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_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 21:07:09,875 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:07:09,877 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:07:09,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:07:09,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:07:09,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:07:09,894 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:07:09,895 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:07:09,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:07:09,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:07:09,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 21:07:09,899 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 21:07:09,900 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 21:07:09,901 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 21:07:09,902 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 21:07:09,903 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 21:07:09,904 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 21:07:09,906 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 21:07:09,907 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 21:07:09,909 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 21:07:09,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 21:07:09,911 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 21:07:09,914 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 21:07:09,914 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 21:07:09,914 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 21:07:09,915 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 21:07:09,916 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 21:07:09,917 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 21:07:09,918 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 21:07:09,919 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 21:07:09,919 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 21:07:09,920 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-12 21:07:09,922 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 21:07:09,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:07:09,932 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:07:09,933 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:07:09,933 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:07:09,933 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:07:09,934 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:07:09,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:07:09,935 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:07:09,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:07:09,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:07:09,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:07:09,936 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:07:09,936 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:07:09,937 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:07:09,937 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:07:09,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:07:09,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:07:09,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:07:09,996 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:07:09,996 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:07:09,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-12 21:07:09,997 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl' [2018-10-12 21:07:10,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:07:10,058 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:07:10,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:07:10,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:07:10,059 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:07:10,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... [2018-10-12 21:07:10,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:07:10,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:07:10,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:07:10,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:07:10,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:07:10,192 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:07:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:07:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:07:10,766 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:07:10,768 INFO L202 PluginConnector]: Adding new model openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:07:10 BoogieIcfgContainer [2018-10-12 21:07:10,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:07:10,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:07:10,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:07:10,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:07:10,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 09:07:10" (1/2) ... [2018-10-12 21:07:10,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae69722 and model type openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:07:10, skipping insertion in model container [2018-10-12 21:07:10,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:07:10" (2/2) ... [2018-10-12 21:07:10,776 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-12 21:07:10,786 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:07:10,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:07:10,815 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:07:10,842 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:07:10,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:07:10,843 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:07:10,843 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:07:10,843 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:07:10,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:07:10,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:07:10,843 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:07:10,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:07:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-10-12 21:07:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-12 21:07:10,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:07:10,871 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] [2018-10-12 21:07:10,872 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:07:10,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:07:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash -185030526, now seen corresponding path program 1 times [2018-10-12 21:07:10,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:07:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:07:11,742 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 21:07:11,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:07:11,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-12 21:07:11,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-12 21:07:11,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-12 21:07:11,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-10-12 21:07:11,770 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 13 states. [2018-10-12 21:07:12,296 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-12 21:07:12,762 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-12 21:07:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:07:13,361 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-12 21:07:13,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-12 21:07:13,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2018-10-12 21:07:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:07:13,379 INFO L225 Difference]: With dead ends: 74 [2018-10-12 21:07:13,380 INFO L226 Difference]: Without dead ends: 74 [2018-10-12 21:07:13,382 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 21:07:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-12 21:07:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 59. [2018-10-12 21:07:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-12 21:07:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-12 21:07:13,422 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 41 [2018-10-12 21:07:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:07:13,423 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-12 21:07:13,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-12 21:07:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-12 21:07:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-12 21:07:13,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:07:13,426 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] [2018-10-12 21:07:13,426 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:07:13,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:07:13,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1024515603, now seen corresponding path program 1 times [2018-10-12 21:07:13,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:07:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:07:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:07:14,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:07:14,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 21:07:14,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 21:07:14,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 21:07:14,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-10-12 21:07:14,349 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 19 states. [2018-10-12 21:07:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:07:16,552 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-12 21:07:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-12 21:07:16,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2018-10-12 21:07:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:07:16,557 INFO L225 Difference]: With dead ends: 91 [2018-10-12 21:07:16,557 INFO L226 Difference]: Without dead ends: 91 [2018-10-12 21:07:16,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2018-10-12 21:07:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-12 21:07:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2018-10-12 21:07:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-12 21:07:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-12 21:07:16,569 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 58 [2018-10-12 21:07:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:07:16,569 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-12 21:07:16,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 21:07:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-12 21:07:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-12 21:07:16,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:07:16,572 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-10-12 21:07:16,573 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:07:16,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:07:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1301652318, now seen corresponding path program 2 times [2018-10-12 21:07:16,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:07:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:07:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:07:17,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:07:17,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-12 21:07:17,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-12 21:07:17,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-12 21:07:17,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2018-10-12 21:07:17,402 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 23 states. [2018-10-12 21:07:17,737 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-12 21:07:19,403 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-12 21:07:19,637 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2018-10-12 21:07:19,839 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-12 21:07:20,035 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-12 21:07:20,209 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-12 21:07:20,410 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-10-12 21:07:20,575 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-12 21:07:20,708 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 21:07:20,882 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:07:21,132 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-10-12 21:07:21,335 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 21:07:21,637 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 21:07:21,842 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-12 21:07:22,103 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-12 21:07:22,316 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-12 21:07:22,502 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-10-12 21:07:22,707 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:07:22,989 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-12 21:07:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:07:22,999 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-12 21:07:23,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 21:07:23,000 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2018-10-12 21:07:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:07:23,002 INFO L225 Difference]: With dead ends: 89 [2018-10-12 21:07:23,002 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:07:23,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=584, Invalid=2172, Unknown=0, NotChecked=0, Total=2756 [2018-10-12 21:07:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:07:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:07:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:07:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:07:23,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2018-10-12 21:07:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:07:23,006 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:07:23,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-12 21:07:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:07:23,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:07:23,011 INFO L202 PluginConnector]: Adding new model openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:07:23 BoogieIcfgContainer [2018-10-12 21:07:23,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:07:23,012 INFO L168 Benchmark]: Toolchain (without parser) took 12955.21 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 119.0 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -64.8 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2018-10-12 21:07:23,014 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. [2018-10-12 21:07:23,014 INFO L168 Benchmark]: Boogie Preprocessor took 53.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:07:23,015 INFO L168 Benchmark]: RCFGBuilder took 654.91 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. [2018-10-12 21:07:23,016 INFO L168 Benchmark]: TraceAbstraction took 12242.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 119.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -85.9 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-10-12 21:07:23,020 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 53.47 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 654.91 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 12242.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 119.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -85.9 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 118]: 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, 56 locations, 1 error locations. SAFE Result, 12.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 9.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 1312 SDslu, 1277 SDs, 0 SdLazy, 983 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 105047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/32 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_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-07-23-031.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_21-07-23-031.csv Received shutdown request...