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_20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:53:14,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:14,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:14,578 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-12 20:53:14,617 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:53:14,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:14,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:14,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:14,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:14,636 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:14,636 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:14,636 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:14,637 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:14,637 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:14,637 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:14,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:14,638 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:14,638 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:14,639 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:14,639 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:14,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:14,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:14,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:14,716 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:14,716 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:14,717 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl [2018-10-12 20:53:14,718 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl' [2018-10-12 20:53:14,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:14,812 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:14,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:14,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:14,813 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:14,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/1) ... [2018-10-12 20:53:14,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:14,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:14,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:14,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:14,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (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 [2018-10-12 20:53:14,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:15,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:15,575 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:15 BoogieIcfgContainer [2018-10-12 20:53:15,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:15,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:15,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:15,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:15,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:14" (1/2) ... [2018-10-12 20:53:15,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1594ae22 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:15, skipping insertion in model container [2018-10-12 20:53:15,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:15" (2/2) ... [2018-10-12 20:53:15,583 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl [2018-10-12 20:53:15,592 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:15,600 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:15,613 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:15,642 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:15,642 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:15,643 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:15,643 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:15,643 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:15,643 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:15,643 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:15,644 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:15,644 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-10-12 20:53:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-12 20:53:15,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:15,673 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] [2018-10-12 20:53:15,674 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:15,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -399447942, now seen corresponding path program 1 times [2018-10-12 20:53:15,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:15,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:15,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:15,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:15,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:15,914 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2018-10-12 20:53:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:15,988 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2018-10-12 20:53:15,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:15,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-12 20:53:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:16,003 INFO L225 Difference]: With dead ends: 119 [2018-10-12 20:53:16,003 INFO L226 Difference]: Without dead ends: 119 [2018-10-12 20:53:16,006 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 [2018-10-12 20:53:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-12 20:53:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 108. [2018-10-12 20:53:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-12 20:53:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2018-10-12 20:53:16,053 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 50 [2018-10-12 20:53:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:16,053 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2018-10-12 20:53:16,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2018-10-12 20:53:16,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-12 20:53:16,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:16,055 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] [2018-10-12 20:53:16,056 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:16,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:16,057 INFO L82 PathProgramCache]: Analyzing trace with hash 473686874, now seen corresponding path program 1 times [2018-10-12 20:53:16,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:16,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:16,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-12 20:53:16,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-12 20:53:16,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-12 20:53:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-10-12 20:53:16,845 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 13 states. [2018-10-12 20:53:17,379 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-12 20:53:17,733 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-12 20:53:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:18,789 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2018-10-12 20:53:18,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-12 20:53:18,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2018-10-12 20:53:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:18,796 INFO L225 Difference]: With dead ends: 181 [2018-10-12 20:53:18,796 INFO L226 Difference]: Without dead ends: 181 [2018-10-12 20:53:18,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2018-10-12 20:53:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-12 20:53:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2018-10-12 20:53:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-12 20:53:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-12 20:53:18,830 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 50 [2018-10-12 20:53:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:18,831 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-12 20:53:18,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-12 20:53:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-12 20:53:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-12 20:53:18,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:18,837 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:53:18,839 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:18,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1435402259, now seen corresponding path program 1 times [2018-10-12 20:53:18,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:19,623 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-12 20:53:20,145 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-12 20:53:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:53:20,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:20,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 20:53:20,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 20:53:20,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 20:53:20,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2018-10-12 20:53:20,814 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 29 states. [2018-10-12 20:53:21,448 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-12 20:53:22,126 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-10-12 20:53:22,510 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2018-10-12 20:53:23,062 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-12 20:53:23,271 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-10-12 20:53:23,514 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-10-12 20:53:23,996 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-10-12 20:53:24,337 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2018-10-12 20:53:24,675 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 93 [2018-10-12 20:53:24,860 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-12 20:53:25,008 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2018-10-12 20:53:25,306 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-12 20:53:25,586 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-12 20:53:25,887 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-10-12 20:53:26,277 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-12 20:53:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:26,296 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2018-10-12 20:53:26,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-12 20:53:26,298 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 93 [2018-10-12 20:53:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:26,299 INFO L225 Difference]: With dead ends: 135 [2018-10-12 20:53:26,299 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:53:26,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=571, Invalid=2291, Unknown=0, NotChecked=0, Total=2862 [2018-10-12 20:53:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:53:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:53:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:53:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:53:26,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2018-10-12 20:53:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:26,302 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:53:26,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 20:53:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:53:26,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:53:26,308 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:53:26 BoogieIcfgContainer [2018-10-12 20:53:26,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:53:26,309 INFO L168 Benchmark]: Toolchain (without parser) took 11498.02 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 36.7 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 447.7 MB). Peak memory consumption was 484.4 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:26,310 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-12 20:53:26,311 INFO L168 Benchmark]: Boogie Preprocessor took 79.08 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. [2018-10-12 20:53:26,311 INFO L168 Benchmark]: RCFGBuilder took 683.06 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. [2018-10-12 20:53:26,312 INFO L168 Benchmark]: TraceAbstraction took 10731.90 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 36.7 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 416.0 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:26,316 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 0.21 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 79.08 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 683.06 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 10731.90 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 36.7 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 416.0 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 163]: 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, 76 locations, 1 error locations. SAFE Result, 10.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 7.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 201 SDtfs, 1489 SDslu, 767 SDs, 0 SdLazy, 1036 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred 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, 55 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 163243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/20 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_20.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-53-26-327.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_20.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-53-26-327.csv Received shutdown request...