/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:09:54,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:09:54,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:09:54,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:09:54,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:09:54,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:09:54,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:09:55,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:09:55,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:09:55,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:09:55,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:09:55,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:09:55,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:09:55,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:09:55,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:09:55,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:09:55,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:09:55,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:09:55,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:09:55,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:09:55,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:09:55,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:09:55,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:09:55,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:09:55,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:09:55,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:09:55,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:09:55,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:09:55,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:09:55,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:09:55,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:09:55,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:09:55,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:09:55,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:09:55,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:09:55,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:09:55,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:09:55,065 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:09:55,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:09:55,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:09:55,067 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:09:55,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:09:55,067 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:09:55,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:09:55,067 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:09:55,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:09:55,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:09:55,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:09:55,068 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:09:55,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:09:55,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:09:55,069 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:09:55,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:09:55,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:09:55,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:09:55,071 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:09:55,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:09:55,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:09:55,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:09:55,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:09:55,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:09:55,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:09:55,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:09:55,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:09:55,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:09:55,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:09:55,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:09:55,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:09:55,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:09:55,074 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:09:55,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:09:55,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:09:55,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:09:55,365 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:09:55,365 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:09:55,366 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2019-11-24 04:09:55,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eade3d2eb/5ac67528d5da46de81d527963938db81/FLAG699a25556 [2019-11-24 04:09:56,029 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:09:56,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2019-11-24 04:09:56,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eade3d2eb/5ac67528d5da46de81d527963938db81/FLAG699a25556 [2019-11-24 04:09:56,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eade3d2eb/5ac67528d5da46de81d527963938db81 [2019-11-24 04:09:56,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:09:56,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:09:56,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:09:56,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:09:56,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:09:56,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:56,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b58c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56, skipping insertion in model container [2019-11-24 04:09:56,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:56,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:09:56,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:09:56,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:09:56,859 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:09:56,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:09:56,965 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:09:56,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56 WrapperNode [2019-11-24 04:09:56,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:09:56,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:09:56,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:09:56,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:09:56,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:09:57,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:09:57,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:09:57,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:09:57,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (1/1) ... [2019-11-24 04:09:57,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:09:57,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:09:57,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:09:57,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:09:57,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (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 [2019-11-24 04:09:57,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:09:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:09:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:09:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:09:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:09:57,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:09:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:09:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:09:57,760 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:09:57,761 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-24 04:09:57,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:09:57 BoogieIcfgContainer [2019-11-24 04:09:57,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:09:57,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:09:57,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:09:57,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:09:57,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:09:56" (1/3) ... [2019-11-24 04:09:57,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb10bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:09:57, skipping insertion in model container [2019-11-24 04:09:57,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:09:56" (2/3) ... [2019-11-24 04:09:57,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb10bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:09:57, skipping insertion in model container [2019-11-24 04:09:57,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:09:57" (3/3) ... [2019-11-24 04:09:57,771 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2019-11-24 04:09:57,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:09:57,789 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:09:57,801 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:09:57,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:09:57,824 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:09:57,824 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:09:57,824 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:09:57,824 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:09:57,824 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:09:57,825 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:09:57,825 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:09:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-24 04:09:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:09:57,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:09:57,845 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:09:57,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:09:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:09:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash 73302926, now seen corresponding path program 1 times [2019-11-24 04:09:57,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:09:57,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143907371] [2019-11-24 04:09:57,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:09:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:09:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:09:58,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143907371] [2019-11-24 04:09:58,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:09:58,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:09:58,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582361984] [2019-11-24 04:09:58,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:09:58,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:09:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:09:58,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:09:58,062 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-24 04:09:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:09:58,114 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2019-11-24 04:09:58,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:09:58,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 04:09:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:09:58,124 INFO L225 Difference]: With dead ends: 20 [2019-11-24 04:09:58,124 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:09:58,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:09:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:09:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:09:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:09:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:09:58,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-24 04:09:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:09:58,157 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:09:58,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:09:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:09:58,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:09:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:09:58,229 INFO L440 ceAbstractionStarter]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-11-24 04:09:58,229 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:09:58,230 INFO L440 ceAbstractionStarter]: At program point L631(lines 613 632) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-11-24 04:09:58,230 INFO L440 ceAbstractionStarter]: At program point L607-2(lines 607 610) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-11-24 04:09:58,230 INFO L444 ceAbstractionStarter]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-11-24 04:09:58,230 INFO L440 ceAbstractionStarter]: At program point L600-2(lines 600 603) the Hoare annotation is: false [2019-11-24 04:09:58,231 INFO L440 ceAbstractionStarter]: At program point L625(lines 613 632) the Hoare annotation is: false [2019-11-24 04:09:58,231 INFO L440 ceAbstractionStarter]: At program point L576-2(lines 576 589) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-11-24 04:09:58,231 INFO L440 ceAbstractionStarter]: At program point L593-2(lines 593 597) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-11-24 04:09:58,231 INFO L440 ceAbstractionStarter]: At program point L618-2(lines 618 621) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-11-24 04:09:58,232 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2019-11-24 04:09:58,232 INFO L444 ceAbstractionStarter]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-11-24 04:09:58,232 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:09:58,232 INFO L440 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-11-24 04:09:58,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:09:58 BoogieIcfgContainer [2019-11-24 04:09:58,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:09:58,255 INFO L168 Benchmark]: Toolchain (without parser) took 1955.59 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 99.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,256 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-24 04:09:58,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.40 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 167.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 202.4 MB. Free memory was 167.3 MB in the beginning and 165.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,259 INFO L168 Benchmark]: Boogie Preprocessor took 37.37 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 163.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,260 INFO L168 Benchmark]: RCFGBuilder took 697.19 ms. Allocated memory is still 202.4 MB. Free memory was 163.6 MB in the beginning and 127.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,261 INFO L168 Benchmark]: TraceAbstraction took 489.04 ms. Allocated memory is still 202.4 MB. Free memory was 127.3 MB in the beginning and 99.2 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:09:58,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.40 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 167.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 202.4 MB. Free memory was 167.3 MB in the beginning and 165.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.37 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 163.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 697.19 ms. Allocated memory is still 202.4 MB. Free memory was 163.6 MB in the beginning and 127.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 489.04 ms. Allocated memory is still 202.4 MB. Free memory was 127.3 MB in the beginning and 99.2 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: 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 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 41 HoareAnnotationTreeSize, 9 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 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...