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/array3_false-valid-deref.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:28:05,070 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:28:05,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:28:05,086 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:28:05,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:28:05,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:28:05,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:28:05,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:28:05,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:28:05,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:28:05,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:28:05,110 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 15:28:05,110 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 15:28:05,111 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 15:28:05,112 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 15:28:05,113 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 15:28:05,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 15:28:05,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 15:28:05,115 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 15:28:05,116 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-10 15:28:05,118 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 15:28:05,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:28:05,128 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:28:05,129 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:28:05,129 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:28:05,129 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:28:05,130 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:28:05,130 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:28:05,130 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:28:05,131 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:28:05,131 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:28:05,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:28:05,131 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:28:05,132 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:28:05,132 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:28:05,133 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:28:05,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:28:05,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:28:05,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:28:05,194 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:28:05,195 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:28:05,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/array3_false-valid-deref.i_5.bpl [2018-10-10 15:28:05,196 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/array3_false-valid-deref.i_5.bpl' [2018-10-10 15:28:05,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:28:05,285 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:28:05,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:28:05,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:28:05,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:28:05,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/1) ... [2018-10-10 15:28:05,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:28:05,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:28:05,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:28:05,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:28:05,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (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 15:28:05,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:28:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:28:05,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:28:05,839 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:28:05,840 INFO L202 PluginConnector]: Adding new model array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:28:05 BoogieIcfgContainer [2018-10-10 15:28:05,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:28:05,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:28:05,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:28:05,849 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:28:05,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:28:05" (1/2) ... [2018-10-10 15:28:05,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678cb662 and model type array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:28:05, skipping insertion in model container [2018-10-10 15:28:05,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:28:05" (2/2) ... [2018-10-10 15:28:05,854 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_false-valid-deref.i_5.bpl [2018-10-10 15:28:05,867 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:28:05,881 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:28:05,904 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:28:05,943 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:28:05,944 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:28:05,944 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:28:05,944 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:28:05,944 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:28:05,944 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:28:05,945 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:28:05,945 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:28:05,945 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:28:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-10-10 15:28:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-10 15:28:05,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:05,994 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] [2018-10-10 15:28:05,996 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:06,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:06,009 INFO L82 PathProgramCache]: Analyzing trace with hash -157830048, now seen corresponding path program 1 times [2018-10-10 15:28:06,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:06,263 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 15:28:06,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:28:06,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:28:06,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:28:06,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:28:06,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:06,296 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2018-10-10 15:28:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:06,394 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-10 15:28:06,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:28:06,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-10 15:28:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:06,407 INFO L225 Difference]: With dead ends: 49 [2018-10-10 15:28:06,408 INFO L226 Difference]: Without dead ends: 49 [2018-10-10 15:28:06,410 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 15:28:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-10 15:28:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2018-10-10 15:28:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-10 15:28:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-10 15:28:06,451 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 22 [2018-10-10 15:28:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:06,451 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-10 15:28:06,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:28:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-10 15:28:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-10 15:28:06,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:06,453 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] [2018-10-10 15:28:06,454 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:06,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:06,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1692591673, now seen corresponding path program 1 times [2018-10-10 15:28:06,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:06,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:06,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-10 15:28:06,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 15:28:06,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 15:28:06,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-10 15:28:06,624 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 5 states. [2018-10-10 15:28:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:06,873 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-10 15:28:06,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 15:28:06,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-10-10 15:28:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:06,875 INFO L225 Difference]: With dead ends: 63 [2018-10-10 15:28:06,875 INFO L226 Difference]: Without dead ends: 63 [2018-10-10 15:28:06,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:28:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-10 15:28:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2018-10-10 15:28:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-10 15:28:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-10 15:28:06,884 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 36 [2018-10-10 15:28:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:06,885 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-10 15:28:06,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 15:28:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-10 15:28:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-10 15:28:06,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:06,887 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:28:06,888 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:06,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1639880622, now seen corresponding path program 2 times [2018-10-10 15:28:06,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-10 15:28:07,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:28:07,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-10 15:28:07,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-10 15:28:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-10 15:28:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-10 15:28:07,163 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 5 states. [2018-10-10 15:28:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:07,308 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-10 15:28:07,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-10 15:28:07,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-10-10 15:28:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:07,309 INFO L225 Difference]: With dead ends: 49 [2018-10-10 15:28:07,310 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:28:07,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:28:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:28:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:28:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:28:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:28:07,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2018-10-10 15:28:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:07,314 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:28:07,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-10 15:28:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:28:07,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:28:07,321 INFO L202 PluginConnector]: Adding new model array3_false-valid-deref.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:28:07 BoogieIcfgContainer [2018-10-10 15:28:07,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:28:07,322 INFO L168 Benchmark]: Toolchain (without parser) took 2039.31 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:07,326 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-10-10 15:28:07,327 INFO L168 Benchmark]: Boogie Preprocessor took 57.03 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. [2018-10-10 15:28:07,328 INFO L168 Benchmark]: RCFGBuilder took 497.23 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:07,329 INFO L168 Benchmark]: TraceAbstraction took 1477.92 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:07,336 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 0.22 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 57.03 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 497.23 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1477.92 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: 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, 38 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 63 SDslu, 133 SDs, 0 SdLazy, 69 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 12607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 16/17 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/array3_false-valid-deref.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-28-07-352.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array3_false-valid-deref.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-28-07-352.csv Received shutdown request...