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_40.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:29,418 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:29,421 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:29,434 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:29,434 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:29,435 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:29,437 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:29,438 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:29,440 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:29,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:29,442 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:26:29,481 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:26:29,496 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:29,496 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:29,497 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:29,497 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:29,497 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:29,498 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:29,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:29,498 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:29,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:29,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:29,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:29,499 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:29,500 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:29,500 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:29,500 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:29,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:29,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:29,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:29,567 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:29,568 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:29,569 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl [2018-10-10 15:26:29,569 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl' [2018-10-10 15:26:29,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:29,659 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:29,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:29,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:29,660 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:29,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... [2018-10-10 15:26:29,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:29,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:29,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:29,744 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:29,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:26:29,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:30,839 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:30,839 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:30 BoogieIcfgContainer [2018-10-10 15:26:30,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:30,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:30,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:30,844 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:30,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:29" (1/2) ... [2018-10-10 15:26:30,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7e5d01 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:30, skipping insertion in model container [2018-10-10 15:26:30,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:30" (2/2) ... [2018-10-10 15:26:30,848 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl [2018-10-10 15:26:30,857 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:30,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:30,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:30,910 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:30,911 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:30,911 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:30,911 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:30,911 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:30,911 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:30,912 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:30,912 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:30,912 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-10 15:26:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-10 15:26:30,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:30,947 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] [2018-10-10 15:26:30,948 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:30,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash -161442681, now seen corresponding path program 1 times [2018-10-10 15:26:31,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:31,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:31,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:26:31,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:31,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:31,571 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 11 states. [2018-10-10 15:26:32,149 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-10 15:26:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:33,390 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2018-10-10 15:26:33,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:26:33,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2018-10-10 15:26:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:33,408 INFO L225 Difference]: With dead ends: 273 [2018-10-10 15:26:33,408 INFO L226 Difference]: Without dead ends: 262 [2018-10-10 15:26:33,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:26:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-10 15:26:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 146. [2018-10-10 15:26:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-10 15:26:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-10-10 15:26:33,470 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 59 [2018-10-10 15:26:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:33,471 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-10-10 15:26:33,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-10-10 15:26:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-10 15:26:33,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:33,475 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:26:33,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:33,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1323539735, now seen corresponding path program 1 times [2018-10-10 15:26:33,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:33,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:33,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:33,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:33,777 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 9 states. [2018-10-10 15:26:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:34,458 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2018-10-10 15:26:34,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:26:34,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2018-10-10 15:26:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:34,466 INFO L225 Difference]: With dead ends: 264 [2018-10-10 15:26:34,467 INFO L226 Difference]: Without dead ends: 232 [2018-10-10 15:26:34,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-10 15:26:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2018-10-10 15:26:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-10 15:26:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-10-10 15:26:34,483 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 91 [2018-10-10 15:26:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:34,483 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-10-10 15:26:34,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-10-10 15:26:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-10 15:26:34,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:34,486 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:34,486 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:34,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:34,487 INFO L82 PathProgramCache]: Analyzing trace with hash 959481059, now seen corresponding path program 1 times [2018-10-10 15:26:34,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-10 15:26:34,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:34,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:26:34,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:34,948 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 11 states. [2018-10-10 15:26:36,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:36,239 INFO L93 Difference]: Finished difference Result 402 states and 407 transitions. [2018-10-10 15:26:36,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-10 15:26:36,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2018-10-10 15:26:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:36,247 INFO L225 Difference]: With dead ends: 402 [2018-10-10 15:26:36,247 INFO L226 Difference]: Without dead ends: 402 [2018-10-10 15:26:36,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-10-10 15:26:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-10-10 15:26:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 162. [2018-10-10 15:26:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-10 15:26:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2018-10-10 15:26:36,274 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 134 [2018-10-10 15:26:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:36,276 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2018-10-10 15:26:36,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2018-10-10 15:26:36,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-10 15:26:36,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:36,284 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:36,285 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:36,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:36,285 INFO L82 PathProgramCache]: Analyzing trace with hash -461783945, now seen corresponding path program 1 times [2018-10-10 15:26:36,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-10 15:26:37,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:37,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-10 15:26:37,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-10 15:26:37,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-10 15:26:37,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:26:37,044 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 21 states. [2018-10-10 15:26:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:40,032 INFO L93 Difference]: Finished difference Result 499 states and 504 transitions. [2018-10-10 15:26:40,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:26:40,036 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 161 [2018-10-10 15:26:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:40,038 INFO L225 Difference]: With dead ends: 499 [2018-10-10 15:26:40,039 INFO L226 Difference]: Without dead ends: 339 [2018-10-10 15:26:40,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=549, Invalid=2103, Unknown=0, NotChecked=0, Total=2652 [2018-10-10 15:26:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-10 15:26:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 205. [2018-10-10 15:26:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-10 15:26:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-10 15:26:40,049 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 161 [2018-10-10 15:26:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:40,050 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-10 15:26:40,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-10 15:26:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-10 15:26:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-10 15:26:40,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:40,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:40,054 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:40,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash -78103741, now seen corresponding path program 2 times [2018-10-10 15:26:40,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-10 15:26:40,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:40,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:40,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:40,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:40,192 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 3 states. [2018-10-10 15:26:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:40,234 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-10 15:26:40,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:40,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-10-10 15:26:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:40,235 INFO L225 Difference]: With dead ends: 67 [2018-10-10 15:26:40,235 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:26:40,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:40,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:26:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:26:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:26:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:26:40,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 204 [2018-10-10 15:26:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:40,237 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:26:40,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:26:40,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:26:40,247 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:26:40 BoogieIcfgContainer [2018-10-10 15:26:40,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:26:40,248 INFO L168 Benchmark]: Toolchain (without parser) took 10592.37 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 438.0 MB). Peak memory consumption was 480.5 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:40,250 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:26:40,251 INFO L168 Benchmark]: Boogie Preprocessor took 83.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:26:40,252 INFO L168 Benchmark]: RCFGBuilder took 1095.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:40,253 INFO L168 Benchmark]: TraceAbstraction took 9406.52 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 395.7 MB). Peak memory consumption was 438.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:26:40,258 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1095.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9406.52 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 395.7 MB). Peak memory consumption was 438.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 242]: 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, 139 locations, 1 error locations. SAFE Result, 9.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 6.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 557 SDtfs, 4076 SDslu, 4377 SDs, 0 SdLazy, 2023 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=4, 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, 574 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 649 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 572022 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 102/115 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_40.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-26-40-278.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_40.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-26-40-278.csv Received shutdown request...