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/test-0521_true-valid-memsafety.i_38.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:54:49,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:54:49,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:54:49,730 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:54:49,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:54:49,732 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:54:49,733 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:54:49,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:54:49,739 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:54:49,740 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:54:49,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:54:49,781 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 16:54:49,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:54:49,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:54:49,793 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:54:49,793 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:54:49,793 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:54:49,794 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:54:49,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:54:49,794 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:54:49,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:54:49,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:54:49,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:54:49,795 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:54:49,795 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:54:49,796 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:54:49,796 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:54:49,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:54:49,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:54:49,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:54:49,865 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:54:49,866 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:54:49,866 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/test-0521_true-valid-memsafety.i_38.bpl [2018-10-14 16:54:49,867 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/test-0521_true-valid-memsafety.i_38.bpl' [2018-10-14 16:54:49,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:54:49,947 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:54:49,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:54:49,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:54:49,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:54:49,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:49,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/1) ... [2018-10-14 16:54:50,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:54:50,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:54:50,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:54:50,028 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:54:50,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (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 16:54:50,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:54:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:54:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:54:51,348 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:54:51,348 INFO L202 PluginConnector]: Adding new model test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:51 BoogieIcfgContainer [2018-10-14 16:54:51,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:54:51,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:54:51,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:54:51,355 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:54:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:49" (1/2) ... [2018-10-14 16:54:51,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6b6b24 and model type test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:51, skipping insertion in model container [2018-10-14 16:54:51,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:51" (2/2) ... [2018-10-14 16:54:51,359 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0521_true-valid-memsafety.i_38.bpl [2018-10-14 16:54:51,369 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:54:51,378 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:54:51,396 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:54:51,425 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:54:51,426 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:54:51,427 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:54:51,427 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:54:51,427 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:54:51,427 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:54:51,427 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:54:51,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:54:51,428 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:54:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2018-10-14 16:54:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-14 16:54:51,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:51,480 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:54:51,481 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:51,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:51,488 INFO L82 PathProgramCache]: Analyzing trace with hash 896494076, now seen corresponding path program 1 times [2018-10-14 16:54:51,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:51,894 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 16:54:51,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:54:51,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-14 16:54:51,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-14 16:54:51,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-14 16:54:51,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-14 16:54:51,923 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2018-10-14 16:54:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:52,084 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-14 16:54:52,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-14 16:54:52,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-14 16:54:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:52,101 INFO L225 Difference]: With dead ends: 267 [2018-10-14 16:54:52,101 INFO L226 Difference]: Without dead ends: 246 [2018-10-14 16:54:52,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-14 16:54:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-14 16:54:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 186. [2018-10-14 16:54:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-14 16:54:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-14 16:54:52,170 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 123 [2018-10-14 16:54:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:52,171 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-14 16:54:52,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-14 16:54:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-14 16:54:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-14 16:54:52,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:52,176 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:52,176 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:52,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:52,177 INFO L82 PathProgramCache]: Analyzing trace with hash -412123834, now seen corresponding path program 1 times [2018-10-14 16:54:52,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:53,095 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-14 16:54:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:56,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:56,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-14 16:54:56,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-14 16:54:56,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-14 16:54:56,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2018-10-14 16:54:56,437 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 36 states. [2018-10-14 16:55:00,613 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-14 16:55:00,764 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-14 16:55:03,249 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-10-14 16:55:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:04,216 INFO L93 Difference]: Finished difference Result 370 states and 370 transitions. [2018-10-14 16:55:04,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-14 16:55:04,217 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 185 [2018-10-14 16:55:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:04,222 INFO L225 Difference]: With dead ends: 370 [2018-10-14 16:55:04,222 INFO L226 Difference]: Without dead ends: 268 [2018-10-14 16:55:04,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=523, Invalid=4733, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:55:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-14 16:55:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 248. [2018-10-14 16:55:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-14 16:55:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-14 16:55:04,248 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 185 [2018-10-14 16:55:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:04,249 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-14 16:55:04,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-14 16:55:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-14 16:55:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-14 16:55:04,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:55:04,256 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:55:04,256 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:55:04,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:55:04,257 INFO L82 PathProgramCache]: Analyzing trace with hash 666667792, now seen corresponding path program 2 times [2018-10-14 16:55:04,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:55:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:55:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:07,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:07,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-14 16:55:07,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-14 16:55:07,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-14 16:55:07,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2222, Unknown=0, NotChecked=0, Total=2352 [2018-10-14 16:55:07,070 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 49 states. [2018-10-14 16:55:12,425 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-10-14 16:55:12,623 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-10-14 16:55:12,836 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-14 16:55:13,078 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-14 16:55:14,390 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-14 16:55:14,678 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:55:15,086 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-14 16:55:15,347 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-10-14 16:55:15,668 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:55:15,986 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-14 16:55:16,289 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-14 16:55:16,590 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-10-14 16:55:17,320 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2018-10-14 16:55:17,569 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2018-10-14 16:55:17,834 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-10-14 16:55:18,124 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-10-14 16:55:18,368 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2018-10-14 16:55:18,623 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-14 16:55:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:20,173 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2018-10-14 16:55:20,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-14 16:55:20,174 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 247 [2018-10-14 16:55:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:20,176 INFO L225 Difference]: With dead ends: 266 [2018-10-14 16:55:20,176 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:55:20,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1894, Invalid=10988, Unknown=0, NotChecked=0, Total=12882 [2018-10-14 16:55:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:55:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:55:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:55:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:55:20,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 247 [2018-10-14 16:55:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:20,181 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:55:20,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-14 16:55:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:55:20,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:55:20,186 INFO L202 PluginConnector]: Adding new model test-0521_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:55:20 BoogieIcfgContainer [2018-10-14 16:55:20,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:55:20,187 INFO L168 Benchmark]: Toolchain (without parser) took 30241.10 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.8 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 323.0 MB). Peak memory consumption was 706.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:20,188 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:55:20,189 INFO L168 Benchmark]: Boogie Preprocessor took 79.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:55:20,189 INFO L168 Benchmark]: RCFGBuilder took 1322.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:20,190 INFO L168 Benchmark]: TraceAbstraction took 28834.04 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.8 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 270.2 MB). Peak memory consumption was 654.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:20,194 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1322.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28834.04 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.8 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 270.2 MB). Peak memory consumption was 654.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 391]: 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, 186 locations, 1 error locations. SAFE Result, 28.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 21.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 395 SDtfs, 2995 SDslu, 4653 SDs, 0 SdLazy, 7713 SolverSat, 384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 19 SyntacticMatches, 12 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred 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, 80 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 1802092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 23/68 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/test-0521_true-valid-memsafety.i_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-55-20-205.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/test-0521_true-valid-memsafety.i_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-55-20-205.csv Received shutdown request...