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.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:04,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:04,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:04,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:04,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:04,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:04,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:04,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:04,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:04,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:04,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:04,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:04,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:04,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:04,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:04,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:04,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:04,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:04,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:04,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:04,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:04,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:04,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:04,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:04,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:08:04,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:04,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:04,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:04,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:04,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:04,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:04,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:04,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:04,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:04,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:04,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:04,128 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 [2019-10-14 23:08:04,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:04,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:04,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:04,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:04,168 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:04,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:04,169 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:04,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:04,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:04,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:04,170 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:04,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:04,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:04,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:04,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:04,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:04,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:04,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:04,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:04,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:04,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:04,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:04,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:04,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:04,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:04,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:04,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:04,526 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:04,526 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:04,527 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-14 23:08:04,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa90ae1a/1f689378c4294c408b1077f1e71bbcdf/FLAG646a4a6cb [2019-10-14 23:08:05,037 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:05,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alias_of_return.i [2019-10-14 23:08:05,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa90ae1a/1f689378c4294c408b1077f1e71bbcdf/FLAG646a4a6cb [2019-10-14 23:08:05,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa90ae1a/1f689378c4294c408b1077f1e71bbcdf [2019-10-14 23:08:05,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:05,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:05,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:05,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:05,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:05,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,499 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 14.10 11:08:05, skipping insertion in model container [2019-10-14 23:08:05,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:05,523 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:05,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:05,741 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:05,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:05,782 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:05,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05 WrapperNode [2019-10-14 23:08:05,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:05,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:05,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:05,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:05,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (1/1) ... [2019-10-14 23:08:05,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:05,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:05,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:05,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:05,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (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 [2019-10-14 23:08:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-14 23:08:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self [2019-10-14 23:08:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure return_self [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:06,204 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:06,204 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:08:06,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:06 BoogieIcfgContainer [2019-10-14 23:08:06,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:06,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:06,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:06,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:06,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:05" (1/3) ... [2019-10-14 23:08:06,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6b6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:06, skipping insertion in model container [2019-10-14 23:08:06,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:05" (2/3) ... [2019-10-14 23:08:06,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6b6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:06, skipping insertion in model container [2019-10-14 23:08:06,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:06" (3/3) ... [2019-10-14 23:08:06,213 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return.i [2019-10-14 23:08:06,226 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:06,233 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:06,253 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:06,283 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:06,284 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:06,284 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:06,284 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:06,284 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:06,284 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:06,285 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:06,285 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-14 23:08:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:08:06,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:06,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:06,314 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:06,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1496730974, now seen corresponding path program 1 times [2019-10-14 23:08:06,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:06,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391986149] [2019-10-14 23:08:06,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:06,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:06,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:06,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391986149] [2019-10-14 23:08:06,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:06,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:08:06,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48579735] [2019-10-14 23:08:06,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:06,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:06,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:06,619 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2019-10-14 23:08:06,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:06,740 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2019-10-14 23:08:06,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:08:06,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-14 23:08:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:06,751 INFO L225 Difference]: With dead ends: 27 [2019-10-14 23:08:06,751 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:08:06,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:08:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:08:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:08:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:08:06,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:08:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:06,786 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:08:06,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:08:06,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:08:06,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:08:06,855 INFO L446 ceAbstractionStarter]: At program point return_selfENTRY(lines 11 14) the Hoare annotation is: true [2019-10-14 23:08:06,855 INFO L443 ceAbstractionStarter]: For program point return_selfFINAL(lines 11 14) no Hoare annotation was computed. [2019-10-14 23:08:06,855 INFO L443 ceAbstractionStarter]: For program point return_selfEXIT(lines 11 14) no Hoare annotation was computed. [2019-10-14 23:08:06,856 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:06,856 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)|)) [2019-10-14 23:08:06,856 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:06,857 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-10-14 23:08:06,857 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 7 8) no Hoare annotation was computed. [2019-10-14 23:08:06,857 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 7 8) the Hoare annotation is: true [2019-10-14 23:08:06,857 INFO L443 ceAbstractionStarter]: For program point errFINAL(lines 7 8) no Hoare annotation was computed. [2019-10-14 23:08:06,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:06,858 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:08:06,858 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:08:06,858 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:06,858 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: (= |#valid| |old(#valid)|) [2019-10-14 23:08:06,858 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-10-14 23:08:06,859 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 30) no Hoare annotation was computed. [2019-10-14 23:08:06,859 INFO L439 ceAbstractionStarter]: At program point L29-1(line 29) the Hoare annotation is: false [2019-10-14 23:08:06,859 INFO L443 ceAbstractionStarter]: For program point L29-3(line 29) no Hoare annotation was computed. [2019-10-14 23:08:06,859 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2019-10-14 23:08:06,859 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-10-14 23:08:06,860 INFO L443 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-10-14 23:08:06,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:08:06 BoogieIcfgContainer [2019-10-14 23:08:06,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:08:06,868 INFO L168 Benchmark]: Toolchain (without parser) took 1382.23 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 130.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,869 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.33 ms. Allocated memory is still 136.3 MB. Free memory was 100.5 MB in the beginning and 90.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,871 INFO L168 Benchmark]: Boogie Preprocessor took 119.53 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 178.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,872 INFO L168 Benchmark]: RCFGBuilder took 302.19 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 166.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,873 INFO L168 Benchmark]: TraceAbstraction took 657.67 ms. Allocated memory is still 200.3 MB. Free memory was 166.1 MB in the beginning and 130.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:06,877 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.33 ms. Allocated memory is still 136.3 MB. Free memory was 100.5 MB in the beginning and 90.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.53 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 178.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 302.19 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 166.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 657.67 ms. Allocated memory is still 200.3 MB. Free memory was 166.1 MB in the beginning and 130.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 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: 11 SDtfs, 2 SDslu, 29 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 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, 546 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...