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/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:06:27,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:06:27,079 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:06:27,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:06:27,092 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:06:27,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:06:27,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:06:27,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:06:27,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:06:27,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:06:27,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:06:27,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:06:27,100 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:06:27,101 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:06:27,102 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:06:27,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:06:27,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:06:27,107 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:06:27,114 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:06:27,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:06:27,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:06:27,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:06:27,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 21:06:27,127 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 21:06:27,127 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 21:06:27,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 21:06:27,132 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 21:06:27,133 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 21:06:27,134 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 21:06:27,138 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 21:06:27,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 21:06:27,139 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-12 21:06:27,140 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 21:06:27,140 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 21:06:27,141 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 21:06:27,141 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 21:06:27,144 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 21:06:27,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:06:27,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:06:27,164 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:06:27,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:06:27,165 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:06:27,165 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:06:27,166 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:06:27,166 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:06:27,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:06:27,166 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:06:27,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:06:27,167 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:06:27,167 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:06:27,168 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:06:27,168 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:06:27,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:06:27,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:06:27,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:06:27,226 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:06:27,227 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:06:27,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-12 21:06:27,228 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl' [2018-10-12 21:06:27,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:06:27,301 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:06:27,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:06:27,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:06:27,302 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:06:27,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/1) ... [2018-10-12 21:06:27,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:06:27,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:06:27,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:06:27,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:06:27,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (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 21:06:27,438 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:06:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:06:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:06:27,987 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:06:27,988 INFO L202 PluginConnector]: Adding new model openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:06:27 BoogieIcfgContainer [2018-10-12 21:06:27,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:06:27,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:06:27,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:06:27,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:06:27,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:06:27" (1/2) ... [2018-10-12 21:06:27,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddc67d9 and model type openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:06:27, skipping insertion in model container [2018-10-12 21:06:27,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:06:27" (2/2) ... [2018-10-12 21:06:27,996 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl [2018-10-12 21:06:28,006 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:06:28,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:06:28,031 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:06:28,059 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:06:28,060 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:06:28,060 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:06:28,060 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:06:28,060 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:06:28,061 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:06:28,061 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:06:28,061 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:06:28,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:06:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-10-12 21:06:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-12 21:06:28,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:28,087 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] [2018-10-12 21:06:28,088 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:28,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:28,095 INFO L82 PathProgramCache]: Analyzing trace with hash 795875999, now seen corresponding path program 1 times [2018-10-12 21:06:28,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:29,104 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 21:06:29,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:06:29,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-12 21:06:29,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-12 21:06:29,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-12 21:06:29,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-12 21:06:29,136 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 13 states. [2018-10-12 21:06:29,906 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-12 21:06:30,177 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-12 21:06:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:06:30,628 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-12 21:06:30,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-12 21:06:30,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2018-10-12 21:06:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:06:30,643 INFO L225 Difference]: With dead ends: 71 [2018-10-12 21:06:30,644 INFO L226 Difference]: Without dead ends: 71 [2018-10-12 21:06:30,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-12 21:06:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-12 21:06:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2018-10-12 21:06:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-12 21:06:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-12 21:06:30,687 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 42 [2018-10-12 21:06:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:06:30,688 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-12 21:06:30,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-12 21:06:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-12 21:06:30,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-12 21:06:30,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:30,691 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 21:06:30,692 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:30,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash 667417652, now seen corresponding path program 1 times [2018-10-12 21:06:30,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:06:31,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:06:31,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-12 