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/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:44:25,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:44:25,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:44:25,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:44:25,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:44:25,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:44:25,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:44:25,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:44:25,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:44:25,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:44:25,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:44:25,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:44:25,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:44:25,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:44:25,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:44:25,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:44:25,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:44:25,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:44:25,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:44:25,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:44:25,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:44:25,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:44:25,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:44:25,516 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 20:44:25,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:44:25,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:44:25,534 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:44:25,534 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:44:25,534 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:44:25,535 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:44:25,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:44:25,536 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:44:25,536 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:44:25,536 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:44:25,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:44:25,536 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:44:25,537 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:44:25,537 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:44:25,538 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:44:25,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:44:25,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:44:25,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:44:25,603 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:44:25,603 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:44:25,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl [2018-10-12 20:44:25,604 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl' [2018-10-12 20:44:25,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:44:25,694 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:44:25,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:44:25,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:44:25,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:44:25,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/1) ... [2018-10-12 20:44:25,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:44:25,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:44:25,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:44:25,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:44:25,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (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 20:44:25,838 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:44:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:44:25,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:44:26,410 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:44:26,411 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:44:26 BoogieIcfgContainer [2018-10-12 20:44:26,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:44:26,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:44:26,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:44:26,416 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:44:26,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:44:25" (1/2) ... [2018-10-12 20:44:26,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48028c32 and model type ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:44:26, skipping insertion in model container [2018-10-12 20:44:26,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:44:26" (2/2) ... [2018-10-12 20:44:26,419 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl [2018-10-12 20:44:26,429 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:44:26,438 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:44:26,455 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:44:26,484 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:44:26,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:44:26,485 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:44:26,485 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:44:26,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:44:26,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:44:26,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:44:26,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:44:26,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:44:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2018-10-12 20:44:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-12 20:44:26,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:26,536 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] [2018-10-12 20:44:26,540 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:26,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1758635983, now seen corresponding path program 1 times [2018-10-12 20:44:26,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:26,974 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 20:44:26,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:44:26,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-12 20:44:26,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-12 20:44:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-12 20:44:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-12 20:44:27,003 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 6 states. [2018-10-12 20:44:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:27,355 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2018-10-12 20:44:27,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:44:27,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-10-12 20:44:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:27,371 INFO L225 Difference]: With dead ends: 151 [2018-10-12 20:44:27,371 INFO L226 Difference]: Without dead ends: 151 [2018-10-12 20:44:27,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:44:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-12 20:44:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2018-10-12 20:44:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-12 20:44:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-10-12 20:44:27,429 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 41 [2018-10-12 20:44:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:27,430 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-10-12 20:44:27,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-12 20:44:27,430 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-10-12 20:44:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-12 20:44:27,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:27,434 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:44:27,435 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:27,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash -647362578, now seen corresponding path program 1 times [2018-10-12 20:44:27,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:28,816 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 20:44:28,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:28,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 20:44:28,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 20:44:28,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 20:44:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2018-10-12 20:44:28,820 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 19 states. [2018-10-12 20:44:31,412 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-10-12 20:44:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:31,592 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2018-10-12 20:44:31,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-12 20:44:31,593 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 95 [2018-10-12 20:44:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:31,596 INFO L225 Difference]: With dead ends: 219 [2018-10-12 20:44:31,596 INFO L226 Difference]: Without dead ends: 219 [2018-10-12 20:44:31,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2018-10-12 20:44:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-12 20:44:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 117. [2018-10-12 20:44:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-12 20:44:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-10-12 20:44:31,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 95 [2018-10-12 20:44:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:31,613 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-10-12 20:44:31,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 20:44:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-10-12 20:44:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-12 20:44:31,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:31,618 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] [2018-10-12 20:44:31,618 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:31,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:31,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2012601375, now seen corresponding path program 1 times [2018-10-12 20:44:31,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:44:31,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:31,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-12 20:44:31,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:44:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:44:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:44:31,848 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 10 states. [2018-10-12 20:44:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:32,782 INFO L93 Difference]: Finished difference Result 268 states and 271 transitions. [2018-10-12 20:44:32,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-12 20:44:32,785 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 116 [2018-10-12 20:44:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:32,788 INFO L225 Difference]: With dead ends: 268 [2018-10-12 20:44:32,789 INFO L226 Difference]: Without dead ends: 268 [2018-10-12 20:44:32,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2018-10-12 20:44:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-12 20:44:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 192. [2018-10-12 20:44:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-12 20:44:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 195 transitions. [2018-10-12 20:44:32,805 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 195 transitions. Word has length 116 [2018-10-12 20:44:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:32,806 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 195 transitions. [2018-10-12 20:44:32,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:44:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 195 transitions. [2018-10-12 20:44:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-12 20:44:32,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:32,809 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:32,810 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:32,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:32,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1931132318, now seen corresponding path program 2 times [2018-10-12 20:44:32,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 76 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-12 20:44:33,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:33,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-12 20:44:33,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:44:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:44:33,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:44:33,589 INFO L87 Difference]: Start difference. First operand 192 states and 195 transitions. Second operand 8 states. [2018-10-12 20:44:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:33,734 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-10-12 20:44:33,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:44:33,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2018-10-12 20:44:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:33,737 INFO L225 Difference]: With dead ends: 230 [2018-10-12 20:44:33,738 INFO L226 Difference]: Without dead ends: 230 [2018-10-12 20:44:33,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:44:33,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-12 20:44:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 192. [2018-10-12 20:44:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-12 20:44:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2018-10-12 20:44:33,751 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 170 [2018-10-12 20:44:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:33,752 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2018-10-12 20:44:33,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:44:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2018-10-12 20:44:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-12 20:44:33,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:44:33,756 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:44:33,756 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:44:33,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:44:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1475454833, now seen corresponding path program 3 times [2018-10-12 20:44:33,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:44:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:44:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 92 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-12 20:44:34,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:44:34,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-12 20:44:34,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:44:34,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:44:34,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:44:34,098 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand 10 states. [2018-10-12 20:44:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:44:34,416 INFO L93 Difference]: Finished difference Result 121 states and 120 transitions. [2018-10-12 20:44:34,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:44:34,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2018-10-12 20:44:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:44:34,417 INFO L225 Difference]: With dead ends: 121 [2018-10-12 20:44:34,417 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:44:34,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-10-12 20:44:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:44:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:44:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:44:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:44:34,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 191 [2018-10-12 20:44:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:44:34,419 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:44:34,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:44:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:44:34,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:44:34,425 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:44:34 BoogieIcfgContainer [2018-10-12 20:44:34,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:44:34,427 INFO L168 Benchmark]: Toolchain (without parser) took 8733.31 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 130.0 MB). Peak memory consumption was 151.5 MB. Max. memory is 7.1 GB. [2018-10-12 20:44:34,429 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:44:34,429 INFO L168 Benchmark]: Boogie Preprocessor took 70.23 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 20:44:34,430 INFO L168 Benchmark]: RCFGBuilder took 645.26 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 20:44:34,431 INFO L168 Benchmark]: TraceAbstraction took 8013.75 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 98.3 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2018-10-12 20:44:34,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.23 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 645.26 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 8013.75 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 98.3 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 178]: 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, 95 locations, 1 error locations. SAFE Result, 7.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 525 SDtfs, 2384 SDslu, 2594 SDs, 0 SdLazy, 778 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred 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, 254 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 613 NumberOfCodeBlocks, 613 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 272358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 182/272 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/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-44-34-447.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-44-34-447.csv Received shutdown request...