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_31.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:38,093 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:38,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:38,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:38,114 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:38,115 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:38,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:38,118 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:38,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:38,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:38,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:33:38,161 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 16:33:38,170 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:38,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:38,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:38,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:38,174 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:38,174 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:38,175 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:38,175 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:38,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:38,175 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:38,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:38,176 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:38,176 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:38,177 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:38,177 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:38,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:38,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:38,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:38,253 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:38,253 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:38,254 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl [2018-10-14 16:33:38,255 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl' [2018-10-14 16:33:38,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:38,341 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:38,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:38,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:38,342 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:38,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/1) ... [2018-10-14 16:33:38,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:38,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:38,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:38,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:38,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (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 16:33:38,515 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:38,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:39,405 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:39,406 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:39 BoogieIcfgContainer [2018-10-14 16:33:39,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:39,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:39,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:39,410 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:39,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:38" (1/2) ... [2018-10-14 16:33:39,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc89792 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:39, skipping insertion in model container [2018-10-14 16:33:39,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:39" (2/2) ... [2018-10-14 16:33:39,414 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl [2018-10-14 16:33:39,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:39,431 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:39,447 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:39,473 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:39,474 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:39,474 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:39,475 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:39,475 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:39,475 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:39,475 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:39,475 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:39,475 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-14 16:33:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-14 16:33:39,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:39,509 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] [2018-10-14 16:33:39,510 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:39,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:39,515 INFO L82 PathProgramCache]: Analyzing trace with hash 371435527, now seen corresponding path program 1 times [2018-10-14 16:33:39,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:39,765 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 16:33:39,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:39,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:39,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:39,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:39,796 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 3 states. [2018-10-14 16:33:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:39,880 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2018-10-14 16:33:39,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:39,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-14 16:33:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:39,898 INFO L225 Difference]: With dead ends: 167 [2018-10-14 16:33:39,898 INFO L226 Difference]: Without dead ends: 167 [2018-10-14 16:33:39,900 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 16:33:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-14 16:33:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2018-10-14 16:33:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-14 16:33:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2018-10-14 16:33:39,954 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 59 [2018-10-14 16:33:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:39,955 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2018-10-14 16:33:39,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2018-10-14 16:33:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-14 16:33:39,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:39,959 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] [2018-10-14 16:33:39,959 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:39,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:39,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1932585401, now seen corresponding path program 1 times [2018-10-14 16:33:39,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:40,393 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 16:33:40,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:40,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:33:40,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:33:40,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:33:40,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:33:40,397 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 9 states. [2018-10-14 16:33:41,084 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-14 16:33:41,282 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-10-14 16:33:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:41,600 INFO L93 Difference]: Finished difference Result 247 states and 250 transitions. [2018-10-14 16:33:41,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:33:41,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2018-10-14 16:33:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:41,608 INFO L225 Difference]: With dead ends: 247 [2018-10-14 16:33:41,608 INFO L226 Difference]: Without dead ends: 215 [2018-10-14 16:33:41,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:33:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-14 16:33:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 142. [2018-10-14 16:33:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-14 16:33:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2018-10-14 16:33:41,633 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 59 [2018-10-14 16:33:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2018-10-14 16:33:41,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:33:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2018-10-14 16:33:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-14 16:33:41,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:41,638 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] [2018-10-14 16:33:41,639 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:41,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1991365101, now seen corresponding path program 1 times [2018-10-14 16:33:41,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:42,113 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 16:33:42,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:42,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:33:42,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:33:42,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:33:42,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:42,115 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 11 states. [2018-10-14 16:33:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:43,071 INFO L93 Difference]: Finished difference Result 364 states and 370 transitions. [2018-10-14 16:33:43,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:33:43,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-10-14 16:33:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:43,076 INFO L225 Difference]: With dead ends: 364 [2018-10-14 16:33:43,076 INFO L226 Difference]: Without dead ends: 364 [2018-10-14 16:33:43,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:33:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-10-14 16:33:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 221. [2018-10-14 16:33:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-14 16:33:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2018-10-14 16:33:43,094 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 102 [2018-10-14 16:33:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:43,095 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2018-10-14 16:33:43,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:33:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2018-10-14 16:33:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-14 16:33:43,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:43,099 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:43,099 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:43,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:43,100 INFO L82 PathProgramCache]: Analyzing trace with hash 328842563, now seen corresponding path program 1 times [2018-10-14 16:33:43,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:44,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:44,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-14 16:33:44,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-14 16:33:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-14 16:33:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:33:44,019 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 25 states. [2018-10-14 16:33:45,174 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-10-14 16:33:45,800 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-14 16:33:47,152 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-14 16:33:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:47,681 INFO L93 Difference]: Finished difference Result 300 states and 303 transitions. [2018-10-14 16:33:47,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-14 16:33:47,682 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 134 [2018-10-14 16:33:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:47,684 INFO L225 Difference]: With dead ends: 300 [2018-10-14 16:33:47,684 INFO L226 Difference]: Without dead ends: 248 [2018-10-14 16:33:47,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:33:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-14 16:33:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 185. [2018-10-14 16:33:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-14 16:33:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2018-10-14 16:33:47,696 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 134 [2018-10-14 16:33:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:47,697 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2018-10-14 16:33:47,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-14 16:33:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2018-10-14 16:33:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-14 16:33:47,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:47,700 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] [2018-10-14 16:33:47,700 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:47,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:47,700 INFO L82 PathProgramCache]: Analyzing trace with hash -448090425, now seen corresponding path program 2 times [2018-10-14 16:33:47,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:47,810 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 16:33:47,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:47,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:47,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:47,812 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 3 states. [2018-10-14 16:33:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:47,829 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-14 16:33:47,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:47,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-10-14 16:33:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:47,830 INFO L225 Difference]: With dead ends: 67 [2018-10-14 16:33:47,831 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:33:47,831 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 16:33:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:33:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:33:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:33:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:33:47,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2018-10-14 16:33:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:47,833 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:33:47,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:33:47,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:33:47,839 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:33:47 BoogieIcfgContainer [2018-10-14 16:33:47,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:33:47,840 INFO L168 Benchmark]: Toolchain (without parser) took 9500.52 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 20.4 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 324.3 MB). Peak memory consumption was 344.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:47,841 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:33:47,842 INFO L168 Benchmark]: Boogie Preprocessor took 95.98 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:33:47,843 INFO L168 Benchmark]: RCFGBuilder took 968.07 ms. Allocated memory is still 1.6 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 16:33:47,844 INFO L168 Benchmark]: TraceAbstraction took 8432.06 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 20.4 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 292.6 MB). Peak memory consumption was 313.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:47,848 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 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.98 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 968.07 ms. Allocated memory is still 1.6 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 8432.06 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 20.4 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 292.6 MB). Peak memory consumption was 313.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: 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, 121 locations, 1 error locations. SAFE Result, 8.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 539 SDtfs, 2451 SDslu, 3398 SDs, 0 SdLazy, 1622 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=3, 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, 5 MinimizatonAttempts, 306 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 494 ConstructedInterpolants, 0 QuantifiedInterpolants, 363839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 52/65 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_31.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-33-47-860.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-33-47-860.csv Received shutdown request...