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/count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:36:19,265 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:36:19,267 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:36:19,285 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:36:19,286 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:36:19,287 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:36:19,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:36:19,290 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:36:19,293 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:36:19,293 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:36:19,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:36:19,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:36:19,297 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:36:19,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:36:19,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:36:19,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:36:19,302 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:36:19,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:36:19,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:36:19,314 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:36:19,315 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:36:19,316 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:36:19,319 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:36:19,334 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 16:36:19,350 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:36:19,351 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:36:19,351 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:36:19,352 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:36:19,353 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:36:19,353 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:36:19,354 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:36:19,354 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:36:19,355 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:36:19,355 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:36:19,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:36:19,355 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:36:19,356 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:36:19,356 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:36:19,357 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:36:19,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:36:19,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:36:19,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:36:19,433 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:36:19,433 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:36:19,434 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl [2018-10-14 16:36:19,434 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl' [2018-10-14 16:36:19,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:36:19,513 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:36:19,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:36:19,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:36:19,515 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:36:19,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/1) ... [2018-10-14 16:36:19,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:36:19,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:36:19,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:36:19,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:36:19,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (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 16:36:19,655 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:36:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:36:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:36:20,162 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:36:20,163 INFO L202 PluginConnector]: Adding new model count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:20 BoogieIcfgContainer [2018-10-14 16:36:20,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:36:20,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:36:20,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:36:20,168 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:36:20,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:36:19" (1/2) ... [2018-10-14 16:36:20,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124b867d and model type count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:36:20, skipping insertion in model container [2018-10-14 16:36:20,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:20" (2/2) ... [2018-10-14 16:36:20,171 INFO L112 eAbstractionObserver]: Analyzing ICFG count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl [2018-10-14 16:36:20,181 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:36:20,191 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:36:20,212 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:36:20,245 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:36:20,245 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:36:20,246 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:36:20,246 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:36:20,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:36:20,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:36:20,247 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:36:20,247 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:36:20,247 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:36:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-10-14 16:36:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-14 16:36:20,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:20,287 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] [2018-10-14 16:36:20,293 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:20,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1681798246, now seen corresponding path program 1 times [2018-10-14 16:36:20,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:21,042 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 16:36:21,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:36:21,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-14 16:36:21,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:36:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:36:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:36:21,070 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 10 states. [2018-10-14 16:36:21,862 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-14 16:36:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:22,111 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-14 16:36:22,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:36:22,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-10-14 16:36:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:22,124 INFO L225 Difference]: With dead ends: 58 [2018-10-14 16:36:22,125 INFO L226 Difference]: Without dead ends: 58 [2018-10-14 16:36:22,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:36:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-14 16:36:22,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2018-10-14 16:36:22,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-14 16:36:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-14 16:36:22,168 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 35 [2018-10-14 16:36:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:22,168 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-14 16:36:22,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:36:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-14 16:36:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-14 16:36:22,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:22,171 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:36:22,172 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:22,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash 563898402, now seen corresponding path program 1 times [2018-10-14 16:36:22,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:22,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:22,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-14 16:36:22,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-14 16:36:22,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-14 16:36:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:36:22,692 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 13 states. [2018-10-14 16:36:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:23,574 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-14 16:36:23,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:36:23,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2018-10-14 16:36:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:23,577 INFO L225 Difference]: With dead ends: 82 [2018-10-14 16:36:23,577 INFO L226 Difference]: Without dead ends: 82 [2018-10-14 16:36:23,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:36:23,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-14 16:36:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2018-10-14 16:36:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-14 16:36:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-14 16:36:23,588 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 51 [2018-10-14 16:36:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:23,589 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-14 16:36:23,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-14 16:36:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-14 16:36:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-14 16:36:23,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:23,592 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-10-14 16:36:23,592 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:23,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:23,592 INFO L82 PathProgramCache]: Analyzing trace with hash 285013162, now seen corresponding path program 2 times [2018-10-14 16:36:23,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-14 16:36:24,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:24,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-14 16:36:24,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-14 16:36:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-14 16:36:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:36:24,212 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 13 states. [2018-10-14 16:36:24,825 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-14 16:36:25,214 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2018-10-14 16:36:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:25,362 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-14 16:36:25,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-14 16:36:25,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2018-10-14 16:36:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:25,370 INFO L225 Difference]: With dead ends: 66 [2018-10-14 16:36:25,370 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:36:25,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:36:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:36:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:36:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:36:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:36:25,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2018-10-14 16:36:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:25,373 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:36:25,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-14 16:36:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:36:25,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:36:25,379 INFO L202 PluginConnector]: Adding new model count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:36:25 BoogieIcfgContainer [2018-10-14 16:36:25,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:36:25,380 INFO L168 Benchmark]: Toolchain (without parser) took 5868.41 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: 330.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. [2018-10-14 16:36:25,382 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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 16:36:25,382 INFO L168 Benchmark]: Boogie Preprocessor took 60.22 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 16:36:25,383 INFO L168 Benchmark]: RCFGBuilder took 583.17 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. [2018-10-14 16:36:25,385 INFO L168 Benchmark]: TraceAbstraction took 5214.96 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: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:36:25,390 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 0.18 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 60.22 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 583.17 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 5214.96 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: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: 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, 45 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 120 SDtfs, 701 SDslu, 477 SDs, 0 SdLazy, 365 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 76192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/43 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/count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-36-25-409.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_down-alloca_true-valid-memsafety_true-termination.i_7.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-36-25-409.csv Received shutdown request...