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/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:14:15,178 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:14:15,180 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:14:15,191 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:14:15,192 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:14:15,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:14:15,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:14:15,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:14:15,199 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:14:15,200 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:14:15,201 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-15 15:14:15,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-15 15:14:15,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-15 15:14:15,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-15 15:14:15,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-15 15:14:15,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-15 15:14:15,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-15 15:14:15,207 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-15 15:14:15,209 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-15 15:14:15,211 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-15 15:14:15,212 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-15 15:14:15,213 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-15 15:14:15,216 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-15 15:14:15,216 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-15 15:14:15,216 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-15 15:14:15,217 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-15 15:14:15,218 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-15 15:14:15,219 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-15 15:14:15,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-15 15:14:15,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-15 15:14:15,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-15 15:14:15,222 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-15 15:14:15,222 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-15 15:14:15,222 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-15 15:14:15,223 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-15 15:14:15,224 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-15 15:14:15,224 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:14:15,237 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:14:15,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:14:15,239 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:14:15,239 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:14:15,239 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:14:15,239 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:14:15,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:14:15,244 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:14:15,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:14:15,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:14:15,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:14:15,244 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:14:15,245 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:14:15,246 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:14:15,246 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:14:15,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:14:15,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:14:15,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:14:15,308 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:14:15,308 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:14:15,309 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl [2018-10-15 15:14:15,309 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl' [2018-10-15 15:14:15,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:14:15,372 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:14:15,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:14:15,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:14:15,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:14:15,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/1) ... [2018-10-15 15:14:15,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:14:15,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:14:15,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:14:15,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:14:15,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (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 [2018-10-15 15:14:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:14:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:14:15,970 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:14:15,971 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:14:15 BoogieIcfgContainer [2018-10-15 15:14:15,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:14:15,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:14:15,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:14:15,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:14:15,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:14:15" (1/2) ... [2018-10-15 15:14:15,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674c2075 and model type veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:14:15, skipping insertion in model container [2018-10-15 15:14:15,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:14:15" (2/2) ... [2018-10-15 15:14:15,979 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc__loop.i_2.bpl [2018-10-15 15:14:15,989 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:14:15,998 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:14:16,016 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:14:16,046 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:14:16,046 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:14:16,047 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:14:16,047 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:14:16,047 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:14:16,047 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:14:16,047 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:14:16,048 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:14:16,048 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:14:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-15 15:14:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-15 15:14:16,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:14:16,076 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] [2018-10-15 15:14:16,077 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:14:16,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:14:16,084 INFO L82 PathProgramCache]: Analyzing trace with hash 607427358, now seen corresponding path program 1 times [2018-10-15 15:14:16,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:14:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:14:16,736 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:14:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:14:16,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:14:16,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-15 15:14:16,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:14:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:14:16,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:14:16,877 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 10 states. [2018-10-15 15:14:17,489 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-15 15:14:18,062 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-10-15 15:14:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:14:18,333 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-15 15:14:18,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-15 15:14:18,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-10-15 15:14:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:14:18,352 INFO L225 Difference]: With dead ends: 57 [2018-10-15 15:14:18,352 INFO L226 Difference]: Without dead ends: 57 [2018-10-15 15:14:18,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-10-15 15:14:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-15 15:14:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2018-10-15 15:14:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-15 15:14:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-15 15:14:18,395 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2018-10-15 15:14:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:14:18,395 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-15 15:14:18,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:14:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-15 15:14:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-15 15:14:18,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:14:18,398 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 15:14:18,399 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:14:18,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:14:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash -19657533, now seen corresponding path program 1 times [2018-10-15 15:14:18,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:14:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:14:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:14:18,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:14:18,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-15 15:14:18,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-15 15:14:18,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-15 15:14:18,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-10-15 15:14:18,878 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 14 states. [2018-10-15 15:14:19,342 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-10-15 15:14:19,576 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-10-15 15:14:19,750 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-10-15 15:14:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:14:20,225 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-15 15:14:20,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-15 15:14:20,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2018-10-15 15:14:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:14:20,228 INFO L225 Difference]: With dead ends: 69 [2018-10-15 15:14:20,229 INFO L226 Difference]: Without dead ends: 69 [2018-10-15 15:14:20,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2018-10-15 15:14:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-15 15:14:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2018-10-15 15:14:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-15 15:14:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-15 15:14:20,246 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 45 [2018-10-15 15:14:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:14:20,247 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-15 15:14:20,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-15 15:14:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-15 15:14:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-15 15:14:20,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:14:20,253 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-15 15:14:20,258 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:14:20,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:14:20,259 INFO L82 PathProgramCache]: Analyzing trace with hash 411512638, now seen corresponding path program 2 times [2018-10-15 15:14:20,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:14:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:14:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:14:20,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:14:20,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-15 15:14:20,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-15 15:14:20,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-15 15:14:20,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-10-15 15:14:20,629 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 13 states. [2018-10-15 15:14:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:14:21,080 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2018-10-15 15:14:21,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-15 15:14:21,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2018-10-15 15:14:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:14:21,082 INFO L225 Difference]: With dead ends: 52 [2018-10-15 15:14:21,083 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:14:21,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:14:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:14:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:14:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:14:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:14:21,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2018-10-15 15:14:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:14:21,085 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:14:21,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-15 15:14:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:14:21,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:14:21,091 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:14:21 BoogieIcfgContainer [2018-10-15 15:14:21,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:14:21,092 INFO L168 Benchmark]: Toolchain (without parser) took 5720.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 362.2 MB). Peak memory consumption was 362.2 MB. Max. memory is 7.1 GB. [2018-10-15 15:14:21,094 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:14:21,094 INFO L168 Benchmark]: Boogie Preprocessor took 47.72 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. [2018-10-15 15:14:21,095 INFO L168 Benchmark]: RCFGBuilder took 549.74 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:14:21,096 INFO L168 Benchmark]: TraceAbstraction took 5119.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.1 MB). Peak memory consumption was 341.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:14:21,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.72 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 549.74 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5119.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.1 MB). Peak memory consumption was 341.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: 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, 42 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 94 SDtfs, 715 SDslu, 501 SDs, 0 SdLazy, 266 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 29612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 11/31 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/veris.c_NetBSD-libc__loop.i_2.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-14-21-111.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_NetBSD-libc__loop.i_2.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-14-21-111.csv Received shutdown request...