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/stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:54:04,268 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:54:04,270 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:54:04,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:54:04,283 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:54:04,284 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:54:04,285 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:54:04,287 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:54:04,289 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:54:04,290 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:54:04,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:54:04,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:54:04,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:54:04,293 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:54:04,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:54:04,295 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:54:04,296 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:54:04,298 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:54:04,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:54:04,302 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:54:04,304 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:54:04,305 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:54:04,308 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:54:04,318 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:54:04,328 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:54:04,328 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:54:04,329 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:54:04,329 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:54:04,330 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:54:04,330 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:54:04,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:54:04,331 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:54:04,331 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:54:04,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:54:04,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:54:04,332 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:54:04,332 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:54:04,333 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:54:04,334 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:54:04,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:54:04,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:54:04,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:54:04,412 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:54:04,412 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:54:04,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-14 16:54:04,413 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl' [2018-10-14 16:54:04,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:54:04,498 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:54:04,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:54:04,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:54:04,500 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:54:04,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/1) ... [2018-10-14 16:54:04,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:54:04,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:54:04,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:54:04,566 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:54:04,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (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 [2018-10-14 16:54:04,640 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:54:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:54:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:54:05,130 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:54:05,131 INFO L202 PluginConnector]: Adding new model stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:05 BoogieIcfgContainer [2018-10-14 16:54:05,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:54:05,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:54:05,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:54:05,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:54:05,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:54:04" (1/2) ... [2018-10-14 16:54:05,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fd5a22 and model type stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:05, skipping insertion in model container [2018-10-14 16:54:05,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:05" (2/2) ... [2018-10-14 16:54:05,140 INFO L112 eAbstractionObserver]: Analyzing ICFG stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-14 16:54:05,150 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:54:05,159 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:54:05,175 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:54:05,207 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:54:05,207 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:54:05,207 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:54:05,208 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:54:05,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:54:05,208 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:54:05,208 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:54:05,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:54:05,208 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:54:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-10-14 16:54:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-14 16:54:05,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:05,237 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] [2018-10-14 16:54:05,239 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:05,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash 628514559, now seen corresponding path program 1 times [2018-10-14 16:54:05,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:06,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:54:06,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-14 16:54:06,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-14 16:54:06,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-14 16:54:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:54:06,319 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 15 states. [2018-10-14 16:54:07,192 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-14 16:54:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:08,233 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-14 16:54:08,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:54:08,236 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2018-10-14 16:54:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:08,248 INFO L225 Difference]: With dead ends: 68 [2018-10-14 16:54:08,248 INFO L226 Difference]: Without dead ends: 68 [2018-10-14 16:54:08,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:54:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-14 16:54:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2018-10-14 16:54:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-14 16:54:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-14 16:54:08,310 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 37 [2018-10-14 16:54:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:08,311 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-14 16:54:08,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-14 16:54:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-14 16:54:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-14 16:54:08,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:08,314 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:54:08,314 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:08,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:08,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2031596942, now seen corresponding path program 1 times [2018-10-14 16:54:08,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:08,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:08,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-14 16:54:08,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:54:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:54:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:54:08,802 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 17 states. [2018-10-14 16:54:10,364 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-10-14 16:54:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:10,472 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-14 16:54:10,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:54:10,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2018-10-14 16:54:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:10,476 INFO L225 Difference]: With dead ends: 84 [2018-10-14 16:54:10,476 INFO L226 Difference]: Without dead ends: 84 [2018-10-14 16:54:10,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:54:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-14 16:54:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2018-10-14 16:54:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-14 16:54:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-14 16:54:10,487 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 53 [2018-10-14 16:54:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:10,487 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-14 16:54:10,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:54:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-14 16:54:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-14 16:54:10,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:10,490 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-14 16:54:10,491 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:10,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash 292745189, now seen corresponding path program 2 times [2018-10-14 16:54:10,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:10,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:10,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:54:10,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:54:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:54:10,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:54:10,980 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 19 states. [2018-10-14 16:54:11,775 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-10-14 16:54:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:12,965 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-14 16:54:12,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-14 16:54:12,973 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2018-10-14 16:54:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:12,975 INFO L225 Difference]: With dead ends: 82 [2018-10-14 16:54:12,975 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:54:12,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2018-10-14 16:54:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:54:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:54:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:54:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:54:12,978 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2018-10-14 16:54:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:12,978 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:54:12,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:54:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:54:12,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:54:12,984 INFO L202 PluginConnector]: Adding new model stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:54:12 BoogieIcfgContainer [2018-10-14 16:54:12,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:54:12,985 INFO L168 Benchmark]: Toolchain (without parser) took 8487.58 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 32.5 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 99.4 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:54:12,986 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-14 16:54:12,987 INFO L168 Benchmark]: Boogie Preprocessor took 65.71 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. [2018-10-14 16:54:12,987 INFO L168 Benchmark]: RCFGBuilder took 566.32 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. [2018-10-14 16:54:12,988 INFO L168 Benchmark]: TraceAbstraction took 7851.01 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 32.5 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 78.3 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:54:12,992 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 0.21 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 65.71 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 566.32 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 7851.01 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 32.5 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 78.3 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: 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, 50 locations, 1 error locations. SAFE Result, 7.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 5.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 1317 SDslu, 808 SDs, 0 SdLazy, 684 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 83608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/34 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/stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-54-13-003.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-54-13-003.csv Received shutdown request...