java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:22:11,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:22:11,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:22:11,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:22:11,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:22:11,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:22:11,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:22:11,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:22:11,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:22:11,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:22:11,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:22:11,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:22:11,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:22:11,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:22:11,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:22:11,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:22:11,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:22:11,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:22:11,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:22:11,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:22:11,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:22:11,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:22:11,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:22:11,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:22:11,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:22:11,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:22:11,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:22:11,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:22:11,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 19:22:11,789 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:22:11,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:22:11,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:22:11,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:22:11,792 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:22:11,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:22:11,792 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:22:11,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:22:11,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:22:11,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:22:11,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:22:11,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:22:11,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:22:11,795 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:22:11,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:22:11,795 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:22:11,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:22:11,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:22:11,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:22:11,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:22:11,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:22:11,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:22:11,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:22:11,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:22:11,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:22:11,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:22:11,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:22:11,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:22:11,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:22:11,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:22:11,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:22:11,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:22:11,855 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:22:11,855 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:22:11,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2019-09-03 19:22:11,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a42f310/c7875e10d28648b7800f3fe6d881ec15/FLAG90432fec2 [2019-09-03 19:22:12,391 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:22:12,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2019-09-03 19:22:12,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a42f310/c7875e10d28648b7800f3fe6d881ec15/FLAG90432fec2 [2019-09-03 19:22:12,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a42f310/c7875e10d28648b7800f3fe6d881ec15 [2019-09-03 19:22:12,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:22:12,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:22:12,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:22:12,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:22:12,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:22:12,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:22:12" (1/1) ... [2019-09-03 19:22:12,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5aff1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:12, skipping insertion in model container [2019-09-03 19:22:12,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:22:12" (1/1) ... [2019-09-03 19:22:12,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:22:12,823 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:22:13,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:22:13,020 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:22:13,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:22:13,143 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:22:13,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13 WrapperNode [2019-09-03 19:22:13,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:22:13,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:22:13,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:22:13,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:22:13,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (1/1) ... [2019-09-03 19:22:13,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:22:13,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:22:13,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:22:13,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:22:13,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:22:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:22:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:22:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:22:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2019-09-03 19:22:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:22:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 19:22:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 19:22:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:22:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:22:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 19:22:13,483 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:22:13,484 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:22:13,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:22:13 BoogieIcfgContainer [2019-09-03 19:22:13,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:22:13,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:22:13,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:22:13,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:22:13,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:22:12" (1/3) ... [2019-09-03 19:22:13,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b7a53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:22:13, skipping insertion in model container [2019-09-03 19:22:13,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:13" (2/3) ... [2019-09-03 19:22:13,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b7a53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:22:13, skipping insertion in model container [2019-09-03 19:22:13,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:22:13" (3/3) ... [2019-09-03 19:22:13,499 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2019-09-03 19:22:13,507 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:22:13,514 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:22:13,530 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:22:13,557 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:22:13,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:22:13,558 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:22:13,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:22:13,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:22:13,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:22:13,558 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:22:13,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:22:13,559 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:22:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-03 19:22:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 19:22:13,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:13,578 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:13,580 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2019-09-03 19:22:13,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:13,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:13,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:13,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:13,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:13,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:22:13,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-03 19:22:13,938 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 19:22:13,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 19:22:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:22:13,956 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2019-09-03 19:22:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:14,132 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-09-03 19:22:14,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 19:22:14,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-09-03 19:22:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:14,142 INFO L225 Difference]: With dead ends: 55 [2019-09-03 19:22:14,142 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 19:22:14,146 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-03 19:22:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 19:22:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-03 19:22:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-03 19:22:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-09-03 19:22:14,187 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2019-09-03 19:22:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:14,188 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-09-03 19:22:14,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 19:22:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-09-03 19:22:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-03 19:22:14,190 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:14,190 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:14,190 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2019-09-03 19:22:14,191 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:14,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:14,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:14,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:14,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:14,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:14,394 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:14,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:14,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-03 19:22:14,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:14,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:22:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:14,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:14,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 14 [2019-09-03 19:22:14,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-03 19:22:14,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-03 19:22:14,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-09-03 19:22:14,662 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 14 states. [2019-09-03 19:22:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:14,897 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-09-03 19:22:14,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-03 19:22:14,898 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-09-03 19:22:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:14,903 INFO L225 Difference]: With dead ends: 34 [2019-09-03 19:22:14,903 INFO L226 Difference]: Without dead ends: 32 [2019-09-03 19:22:14,905 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-09-03 19:22:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-03 19:22:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-09-03 19:22:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 19:22:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-09-03 19:22:14,925 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2019-09-03 19:22:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:14,926 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-09-03 19:22:14,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-03 19:22:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-09-03 19:22:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-03 19:22:14,929 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:14,929 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:14,929 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2019-09-03 19:22:14,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:14,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:14,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:14,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:14,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 19:22:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 19:22:15,033 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 19:22:15,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:22:15 BoogieIcfgContainer [2019-09-03 19:22:15,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:22:15,079 INFO L168 Benchmark]: Toolchain (without parser) took 2281.67 ms. Allocated memory was 140.5 MB in the beginning and 226.5 MB in the end (delta: 86.0 MB). Free memory was 86.7 MB in the beginning and 173.2 MB in the end (delta: -86.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 19:22:15,080 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-03 19:22:15,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.06 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.4 MB in the beginning and 178.8 MB in the end (delta: -92.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:22:15,082 INFO L168 Benchmark]: Boogie Preprocessor took 38.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 176.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:22:15,083 INFO L168 Benchmark]: RCFGBuilder took 301.34 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 162.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:22:15,084 INFO L168 Benchmark]: TraceAbstraction took 1584.76 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 162.6 MB in the beginning and 173.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:22:15,088 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.06 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.4 MB in the beginning and 178.8 MB in the end (delta: -92.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.39 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 176.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 301.34 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 162.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1584.76 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 162.6 MB in the beginning and 173.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [\old(tmp)=12, \old(tmp)=10, tmp={0:0}] [L29] Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, bound={1:28}, pathbuf={1:0}, tmp={1:4}] [L35] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, pathbuf={1:0}, pathlim={1:28}, tmp={1:4}] [L16] Char *p; [L18] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, p={1:0}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={1:0}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={1:4}] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={1:4}] [L20] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={1:0}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L21] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={1:0}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={1:4}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={1:4}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={1:4}] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={1:4}] [L20] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={1:4}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L21] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={1:4}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={1:8}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={1:8}, pathbuf={1:0}, pathbuf={1:0}, pathlim={1:28}, pathlim={1:28}, tmp={1:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={1:4}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={1:4}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={1:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 48 SDslu, 139 SDs, 0 SdLazy, 174 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 4392 SizeOfPredicates, 8 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...