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_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:42:49,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:42:49,882 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:42:49,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:42:49,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:42:49,898 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:42:49,899 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:42:49,901 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:42:49,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:42:49,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:42:49,904 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:42:49,905 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:42:49,905 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:42:49,906 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:42:49,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:42:49,908 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:42:49,909 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:42:49,911 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:42:49,913 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:42:49,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:42:49,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:42:49,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:42:49,919 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:42:49,928 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 15:42:49,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:42:49,940 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:42:49,940 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:42:49,941 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:42:49,941 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:42:49,941 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:42:49,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:42:49,942 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:42:49,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:42:49,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:42:49,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:42:49,943 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:42:49,943 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:42:49,944 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:42:49,944 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:42:49,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:42:50,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:42:50,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:42:50,014 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:42:50,015 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:42:50,015 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl [2018-10-10 15:42:50,016 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl' [2018-10-10 15:42:50,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:42:50,091 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:42:50,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:42:50,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:42:50,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:42:50,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/1) ... [2018-10-10 15:42:50,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:42:50,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:42:50,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:42:50,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:42:50,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (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 15:42:50,241 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:42:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:42:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:42:50,995 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:42:50,996 INFO L202 PluginConnector]: Adding new model openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:50 BoogieIcfgContainer [2018-10-10 15:42:50,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:42:50,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:42:50,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:42:51,002 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:42:51,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:42:50" (1/2) ... [2018-10-10 15:42:51,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a20a208 and model type openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:42:51, skipping insertion in model container [2018-10-10 15:42:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:42:50" (2/2) ... [2018-10-10 15:42:51,006 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl [2018-10-10 15:42:51,016 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:42:51,027 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:42:51,045 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:42:51,076 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:42:51,076 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:42:51,077 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:42:51,077 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:42:51,077 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:42:51,077 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:42:51,077 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:42:51,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:42:51,078 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:42:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-10-10 15:42:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:42:51,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:51,112 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] [2018-10-10 15:42:51,113 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:51,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:51,120 INFO L82 PathProgramCache]: Analyzing trace with hash 91693169, now seen corresponding path program 1 times [2018-10-10 15:42:51,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:52,404 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 15:42:52,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:42:52,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-10 15:42:52,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-10 15:42:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-10 15:42:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-10-10 15:42:52,434 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 17 states. [2018-10-10 15:42:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:54,615 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-10 15:42:54,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-10 15:42:54,617 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2018-10-10 15:42:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:54,631 INFO L225 Difference]: With dead ends: 124 [2018-10-10 15:42:54,631 INFO L226 Difference]: Without dead ends: 124 [2018-10-10 15:42:54,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=244, Invalid=1016, Unknown=0, NotChecked=0, Total=1260 [2018-10-10 15:42:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-10 15:42:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2018-10-10 15:42:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-10 15:42:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-10 15:42:54,682 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 69 [2018-10-10 15:42:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:54,686 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-10 15:42:54,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-10 15:42:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-10 15:42:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-10 15:42:54,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:54,690 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] [2018-10-10 15:42:54,691 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:54,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:54,691 INFO L82 PathProgramCache]: Analyzing trace with hash 132907582, now seen corresponding path program 1 times [2018-10-10 15:42:54,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:55,528 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 15:42:55,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:55,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-10 15:42:55,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-10 15:42:55,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-10 15:42:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2018-10-10 15:42:55,532 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 24 states. [2018-10-10 15:42:56,467 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-10 15:42:57,457 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-10 15:42:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:58,557 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-10 15:42:58,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-10 15:42:58,564 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 97 [2018-10-10 15:42:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:58,572 INFO L225 Difference]: With dead ends: 152 [2018-10-10 15:42:58,572 INFO L226 Difference]: Without dead ends: 152 [2018-10-10 15:42:58,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:42:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-10 15:42:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2018-10-10 15:42:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-10 15:42:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-10 15:42:58,599 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 97 [2018-10-10 15:42:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:58,600 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-10 15:42:58,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-10 15:42:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-10 15:42:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-10 15:42:58,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:58,603 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] [2018-10-10 15:42:58,603 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:58,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash -516989301, now seen corresponding path program 2 times [2018-10-10 15:42:58,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:43:00,457 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 15:43:00,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:43:00,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:43:00,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:43:00,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:43:00,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:43:00,460 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 29 states. [2018-10-10 15:43:01,960 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-10 15:43:02,193 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-10-10 15:43:02,759 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-10 15:43:03,018 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:43:03,317 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-10 15:43:03,494 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-10-10 15:43:03,675 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-10 15:43:03,845 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-10 15:43:04,039 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-10 15:43:04,328 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-10-10 15:43:04,585 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-10 15:43:04,807 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-10 15:43:05,037 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-10 15:43:05,203 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-10 15:43:05,355 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-10 15:43:05,628 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-10 15:43:05,773 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-10 15:43:05,980 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-10 15:43:06,190 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 15:43:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:43:06,257 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-10 15:43:06,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-10 15:43:06,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 125 [2018-10-10 15:43:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:43:06,259 INFO L225 Difference]: With dead ends: 150 [2018-10-10 15:43:06,260 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:43:06,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=595, Invalid=3565, Unknown=0, NotChecked=0, Total=4160 [2018-10-10 15:43:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:43:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:43:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:43:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:43:06,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2018-10-10 15:43:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:43:06,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:43:06,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:43:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:43:06,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:43:06,268 INFO L202 PluginConnector]: Adding new model openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:43:06 BoogieIcfgContainer [2018-10-10 15:43:06,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:43:06,269 INFO L168 Benchmark]: Toolchain (without parser) took 16179.49 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 135.8 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 266.8 MB). Peak memory consumption was 402.6 MB. Max. memory is 7.1 GB. [2018-10-10 15:43:06,271 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:43:06,271 INFO L168 Benchmark]: Boogie Preprocessor took 67.04 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:43:06,272 INFO L168 Benchmark]: RCFGBuilder took 837.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:43:06,273 INFO L168 Benchmark]: TraceAbstraction took 15270.68 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 135.8 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 235.1 MB). Peak memory consumption was 370.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:43:06,277 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 0.19 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 67.04 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 837.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15270.68 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 135.8 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 235.1 MB). Peak memory consumption was 370.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 162]: 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, 84 locations, 1 error locations. SAFE Result, 15.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 237 SDtfs, 1951 SDslu, 2785 SDs, 0 SdLazy, 2313 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=2, 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, 3 MinimizatonAttempts, 52 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 405184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/76 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_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-43-06-289.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-43-06-289.csv Received shutdown request...