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_18.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:23,540 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:23,543 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:23,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:23,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:23,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:23,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:23,565 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:23,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:23,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:23,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:33:23,617 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 16:33:23,632 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:23,632 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:23,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:23,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:23,633 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:23,634 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:23,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:23,638 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:23,638 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:23,638 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:23,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:23,639 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:23,639 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:23,640 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:23,640 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:23,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:23,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:23,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:23,731 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:23,731 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:23,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl [2018-10-14 16:33:23,733 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl' [2018-10-14 16:33:23,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:23,836 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:23,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:23,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:23,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:23,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/1) ... [2018-10-14 16:33:23,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:23,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:23,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:23,925 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:23,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (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 16:33:24,009 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:24,640 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:24,641 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:24 BoogieIcfgContainer [2018-10-14 16:33:24,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:24,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:24,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:24,646 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:23" (1/2) ... [2018-10-14 16:33:24,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96668a and model type alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:24, skipping insertion in model container [2018-10-14 16:33:24,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:24" (2/2) ... [2018-10-14 16:33:24,649 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl [2018-10-14 16:33:24,657 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:24,665 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:24,679 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:24,708 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:24,709 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:24,709 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:24,710 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:24,710 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:24,710 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:24,710 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:24,710 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:24,710 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2018-10-14 16:33:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-14 16:33:24,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:24,742 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] [2018-10-14 16:33:24,743 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:24,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2104171806, now seen corresponding path program 1 times [2018-10-14 16:33:24,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:25,527 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 16:33:25,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:25,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:33:25,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:33:25,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:33:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:33:25,559 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 9 states. [2018-10-14 16:33:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:26,645 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-14 16:33:26,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:33:26,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-10-14 16:33:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:26,660 INFO L225 Difference]: With dead ends: 110 [2018-10-14 16:33:26,661 INFO L226 Difference]: Without dead ends: 96 [2018-10-14 16:33:26,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:33:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-14 16:33:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2018-10-14 16:33:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-14 16:33:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-14 16:33:26,709 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 37 [2018-10-14 16:33:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:26,710 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-14 16:33:26,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:33:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-14 16:33:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-14 16:33:26,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:26,713 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] [2018-10-14 16:33:26,714 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:26,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:26,715 INFO L82 PathProgramCache]: Analyzing trace with hash 569997834, now seen corresponding path program 1 times [2018-10-14 16:33:26,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:27,069 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 16:33:27,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:27,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:33:27,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:33:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:33:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:27,073 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 11 states. [2018-10-14 16:33:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:28,017 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-14 16:33:28,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:33:28,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2018-10-14 16:33:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:28,023 INFO L225 Difference]: With dead ends: 170 [2018-10-14 16:33:28,023 INFO L226 Difference]: Without dead ends: 156 [2018-10-14 16:33:28,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:33:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-14 16:33:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 124. [2018-10-14 16:33:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-14 16:33:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-14 16:33:28,040 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 80 [2018-10-14 16:33:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:28,042 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-14 16:33:28,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:33:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-14 16:33:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-14 16:33:28,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:28,045 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] [2018-10-14 16:33:28,045 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:28,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash 410698142, now seen corresponding path program 2 times [2018-10-14 16:33:28,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:28,183 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 16:33:28,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:28,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:28,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:28,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:28,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:28,186 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 3 states. [2018-10-14 16:33:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:28,230 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-14 16:33:28,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:28,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2018-10-14 16:33:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:28,233 INFO L225 Difference]: With dead ends: 67 [2018-10-14 16:33:28,233 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:33:28,234 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 16:33:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:33:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:33:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:33:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:33:28,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2018-10-14 16:33:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:28,235 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:33:28,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:33:28,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:33:28,241 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:33:28 BoogieIcfgContainer [2018-10-14 16:33:28,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:33:28,242 INFO L168 Benchmark]: Toolchain (without parser) took 4407.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 222.1 MB). Peak memory consumption was 222.1 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:28,245 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 16:33:28,246 INFO L168 Benchmark]: Boogie Preprocessor took 87.55 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 16:33:28,246 INFO L168 Benchmark]: RCFGBuilder took 716.36 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 16:33:28,247 INFO L168 Benchmark]: TraceAbstraction took 3599.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:28,251 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 0.19 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 87.55 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 716.36 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 3599.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 162]: 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, 81 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 901 SDslu, 618 SDs, 0 SdLazy, 293 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred 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, 47 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 80519 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_18.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-33-28-265.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_18.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-33-28-265.csv Received shutdown request...