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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/alias_of_return.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:07,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:07,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:07,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:01:07,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:01:07,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:01:07,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:01:07,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:01:07,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:01:07,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:01:07,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:01:07,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:01:07,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:01:07,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:01:07,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:01:07,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:01:07,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:01:07,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:01:07,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:01:07,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:01:07,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:01:07,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:01:07,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:01:07,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:01:07,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:01:07,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:07,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:07,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:07,710 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 [2019-10-15 01:01:07,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:07,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:07,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:07,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:07,734 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:07,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:07,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:07,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:07,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:07,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:07,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:07,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:07,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:07,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:07,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:07,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:07,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:07,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:07,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:07,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:07,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:07,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:07,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:07,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:07,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:07,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:07,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:07,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:07,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:01:08,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:08,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:08,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:08,025 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:08,026 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:08,026 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-15 01:01:08,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131499773/3d098633d9c544b6b83feaa5135da182/FLAG2a5af1024 [2019-10-15 01:01:08,542 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:08,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-15 01:01:08,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131499773/3d098633d9c544b6b83feaa5135da182/FLAG2a5af1024 [2019-10-15 01:01:08,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131499773/3d098633d9c544b6b83feaa5135da182 [2019-10-15 01:01:08,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:08,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:08,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:08,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:08,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:08,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:08" (1/1) ... [2019-10-15 01:01:08,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a76cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:08, skipping insertion in model container [2019-10-15 01:01:08,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:08" (1/1) ... [2019-10-15 01:01:08,936 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:08,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:09,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:09,133 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:09,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:09,160 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:09,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09 WrapperNode [2019-10-15 01:01:09,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:09,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:09,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:09,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:09,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (1/1) ... [2019-10-15 01:01:09,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:09,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:09,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:09,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:09,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (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 [2019-10-15 01:01:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-15 01:01:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self [2019-10-15 01:01:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-15 01:01:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure return_self [2019-10-15 01:01:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:01:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:01:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:09,513 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:09,513 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:01:09,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:09 BoogieIcfgContainer [2019-10-15 01:01:09,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:09,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:09,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:09,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:09,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:08" (1/3) ... [2019-10-15 01:01:09,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ea84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:09, skipping insertion in model container [2019-10-15 01:01:09,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:09" (2/3) ... [2019-10-15 01:01:09,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7ea84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:09, skipping insertion in model container [2019-10-15 01:01:09,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:09" (3/3) ... [2019-10-15 01:01:09,522 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return.i [2019-10-15 01:01:09,533 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:09,539 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:01:09,548 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:01:09,570 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:09,570 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:09,571 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:09,571 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:09,571 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:09,571 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:09,571 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:09,571 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-15 01:01:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:01:09,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:09,596 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:09,598 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:09,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1496730974, now seen corresponding path program 1 times [2019-10-15 01:01:09,614 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:09,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421702155] [2019-10-15 01:01:09,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:09,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:09,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:01:09,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421702155] [2019-10-15 01:01:09,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:09,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:01:09,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611647776] [2019-10-15 01:01:09,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:01:09,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:01:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:01:09,848 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-10-15 01:01:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:09,968 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2019-10-15 01:01:09,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:01:09,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-15 01:01:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:09,991 INFO L225 Difference]: With dead ends: 27 [2019-10-15 01:01:09,991 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:01:09,995 INFO L600 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 [2019-10-15 01:01:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:01:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:01:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:01:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:01:10,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-15 01:01:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:10,024 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:01:10,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:01:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:01:10,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:01:10,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:01:10,059 INFO L446 ceAbstractionStarter]: At program point return_selfENTRY(lines 11 14) the Hoare annotation is: true [2019-10-15 01:01:10,059 INFO L443 ceAbstractionStarter]: For program point return_selfFINAL(lines 11 14) no Hoare annotation was computed. [2019-10-15 01:01:10,060 INFO L443 ceAbstractionStarter]: For program point return_selfEXIT(lines 11 14) no Hoare annotation was computed. [2019-10-15 01:01:10,060 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:10,060 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:10,060 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:10,061 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-10-15 01:01:10,061 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 7 8) no Hoare annotation was computed. [2019-10-15 01:01:10,061 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 7 8) the Hoare annotation is: true [2019-10-15 01:01:10,061 INFO L443 ceAbstractionStarter]: For program point errFINAL(lines 7 8) no Hoare annotation was computed. [2019-10-15 01:01:10,062 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:10,068 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:01:10,069 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:10,069 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:10,069 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: true [2019-10-15 01:01:10,069 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-10-15 01:01:10,070 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 30) no Hoare annotation was computed. [2019-10-15 01:01:10,070 INFO L439 ceAbstractionStarter]: At program point L29-1(line 29) the Hoare annotation is: false [2019-10-15 01:01:10,070 INFO L443 ceAbstractionStarter]: For program point L29-3(line 29) no Hoare annotation was computed. [2019-10-15 01:01:10,070 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2019-10-15 01:01:10,070 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-10-15 01:01:10,071 INFO L443 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-10-15 01:01:10,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:01:10 BoogieIcfgContainer [2019-10-15 01:01:10,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:01:10,086 INFO L168 Benchmark]: Toolchain (without parser) took 1162.46 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 143.3 MB in the end (delta: -39.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,087 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.69 ms. Allocated memory is still 139.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,092 INFO L168 Benchmark]: Boogie Preprocessor took 122.21 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.2 MB in the beginning and 183.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,093 INFO L168 Benchmark]: RCFGBuilder took 230.92 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 171.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,095 INFO L168 Benchmark]: TraceAbstraction took 565.04 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 143.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:10,105 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 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.69 ms. Allocated memory is still 139.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.21 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.2 MB in the beginning and 183.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.92 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 171.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 565.04 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 143.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 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, 22 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 34 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=22occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 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...