/usr/bin/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/ldv-regression/alias_of_return.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:09:57,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:09:57,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:09:57,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:09:57,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:09:57,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:09:57,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:09:57,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:09:57,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:09:57,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:09:57,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:09:57,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:09:57,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:09:57,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:09:57,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:09:57,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:09:57,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:09:57,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:09:57,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:09:57,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:09:57,470 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 [2019-11-06 21:09:57,492 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:09:57,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:09:57,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:09:57,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:09:57,494 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:09:57,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:09:57,494 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:09:57,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:09:57,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:09:57,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:09:57,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:09:57,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:09:57,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:09:57,496 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:09:57,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:09:57,496 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:09:57,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:09:57,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:09:57,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:09:57,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:09:57,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:09:57,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:09:57,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:09:57,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:09:57,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:09:57,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:09:57,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:09:57,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:09:57,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:09:57,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:09:57,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:09:57,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:09:57,778 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:09:57,778 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:09:57,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return.c_1.i [2019-11-06 21:09:57,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6908aa17f/8941148f057c4b9790d8bf0c01a43e94/FLAG960d2c28f [2019-11-06 21:09:58,284 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:09:58,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alias_of_return.c_1.i [2019-11-06 21:09:58,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6908aa17f/8941148f057c4b9790d8bf0c01a43e94/FLAG960d2c28f [2019-11-06 21:09:58,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6908aa17f/8941148f057c4b9790d8bf0c01a43e94 [2019-11-06 21:09:58,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:09:58,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:09:58,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:09:58,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:09:58,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:09:58,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:58,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f254be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58, skipping insertion in model container [2019-11-06 21:09:58,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:58,699 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:09:58,714 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:09:58,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:09:58,873 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:09:58,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:09:58,900 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:09:58,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58 WrapperNode [2019-11-06 21:09:58,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:09:58,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:09:58,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:09:58,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:09:58,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:58,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:58,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:58,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:59,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:59,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:59,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (1/1) ... [2019-11-06 21:09:59,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:09:59,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:09:59,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:09:59,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:09:59,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (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 [2019-11-06 21:09:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:09:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:09:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-11-06 21:09:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self [2019-11-06 21:09:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:09:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:09:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-11-06 21:09:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure return_self [2019-11-06 21:09:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:09:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:09:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:09:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:09:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:09:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:09:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:09:59,248 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:09:59,248 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:09:59,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:59 BoogieIcfgContainer [2019-11-06 21:09:59,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:09:59,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:09:59,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:09:59,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:09:59,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:09:58" (1/3) ... [2019-11-06 21:09:59,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5353ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:59, skipping insertion in model container [2019-11-06 21:09:59,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:58" (2/3) ... [2019-11-06 21:09:59,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5353ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:59, skipping insertion in model container [2019-11-06 21:09:59,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:59" (3/3) ... [2019-11-06 21:09:59,279 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return.c_1.i [2019-11-06 21:09:59,304 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:09:59,323 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:09:59,334 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:09:59,367 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:09:59,367 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:09:59,367 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:09:59,367 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:09:59,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:09:59,368 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:09:59,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:09:59,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:09:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-06 21:09:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-06 21:09:59,388 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:09:59,388 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:09:59,390 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:09:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:09:59,397 INFO L82 PathProgramCache]: Analyzing trace with hash 489140804, now seen corresponding path program 1 times [2019-11-06 21:09:59,404 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:09:59,405 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355538146] [2019-11-06 21:09:59,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:09:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:09:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:09:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:09:59,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355538146] [2019-11-06 21:09:59,607 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:09:59,607 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:09:59,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758595079] [2019-11-06 21:09:59,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:09:59,613 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:09:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:09:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:09:59,631 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-11-06 21:09:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:09:59,694 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-11-06 21:09:59,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:09:59,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-06 21:09:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:09:59,705 INFO L225 Difference]: With dead ends: 22 [2019-11-06 21:09:59,705 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:09:59,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:09:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:09:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:09:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:09:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:09:59,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-06 21:09:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:09:59,741 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:09:59,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:09:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:09:59,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:09:59,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:09:59,797 INFO L443 ceAbstractionStarter]: For program point return_selfENTRY(lines 19 22) no Hoare annotation was computed. [2019-11-06 21:09:59,797 INFO L443 ceAbstractionStarter]: For program point return_selfFINAL(lines 19 22) no Hoare annotation was computed. [2019-11-06 21:09:59,797 INFO L443 ceAbstractionStarter]: For program point return_selfEXIT(lines 19 22) no Hoare annotation was computed. [2019-11-06 21:09:59,797 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:09:59,798 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-11-06 21:09:59,798 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:09:59,798 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2019-11-06 21:09:59,798 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 15 16) no Hoare annotation was computed. [2019-11-06 21:09:59,799 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 15 16) the Hoare annotation is: true [2019-11-06 21:09:59,799 INFO L443 ceAbstractionStarter]: For program point errFINAL(lines 15 16) no Hoare annotation was computed. [2019-11-06 21:09:59,799 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:09:59,799 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:09:59,799 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:09:59,800 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:09:59,802 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 24 38) the Hoare annotation is: (= |#valid| |old(#valid)|) [2019-11-06 21:09:59,803 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2019-11-06 21:09:59,803 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2019-11-06 21:09:59,803 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-06 21:09:59,803 INFO L439 ceAbstractionStarter]: At program point L37-1(line 37) the Hoare annotation is: false [2019-11-06 21:09:59,803 INFO L443 ceAbstractionStarter]: For program point L37-3(line 37) no Hoare annotation was computed. [2019-11-06 21:09:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:09:59 BoogieIcfgContainer [2019-11-06 21:09:59,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:09:59,811 INFO L168 Benchmark]: Toolchain (without parser) took 1125.80 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 140.9 MB in the end (delta: -37.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:09:59,811 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 21:09:59,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.28 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:09:59,814 INFO L168 Benchmark]: Boogie Preprocessor took 104.77 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:09:59,815 INFO L168 Benchmark]: RCFGBuilder took 251.49 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:09:59,816 INFO L168 Benchmark]: TraceAbstraction took 548.51 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 140.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:09:59,820 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.28 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.77 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 251.49 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 548.51 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 140.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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, 20 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 12 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 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...