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 0.1.23-093a8c0 [2018-10-14 16:33:26,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:26,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:26,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:26,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:26,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:26,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:26,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:26,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:26,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:26,627 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:33:26,652 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 16:33:26,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:26,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:26,663 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:26,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:26,663 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:26,663 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:26,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:26,664 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:26,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:26,665 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:26,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:26,665 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:26,665 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:26,666 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:26,666 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:26,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:26,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:26,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:26,733 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:26,733 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:26,734 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl [2018-10-14 16:33:26,734 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl' [2018-10-14 16:33:26,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:26,818 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:26,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:26,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:26,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:26,848 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,850 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,881 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,881 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,901 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,906 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,909 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 14.10 04:33:26" (1/1) ... [2018-10-14 16:33:26,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:26,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:26,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:26,922 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:26,923 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 14.10 04:33:26" (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 16:33:26,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:26,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:27,879 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:27,880 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 14.10 04:33:27 BoogieIcfgContainer [2018-10-14 16:33:27,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:27,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:27,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:27,886 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:27,886 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 14.10 04:33:26" (1/2) ... [2018-10-14 16:33:27,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ce683b and model type alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:27, skipping insertion in model container [2018-10-14 16:33:27,887 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 14.10 04:33:27" (2/2) ... [2018-10-14 16:33:27,889 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_24.bpl [2018-10-14 16:33:27,899 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:27,908 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:27,926 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:27,956 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:27,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:27,957 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:27,957 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:27,957 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:27,957 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:27,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:27,958 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:27,958 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2018-10-14 16:33:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-14 16:33:27,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:27,993 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] [2018-10-14 16:33:27,994 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:28,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:28,001 INFO L82 PathProgramCache]: Analyzing trace with hash -165905077, now seen corresponding path program 1 times [2018-10-14 16:33:28,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:28,925 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 16:33:28,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:28,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:33:28,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:33:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:33:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:28,955 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 11 states. [2018-10-14 16:33:29,769 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-14 16:33:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:30,693 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-14 16:33:30,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:33:30,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2018-10-14 16:33:30,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:30,709 INFO L225 Difference]: With dead ends: 162 [2018-10-14 16:33:30,710 INFO L226 Difference]: Without dead ends: 122 [2018-10-14 16:33:30,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:33:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-14 16:33:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2018-10-14 16:33:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-14 16:33:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-14 16:33:30,761 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 63 [2018-10-14 16:33:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:30,762 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-14 16:33:30,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:33:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-14 16:33:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:33:30,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:30,767 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] [2018-10-14 16:33:30,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:30,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash 469729015, now seen corresponding path program 1 times [2018-10-14 16:33:30,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:31,786 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 16:33:31,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:31,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 16:33:31,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 16:33:31,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 16:33:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:33:31,791 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 27 states. [2018-10-14 16:33:33,308 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-14 16:33:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:36,357 INFO L93 Difference]: Finished difference Result 230 states and 231 transitions. [2018-10-14 16:33:36,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-14 16:33:36,357 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2018-10-14 16:33:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:36,361 INFO L225 Difference]: With dead ends: 230 [2018-10-14 16:33:36,361 INFO L226 Difference]: Without dead ends: 210 [2018-10-14 16:33:36,363 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 [2018-10-14 16:33:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-14 16:33:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 150. [2018-10-14 16:33:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-14 16:33:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-14 16:33:36,378 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 106 [2018-10-14 16:33:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:36,378 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-14 16:33:36,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 16:33:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-14 16:33:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-14 16:33:36,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:36,382 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] [2018-10-14 16:33:36,382 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:36,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash 696035787, now seen corresponding path program 2 times [2018-10-14 16:33:36,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:36,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:36,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:36,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:36,496 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 3 states. [2018-10-14 16:33:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:36,524 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-14 16:33:36,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:36,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-14 16:33:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:36,526 INFO L225 Difference]: With dead ends: 67 [2018-10-14 16:33:36,526 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:33:36,526 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 [2018-10-14 16:33:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:33:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:33:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:33:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:33:36,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2018-10-14 16:33:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:36,528 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:33:36,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:33:36,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:33:36,534 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 14.10 04:33:36 BoogieIcfgContainer [2018-10-14 16:33:36,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:33:36,535 INFO L168 Benchmark]: Toolchain (without parser) took 9718.10 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.4 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 174.5 MB). Peak memory consumption was 204.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:36,537 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. [2018-10-14 16:33:36,537 INFO L168 Benchmark]: Boogie Preprocessor took 98.27 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. [2018-10-14 16:33:36,538 INFO L168 Benchmark]: RCFGBuilder took 959.74 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:36,539 INFO L168 Benchmark]: TraceAbstraction took 8651.97 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.4 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 142.8 MB). Peak memory consumption was 173.2 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:36,544 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 98.27 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 959.74 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8651.97 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.4 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 142.8 MB). Peak memory consumption was 173.2 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, 8.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 6.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 226 SDtfs, 989 SDslu, 2064 SDs, 0 SdLazy, 1957 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 4.0s 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, 1.7s 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-0-2018-10-14_16-33-36-556.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-0-2018-10-14_16-33-36-556.csv Received shutdown request...