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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/alias_of_return.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:46:27,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:46:27,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:46:27,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 12:46:27,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 12:46:27,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 12:46:27,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 12:46:27,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 12:46:27,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 12:46:27,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 12:46:27,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 12:46:27,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 12:46:27,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:46:27,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:46:27,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:46:27,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:46:27,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:46:27,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:46:27,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:46:27,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:46:27,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:46:27,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:46:27,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:46:27,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:46:27,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 12:46:27,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:46:27,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:46:27,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:46:27,850 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 [2019-10-07 12:46:27,865 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:46:27,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:46:27,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:46:27,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:46:27,867 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:46:27,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:46:27,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:46:27,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:46:27,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:46:27,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:46:27,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:46:27,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:46:27,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:46:27,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:46:27,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:46:27,869 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:46:27,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:46:27,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:46:27,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:46:27,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:46:27,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:46:27,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:46:27,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:46:27,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:46:27,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:46:27,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:46:27,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:46:27,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:46:27,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 12:46:28,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:46:28,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:46:28,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:46:28,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:46:28,195 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:46:28,196 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-07 12:46:28,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c12c617/83c27b98eb6d4fc68bc111e22947b6e2/FLAG80a032f82 [2019-10-07 12:46:28,698 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:46:28,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-07 12:46:28,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c12c617/83c27b98eb6d4fc68bc111e22947b6e2/FLAG80a032f82 [2019-10-07 12:46:29,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c12c617/83c27b98eb6d4fc68bc111e22947b6e2 [2019-10-07 12:46:29,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:46:29,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:46:29,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:46:29,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:46:29,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:46:29,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a11b6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29, skipping insertion in model container [2019-10-07 12:46:29,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,161 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:46:29,179 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:46:29,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:46:29,380 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:46:29,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:46:29,417 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:46:29,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29 WrapperNode [2019-10-07 12:46:29,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:46:29,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:46:29,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:46:29,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:46:29,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (1/1) ... [2019-10-07 12:46:29,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:46:29,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:46:29,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:46:29,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:46:29,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (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 [2019-10-07 12:46:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:46:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:46:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-07 12:46:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self [2019-10-07 12:46:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:46:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:46:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-07 12:46:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure return_self [2019-10-07 12:46:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:46:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 12:46:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 12:46:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 12:46:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 12:46:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:46:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:46:29,947 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:46:29,948 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 12:46:29,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:46:29 BoogieIcfgContainer [2019-10-07 12:46:29,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:46:29,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:46:29,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:46:29,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:46:29,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:46:29" (1/3) ... [2019-10-07 12:46:29,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aed3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:46:29, skipping insertion in model container [2019-10-07 12:46:29,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:46:29" (2/3) ... [2019-10-07 12:46:29,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aed3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:46:29, skipping insertion in model container [2019-10-07 12:46:29,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:46:29" (3/3) ... [2019-10-07 12:46:29,957 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return.i [2019-10-07 12:46:29,972 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:46:29,981 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 12:46:29,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 12:46:30,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:46:30,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:46:30,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:46:30,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:46:30,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:46:30,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:46:30,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:46:30,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:46:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-07 12:46:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 12:46:30,047 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:46:30,048 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:46:30,050 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:46:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:46:30,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1337820828, now seen corresponding path program 1 times [2019-10-07 12:46:30,065 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:46:30,065 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:46:30,065 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:46:30,065 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:46:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:46:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:46:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:46:30,278 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:46:30,279 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:46:30,279 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 12:46:30,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 12:46:30,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 12:46:30,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:46:30,298 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-10-07 12:46:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:46:30,348 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-10-07 12:46:30,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 12:46:30,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-07 12:46:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:46:30,357 INFO L225 Difference]: With dead ends: 22 [2019-10-07 12:46:30,357 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 12:46:30,361 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:46:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 12:46:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 12:46:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 12:46:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 12:46:30,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-07 12:46:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:46:30,387 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 12:46:30,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 12:46:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 12:46:30,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 12:46:30,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 12:46:30,426 INFO L446 ceAbstractionStarter]: At program point return_selfENTRY(lines 11 14) the Hoare annotation is: true [2019-10-07 12:46:30,427 INFO L443 ceAbstractionStarter]: For program point return_selfEXIT(lines 11 14) no Hoare annotation was computed. [2019-10-07 12:46:30,427 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:46:30,427 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:46:30,427 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-10-07 12:46:30,427 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 7 8) no Hoare annotation was computed. [2019-10-07 12:46:30,428 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 7 8) the Hoare annotation is: true [2019-10-07 12:46:30,428 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:46:30,428 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 12:46:30,428 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:46:30,428 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 12:46:30,429 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: true [2019-10-07 12:46:30,429 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-10-07 12:46:30,429 INFO L439 ceAbstractionStarter]: At program point L29-1(line 29) the Hoare annotation is: false [2019-10-07 12:46:30,429 INFO L443 ceAbstractionStarter]: For program point L29-3(line 29) no Hoare annotation was computed. [2019-10-07 12:46:30,429 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2019-10-07 12:46:30,430 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-10-07 12:46:30,430 INFO L443 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-10-07 12:46:30,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 12:46:30 BoogieIcfgContainer [2019-10-07 12:46:30,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 12:46:30,436 INFO L168 Benchmark]: Toolchain (without parser) took 1289.88 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 135.4 MB in the end (delta: -35.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,437 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.86 ms. Allocated memory is still 135.3 MB. Free memory was 99.3 MB in the beginning and 89.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,440 INFO L168 Benchmark]: Boogie Preprocessor took 125.71 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 89.7 MB in the beginning and 176.4 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,441 INFO L168 Benchmark]: RCFGBuilder took 404.53 ms. Allocated memory is still 198.2 MB. Free memory was 176.4 MB in the beginning and 162.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,442 INFO L168 Benchmark]: TraceAbstraction took 483.23 ms. Allocated memory is still 198.2 MB. Free memory was 161.7 MB in the beginning and 135.4 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-10-07 12:46:30,446 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.86 ms. Allocated memory is still 135.3 MB. Free memory was 99.3 MB in the beginning and 89.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.71 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 89.7 MB in the beginning and 176.4 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.53 ms. Allocated memory is still 198.2 MB. Free memory was 176.4 MB in the beginning and 162.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 483.23 ms. Allocated memory is still 198.2 MB. Free memory was 161.7 MB in the beginning and 135.4 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 26 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...