21:06:31,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-12 21:06:31,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-12 21:06:31,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2018-10-12 21:06:31,620 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 22 states. [2018-10-12 21:06:33,378 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-12 21:06:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:06:34,338 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-12 21:06:34,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-12 21:06:34,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2018-10-12 21:06:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:06:34,341 INFO L225 Difference]: With dead ends: 86 [2018-10-12 21:06:34,342 INFO L226 Difference]: Without dead ends: 86 [2018-10-12 21:06:34,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=455, Invalid=1525, Unknown=0, NotChecked=0, Total=1980 [2018-10-12 21:06:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-12 21:06:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2018-10-12 21:06:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-12 21:06:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-12 21:06:34,354 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 57 [2018-10-12 21:06:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:06:34,354 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-12 21:06:34,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-12 21:06:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-12 21:06:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-12 21:06:34,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:34,357 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-12 21:06:34,358 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:34,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 343416319, now seen corresponding path program 2 times [2018-10-12 21:06:34,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:06:35,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:06:35,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-12 21:06:35,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-12 21:06:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-12 21:06:35,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2018-10-12 21:06:35,118 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 27 states. [2018-10-12 21:06:36,252 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-10-12 21:06:37,357 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-12 21:06:37,577 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-12 21:06:38,173 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-10-12 21:06:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:06:38,974 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-12 21:06:38,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 21:06:38,982 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2018-10-12 21:06:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:06:38,984 INFO L225 Difference]: With dead ends: 101 [2018-10-12 21:06:38,984 INFO L226 Difference]: Without dead ends: 101 [2018-10-12 21:06:38,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=617, Invalid=2575, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:06:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-12 21:06:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2018-10-12 21:06:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-12 21:06:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-12 21:06:38,996 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 72 [2018-10-12 21:06:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:06:38,996 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-12 21:06:38,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-12 21:06:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-12 21:06:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-12 21:06:38,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:06:38,998 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:38,999 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:06:38,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:06:38,999 INFO L82 PathProgramCache]: Analyzing trace with hash -569586476, now seen corresponding path program 3 times [2018-10-12 21:06:39,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:06:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:06:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 61 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-12 21:06:40,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:06:40,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-12 21:06:40,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-12 21:06:40,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-12 21:06:40,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2018-10-12 21:06:40,193 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 32 states. [2018-10-12 21:06:42,006 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-12 21:06:42,149 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-12 21:06:42,405 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-12 21:06:42,603 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-12 21:06:42,959 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-10-12 21:06:43,104 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-12 21:06:43,272 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2018-10-12 21:06:43,563 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 21:06:52,717 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-10-12 21:06:53,037 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-10-12 21:06:53,197 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-10-12 21:06:53,363 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 21:07:06,821 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-12 21:07:06,962 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2018-10-12 21:07:07,149 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-12 21:07:07,409 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-10-12 21:07:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:07:07,430 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-12 21:07:07,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 21:07:07,433 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2018-10-12 21:07:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:07:07,434 INFO L225 Difference]: With dead ends: 86 [2018-10-12 21:07:07,434 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:07:07,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=736, Invalid=3046, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 21:07:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:07:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:07:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:07:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:07:07,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2018-10-12 21:07:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:07:07,437 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:07:07,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-12 21:07:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:07:07,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:07:07,443 INFO L202 PluginConnector]: Adding new model openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:07:07 BoogieIcfgContainer [2018-10-12 21:07:07,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:07:07,444 INFO L168 Benchmark]: Toolchain (without parser) took 40143.60 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 379.9 MB). Peak memory consumption was 510.0 MB. Max. memory is 7.1 GB. [2018-10-12 21:07:07,445 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:07:07,446 INFO L168 Benchmark]: Boogie Preprocessor took 56.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:07:07,447 INFO L168 Benchmark]: RCFGBuilder took 628.93 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-12 21:07:07,447 INFO L168 Benchmark]: TraceAbstraction took 39453.98 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 358.8 MB). Peak memory consumption was 488.8 MB. Max. memory is 7.1 GB. [2018-10-12 21:07:07,451 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 628.93 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39453.98 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 130.0 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 358.8 MB). Peak memory consumption was 488.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: 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, 39.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 35.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 2033 SDslu, 1709 SDs, 0 SdLazy, 1881 SolverSat, 173 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 25.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 186513 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 14/120 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/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-07-07-462.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_5.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-07-07-462.csv Received shutdown request...