:48:55,900 INFO L225 Difference]: With dead ends: 195 [2018-10-14 16:48:55,901 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 16:48:55,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=543, Invalid=4149, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:48:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 16:48:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2018-10-14 16:48:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-14 16:48:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-14 16:48:55,927 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 140 [2018-10-14 16:48:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:48:55,927 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-14 16:48:55,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-14 16:48:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-14 16:48:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-14 16:48:55,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:48:55,938 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] [2018-10-14 16:48:55,939 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:48:55,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:48:55,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1738604989, now seen corresponding path program 2 times [2018-10-14 16:48:55,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:48:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:48:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:48:58,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:48:58,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:48:58,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:48:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:48:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1387, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:48:58,079 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 39 states. [2018-10-14 16:49:00,842 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-10-14 16:49:02,213 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-14 16:49:02,663 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-14 16:49:15,715 WARN L179 SmtUtils]: Spent 12.11 s on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:49:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:17,239 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-14 16:49:17,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-14 16:49:17,240 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 168 [2018-10-14 16:49:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:17,243 INFO L225 Difference]: With dead ends: 223 [2018-10-14 16:49:17,243 INFO L226 Difference]: Without dead ends: 223 [2018-10-14 16:49:17,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=655, Invalid=6317, Unknown=0, NotChecked=0, Total=6972 [2018-10-14 16:49:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-14 16:49:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2018-10-14 16:49:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-14 16:49:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-14 16:49:17,258 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 168 [2018-10-14 16:49:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:17,258 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-14 16:49:17,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:49:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-14 16:49:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-14 16:49:17,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:17,262 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] [2018-10-14 16:49:17,262 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:17,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1659743152, now seen corresponding path program 3 times [2018-10-14 16:49:17,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:19,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:19,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-14 16:49:19,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-14 16:49:19,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-14 16:49:19,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1619, Unknown=0, NotChecked=0, Total=1722 [2018-10-14 16:49:19,245 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 42 states. [2018-10-14 16:49:21,876 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-14 16:49:22,092 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-10-14 16:49:22,359 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-14 16:49:22,698 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-10-14 16:49:23,733 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-14 16:49:24,026 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-10-14 16:49:24,305 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-14 16:49:24,556 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:49:24,778 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:49:25,513 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-10-14 16:49:25,969 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-14 16:49:26,492 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-10-14 16:49:26,768 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:49:27,075 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-14 16:49:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:28,044 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-14 16:49:28,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:49:28,047 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 196 [2018-10-14 16:49:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:28,050 INFO L225 Difference]: With dead ends: 251 [2018-10-14 16:49:28,050 INFO L226 Difference]: Without dead ends: 251 [2018-10-14 16:49:28,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=747, Invalid=7443, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:49:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-14 16:49:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2018-10-14 16:49:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-14 16:49:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-14 16:49:28,064 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 196 [2018-10-14 16:49:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:28,065 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-14 16:49:28,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-14 16:49:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-14 16:49:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-14 16:49:28,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:28,069 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] [2018-10-14 16:49:28,069 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:28,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1461142749, now seen corresponding path program 4 times [2018-10-14 16:49:28,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:28,678 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:49:28,857 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-14 16:49:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:30,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:30,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:49:30,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:49:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:49:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1794, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:49:30,778 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 44 states. [2018-10-14 16:49:32,525 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-14 16:49:32,793 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-14 16:49:33,779 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:49:34,148 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:49:34,462 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:49:34,797 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-10-14 16:49:35,273 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-14 16:49:35,632 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-14 16:49:36,043 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2018-10-14 16:49:36,380 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2018-10-14 16:49:36,870 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-10-14 16:49:37,267 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-14 16:49:37,798 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-14 16:49:38,141 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-14 16:49:38,449 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2018-10-14 16:49:38,867 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2018-10-14 16:49:39,261 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:49:39,492 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-14 16:49:39,717 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-14 16:49:39,950 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:49:40,313 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2018-10-14 16:49:40,632 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-14 16:49:40,867 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-14 16:49:41,104 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:49:41,346 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-14 16:49:41,791 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:49:42,017 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:49:42,246 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2018-10-14 16:49:42,611 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-10-14 16:49:43,036 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-14 16:49:43,384 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-14 16:49:43,631 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-10-14 16:49:43,861 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:49:44,057 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-14 16:49:44,334 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:49:44,542 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-10-14 16:49:44,734 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:49:45,070 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-14 16:49:45,430 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-14 16:49:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:45,679 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-14 16:49:45,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:49:45,680 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 224 [2018-10-14 16:49:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:45,682 INFO L225 Difference]: With dead ends: 279 [2018-10-14 16:49:45,682 INFO L226 Difference]: Without dead ends: 279 [2018-10-14 16:49:45,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=997, Invalid=8123, Unknown=0, NotChecked=0, Total=9120 [2018-10-14 16:49:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-14 16:49:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 253. [2018-10-14 16:49:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-14 16:49:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-14 16:49:45,694 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 224 [2018-10-14 16:49:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:45,695 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-14 16:49:45,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:49:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-14 16:49:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-14 16:49:45,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:49:45,698 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] [2018-10-14 16:49:45,699 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:49:45,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:49:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1247088618, now seen corresponding path program 5 times [2018-10-14 16:49:45,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:49:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:49:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 92 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:49:48,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:49:48,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-14 16:49:48,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-14 16:49:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-14 16:49:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2039, Unknown=0, NotChecked=0, Total=2162 [2018-10-14 16:49:48,396 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 47 states. [2018-10-14 16:49:50,893 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-14 16:49:51,097 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-10-14 16:49:51,274 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-14 16:49:51,807 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-10-14 16:49:52,447 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:49:53,257 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2018-10-14 16:49:55,720 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-14 16:49:55,947 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-10-14 16:49:56,794 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-14 16:49:57,234 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-14 16:49:57,660 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-10-14 16:49:58,228 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-14 16:49:58,429 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-10-14 16:49:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:49:58,531 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-14 16:49:58,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-14 16:49:58,532 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 252 [2018-10-14 16:49:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:49:58,533 INFO L225 Difference]: With dead ends: 277 [2018-10-14 16:49:58,533 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:49:58,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1112, Invalid=10878, Unknown=0, NotChecked=0, Total=11990 [2018-10-14 16:49:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:49:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:49:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:49:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:49:58,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2018-10-14 16:49:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:49:58,538 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:49:58,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-14 16:49:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:49:58,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:49:58,545 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 14.10 04:49:58 BoogieIcfgContainer [2018-10-14 16:49:58,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:49:58,546 INFO L168 Benchmark]: Toolchain (without parser) took 81616.93 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 517.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 328.4 MB). Peak memory consumption was 845.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:49:58,547 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-14 16:49:58,547 INFO L168 Benchmark]: Boogie Preprocessor took 81.02 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. [2018-10-14 16:49:58,548 INFO L168 Benchmark]: RCFGBuilder took 891.41 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. [2018-10-14 16:49:58,549 INFO L168 Benchmark]: TraceAbstraction took 80640.00 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 517.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 286.2 MB). Peak memory consumption was 803.6 MB. Max. memory is 7.1 GB. [2018-10-14 16:49:58,552 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 0.21 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 81.02 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 891.41 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 80640.00 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 517.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 286.2 MB). Peak memory consumption was 803.6 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, 80.5s 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, 17.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8578 ImplicationChecksByTransitivity, 57.5s 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, 12.1s 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-0-2018-10-14_16-49-58-562.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-0-2018-10-14_16-49-58-562.csv Received shutdown request...