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_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:36:49,147 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:36:49,149 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:36:49,168 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:36:49,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:36:49,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:36:49,170 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:36:49,172 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:36:49,174 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:36:49,174 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:36:49,175 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:36:49,205 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 15:36:49,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:36:49,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:36:49,224 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:36:49,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:36:49,225 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:36:49,225 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:36:49,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:36:49,226 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:36:49,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:36:49,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:36:49,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:36:49,227 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:36:49,227 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:36:49,228 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:36:49,228 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:36:49,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:36:49,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:36:49,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:36:49,299 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:36:49,300 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:36:49,301 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/lis_unsafe_false-valid-deref.i_10.bpl [2018-10-10 15:36:49,301 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/lis_unsafe_false-valid-deref.i_10.bpl' [2018-10-10 15:36:49,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:36:49,363 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:36:49,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:36:49,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:36:49,364 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:36:49,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/1) ... [2018-10-10 15:36:49,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:36:49,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:36:49,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:36:49,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:36:49,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (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 15:36:49,483 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:36:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:36:49,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:36:49,978 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:36:49,980 INFO L202 PluginConnector]: Adding new model lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:36:49 BoogieIcfgContainer [2018-10-10 15:36:49,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:36:49,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:36:49,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:36:49,987 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:36:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:36:49" (1/2) ... [2018-10-10 15:36:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610e4f48 and model type lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:36:49, skipping insertion in model container [2018-10-10 15:36:49,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:36:49" (2/2) ... [2018-10-10 15:36:49,990 INFO L112 eAbstractionObserver]: Analyzing ICFG lis_unsafe_false-valid-deref.i_10.bpl [2018-10-10 15:36:50,002 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:36:50,014 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:36:50,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:36:50,064 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:36:50,065 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:36:50,065 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:36:50,065 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:36:50,065 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:36:50,066 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:36:50,066 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:36:50,067 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:36:50,067 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:36:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-10-10 15:36:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-10 15:36:50,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:50,111 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] [2018-10-10 15:36:50,112 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:50,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash -932621589, now seen corresponding path program 1 times [2018-10-10 15:36:50,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:50,887 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:36:51,303 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 15:36:51,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:36:51,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-10 15:36:51,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 15:36:51,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 15:36:51,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:36:51,332 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 14 states. [2018-10-10 15:36:52,066 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-10 15:36:52,254 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-10 15:36:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:53,018 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-10 15:36:53,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-10 15:36:53,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2018-10-10 15:36:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:53,039 INFO L225 Difference]: With dead ends: 83 [2018-10-10 15:36:53,039 INFO L226 Difference]: Without dead ends: 83 [2018-10-10 15:36:53,042 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 [2018-10-10 15:36:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-10 15:36:53,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2018-10-10 15:36:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-10 15:36:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-10 15:36:53,088 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 48 [2018-10-10 15:36:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:53,089 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-10 15:36:53,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 15:36:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-10 15:36:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 15:36:53,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:53,092 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:36:53,092 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:53,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash 150512437, now seen corresponding path program 1 times [2018-10-10 15:36:53,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:53,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:53,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-10 15:36:53,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-10 15:36:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-10 15:36:53,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-10-10 15:36:53,734 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 17 states. [2018-10-10 15:36:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:55,430 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-10 15:36:55,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-10 15:36:55,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2018-10-10 15:36:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:55,433 INFO L225 Difference]: With dead ends: 103 [2018-10-10 15:36:55,433 INFO L226 Difference]: Without dead ends: 103 [2018-10-10 15:36:55,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2018-10-10 15:36:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-10 15:36:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2018-10-10 15:36:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-10 15:36:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-10 15:36:55,445 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 68 [2018-10-10 15:36:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:55,446 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-10 15:36:55,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-10 15:36:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-10 15:36:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-10 15:36:55,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:36:55,449 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-10-10 15:36:55,450 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:36:55,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:36:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash -587797889, now seen corresponding path program 2 times [2018-10-10 15:36:55,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:36:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:36:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:36:56,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:36:56,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-10 15:36:56,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-10 15:36:56,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-10 15:36:56,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:36:56,271 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 20 states. [2018-10-10 15:36:56,757 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-10 15:36:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:36:58,367 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-10 15:36:58,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-10 15:36:58,368 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-10-10 15:36:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:36:58,370 INFO L225 Difference]: With dead ends: 101 [2018-10-10 15:36:58,370 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:36:58,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=420, Invalid=1472, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:36:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:36:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:36:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:36:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:36:58,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2018-10-10 15:36:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:36:58,373 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:36:58,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-10 15:36:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:36:58,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:36:58,378 INFO L202 PluginConnector]: Adding new model lis_unsafe_false-valid-deref.i_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:36:58 BoogieIcfgContainer [2018-10-10 15:36:58,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:36:58,380 INFO L168 Benchmark]: Toolchain (without parser) took 9018.08 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.3 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 132.3 MB). Peak memory consumption was 160.6 MB. Max. memory is 7.1 GB. [2018-10-10 15:36:58,381 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 15:36:58,382 INFO L168 Benchmark]: Boogie Preprocessor took 53.50 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 15:36:58,382 INFO L168 Benchmark]: RCFGBuilder took 562.99 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. [2018-10-10 15:36:58,383 INFO L168 Benchmark]: TraceAbstraction took 8397.45 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.3 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 100.6 MB). Peak memory consumption was 128.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:36:58,390 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 53.50 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 562.99 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 8397.45 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 28.3 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 100.6 MB). Peak memory consumption was 128.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 136]: 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, 66 locations, 1 error locations. SAFE Result, 8.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 5.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 131 SDtfs, 1259 SDslu, 786 SDs, 0 SdLazy, 1074 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 141727 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/35 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_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-36-58-408.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_10.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-36-58-408.csv Received shutdown request...