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/lis_unsafe_false-valid-deref.i_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:04:10,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:04:10,045 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:04:10,057 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:04:10,057 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:04:10,058 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:04:10,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:04:10,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:04:10,063 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:04:10,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:04:10,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:04:10,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:04:10,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:04:10,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:04:10,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:04:10,069 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:04:10,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:04:10,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:04:10,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:04:10,075 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:04:10,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:04:10,077 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:04:10,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 21:04:10,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 21:04:10,080 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 21:04:10,081 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 21:04:10,082 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 21:04:10,083 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 21:04:10,083 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 21:04:10,084 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 21:04:10,085 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 21:04:10,085 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-12 21:04:10,085 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 21:04:10,086 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 21:04:10,087 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 21:04:10,087 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 21:04:10,088 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 21:04:10,100 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:04:10,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:04:10,102 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:04:10,102 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:04:10,102 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:04:10,102 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:04:10,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:04:10,103 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:04:10,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:04:10,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:04:10,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:04:10,104 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:04:10,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:04:10,105 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:04:10,105 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:04:10,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:04:10,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:04:10,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:04:10,165 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:04:10,166 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:04:10,167 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/lis_unsafe_false-valid-deref.i_13.bpl [2018-10-12 21:04:10,167 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/lis_unsafe_false-valid-deref.i_13.bpl' [2018-10-12 21:04:10,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:04:10,254 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:04:10,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:04:10,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:04:10,255 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:04:10,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/1) ... [2018-10-12 21:04:10,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:04:10,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:04:10,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:04:10,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:04:10,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (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 21:04:10,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:04:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:04:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:04:10,941 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:04:10,942 INFO L202 PluginConnector]: Adding new model lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:04:10 BoogieIcfgContainer [2018-10-12 21:04:10,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:04:10,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:04:10,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:04:10,947 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:04:10,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:04:10" (1/2) ... [2018-10-12 21:04:10,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5fbf5 and model type lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:04:10, skipping insertion in model container [2018-10-12 21:04:10,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:04:10" (2/2) ... [2018-10-12 21:04:10,951 INFO L112 eAbstractionObserver]: Analyzing ICFG lis_unsafe_false-valid-deref.i_13.bpl [2018-10-12 21:04:10,961 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:04:10,970 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:04:10,988 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:04:11,017 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:04:11,018 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:04:11,018 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:04:11,019 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:04:11,019 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:04:11,019 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:04:11,019 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:04:11,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:04:11,019 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:04:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-10-12 21:04:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-12 21:04:11,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:04:11,062 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] [2018-10-12 21:04:11,065 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:04:11,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:04:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1306311009, now seen corresponding path program 1 times [2018-10-12 21:04:11,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:04:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:04:12,442 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 21:04:12,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:04:12,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-12 21:04:12,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-12 21:04:12,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-12 21:04:12,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-10-12 21:04:12,472 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 14 states. [2018-10-12 21:04:13,182 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-12 21:04:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:04:14,378 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2018-10-12 21:04:14,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-12 21:04:14,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2018-10-12 21:04:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:04:14,396 INFO L225 Difference]: With dead ends: 114 [2018-10-12 21:04:14,396 INFO L226 Difference]: Without dead ends: 114 [2018-10-12 21:04:14,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2018-10-12 21:04:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-12 21:04:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2018-10-12 21:04:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-12 21:04:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-10-12 21:04:14,450 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 51 [2018-10-12 21:04:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:04:14,451 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-10-12 21:04:14,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-12 21:04:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-10-12 21:04:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-12 21:04:14,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:04:14,456 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 21:04:14,457 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:04:14,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:04:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1018826803, now seen corresponding path program 1 times [2018-10-12 21:04:14,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:04:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:04:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:04:14,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:04:14,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-12 21:04:14,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 21:04:14,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 21:04:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-12 21:04:14,694 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 7 states. [2018-10-12 21:04:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:04:14,834 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-10-12 21:04:14,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-12 21:04:14,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2018-10-12 21:04:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:04:14,837 INFO L225 Difference]: With dead ends: 117 [2018-10-12 21:04:14,838 INFO L226 Difference]: Without dead ends: 113 [2018-10-12 21:04:14,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-12 21:04:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-12 21:04:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2018-10-12 21:04:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-12 21:04:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2018-10-12 21:04:14,849 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 65 [2018-10-12 21:04:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:04:14,849 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2018-10-12 21:04:14,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 21:04:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2018-10-12 21:04:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-12 21:04:14,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:04:14,853 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 21:04:14,853 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:04:14,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:04:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash 233789481, now seen corresponding path program 1 times [2018-10-12 21:04:14,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:04:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:04:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:04:15,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:04:15,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-12 21:04:15,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 21:04:15,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 21:04:15,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-12 21:04:15,015 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 9 states. [2018-10-12 21:04:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:04:15,222 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-10-12 21:04:15,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 21:04:15,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2018-10-12 21:04:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:04:15,230 INFO L225 Difference]: With dead ends: 121 [2018-10-12 21:04:15,230 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:04:15,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-12 21:04:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:04:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:04:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:04:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:04:15,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2018-10-12 21:04:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:04:15,233 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:04:15,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 21:04:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:04:15,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:04:15,239 INFO L202 PluginConnector]: Adding new model lis_unsafe_false-valid-deref.i_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:04:15 BoogieIcfgContainer [2018-10-12 21:04:15,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:04:15,242 INFO L168 Benchmark]: Toolchain (without parser) took 4989.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 243.2 MB). Peak memory consumption was 243.2 MB. Max. memory is 7.1 GB. [2018-10-12 21:04:15,243 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 21:04:15,244 INFO L168 Benchmark]: Boogie Preprocessor took 68.24 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 21:04:15,245 INFO L168 Benchmark]: RCFGBuilder took 619.23 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-12 21:04:15,247 INFO L168 Benchmark]: TraceAbstraction took 4297.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.5 MB). Peak memory consumption was 211.5 MB. Max. memory is 7.1 GB. [2018-10-12 21:04:15,252 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.24 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 619.23 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4297.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.5 MB). Peak memory consumption was 211.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 166]: 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, 83 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 190 SDtfs, 749 SDslu, 742 SDs, 0 SdLazy, 415 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred 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, 56 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 47138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 6/9 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/lis_unsafe_false-valid-deref.i_13.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-04-15-266.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_13.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-04-15-266.csv Received shutdown request...