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/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:02,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:02,433 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:02,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:02,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:02,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:02,450 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:02,452 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:02,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:02,454 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:02,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:26:02,479 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:26:02,489 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:02,490 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:02,491 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:02,491 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:02,491 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:02,491 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:02,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:02,492 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:02,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:02,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:02,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:02,493 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:02,493 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:02,494 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:02,494 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:02,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:02,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:02,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:02,577 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:02,578 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:02,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl [2018-10-10 15:26:02,579 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl' [2018-10-10 15:26:02,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:02,664 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:02,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:02,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:02,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:02,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... [2018-10-10 15:26:02,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:02,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:02,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:02,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:02,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:26:02,822 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:03,664 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:03,665 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:03 BoogieIcfgContainer [2018-10-10 15:26:03,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:03,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:03,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:03,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:03,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:02" (1/2) ... [2018-10-10 15:26:03,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3933d643 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:03, skipping insertion in model container [2018-10-10 15:26:03,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:03" (2/2) ... [2018-10-10 15:26:03,675 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl [2018-10-10 15:26:03,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:03,696 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:03,715 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:03,745 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:03,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:03,746 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:03,746 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:03,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:03,747 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:03,747 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:03,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:03,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2018-10-10 15:26:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-10 15:26:03,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:03,780 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] [2018-10-10 15:26:03,781 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:03,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash -165905077, now seen corresponding path program 1 times [2018-10-10 15:26:03,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:04,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:04,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:26:04,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:04,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:04,552 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 11 states. [2018-10-10 15:26:05,027 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-10 15:26:05,459 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-10 15:26:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:06,514 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-10 15:26:06,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-10 15:26:06,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2018-10-10 15:26:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:06,531 INFO L225 Difference]: With dead ends: 162 [2018-10-10 15:26:06,531 INFO L226 Difference]: Without dead ends: 122 [2018-10-10 15:26:06,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:26:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-10 15:26:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2018-10-10 15:26:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-10 15:26:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-10 15:26:06,585 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 63 [2018-10-10 15:26:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:06,585 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-10 15:26:06,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-10 15:26:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:26:06,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:06,590 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] [2018-10-10 15:26:06,591 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:06,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash 469729015, now seen corresponding path program 1 times [2018-10-10 15:26:06,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:07,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:07,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-10 15:26:07,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 15:26:07,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 15:26:07,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:26:07,598 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 27 states. [2018-10-10 15:26:09,102 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-10 15:26:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:12,141 INFO L93 Difference]: Finished difference Result 230 states and 231 transitions. [2018-10-10 15:26:12,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-10 15:26:12,141 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2018-10-10 15:26:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:12,146 INFO L225 Difference]: With dead ends: 230 [2018-10-10 15:26:12,146 INFO L226 Difference]: Without dead ends: 210 [2018-10-10 15:26:12,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=465, Invalid=2957, Unknown=0, NotChecked=0, Total=3422 [2018-10-10 15:26:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-10 15:26:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 150. [2018-10-10 15:26:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-10 15:26:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-10 15:26:12,162 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 106 [2018-10-10 15:26:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:12,163 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-10 15:26:12,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 15:26:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-10 15:26:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-10 15:26:12,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:12,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:12,166 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:12,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 696035787, now seen corresponding path program 2 times [2018-10-10 15:26:12,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:12,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:12,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:12,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:12,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:12,351 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 3 states. [2018-10-10 15:26:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:12,355 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-10 15:26:12,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:12,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-10 15:26:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:12,361 INFO L225 Difference]: With dead ends: 67 [2018-10-10 15:26:12,361 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:26:12,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:26:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:26:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:26:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:26:12,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2018-10-10 15:26:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:12,364 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:26:12,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:26:12,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:26:12,372 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:26:12 BoogieIcfgContainer [2018-10-10 15:26:12,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:26:12,373 INFO L168 Benchmark]: Toolchain (without parser) took 9711.13 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 191.0 MB). Peak memory consumption was 215.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:12,375 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. [2018-10-10 15:26:12,375 INFO L168 Benchmark]: Boogie Preprocessor took 79.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:26:12,376 INFO L168 Benchmark]: RCFGBuilder took 920.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:12,377 INFO L168 Benchmark]: TraceAbstraction took 8706.04 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 159.2 MB). Peak memory consumption was 183.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:12,383 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 79.27 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 920.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8706.04 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 24.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 159.2 MB). Peak memory consumption was 183.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 192]: 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, 107 locations, 1 error locations. SAFE Result, 8.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 226 SDtfs, 989 SDslu, 2064 SDs, 0 SdLazy, 1957 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred 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, 75 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 158268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 47/49 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/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-26-12-400.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-26-12-400.csv Received shutdown request...