/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:54:03,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:54:03,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:54:03,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:54:03,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:54:03,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:54:03,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:54:03,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:54:03,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:54:03,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:54:03,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:54:03,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:54:03,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:54:03,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:54:03,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:54:03,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:54:03,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:54:03,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:54:03,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:54:03,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:54:03,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:54:03,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:54:03,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:54:03,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:54:03,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 03:54:03,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 03:54:03,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 03:54:03,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 03:54:03,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 03:54:03,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 03:54:03,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:54:03,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:54:03,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:54:03,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:54:03,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:54:03,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:54:03,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:54:03,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:54:03,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:54:03,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:54:03,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:54:03,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:54:03,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:54:03,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:54:03,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:54:03,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:54:03,317 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:54:03,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:54:03,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:54:03,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:54:03,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:54:03,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:54:03,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:54:03,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:54:03,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:54:03,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:54:03,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:54:03,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:54:03,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:54:03,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:54:03,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:54:03,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:54:03,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:54:03,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:54:03,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:54:03,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:54:03,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:54:03,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:54:03,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:54:03,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:54:03,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:54:03,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:54:03,798 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:54:03,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-22 03:54:03,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf1b0e7/2777a6470c04480eb3ad010012029a60/FLAGf315ce3cd [2020-12-22 03:54:04,690 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:54:04,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-12-22 03:54:04,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf1b0e7/2777a6470c04480eb3ad010012029a60/FLAGf315ce3cd [2020-12-22 03:54:04,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf1b0e7/2777a6470c04480eb3ad010012029a60 [2020-12-22 03:54:04,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:54:04,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:54:04,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:54:04,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:54:04,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:54:04,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:54:04" (1/1) ... [2020-12-22 03:54:04,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3548f0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:04, skipping insertion in model container [2020-12-22 03:54:04,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:54:04" (1/1) ... [2020-12-22 03:54:04,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:54:05,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:54:05,434 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-22 03:54:05,438 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-22 03:54:05,441 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-22 03:54:05,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:54:05,460 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:54:05,526 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2020-12-22 03:54:05,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2020-12-22 03:54:05,536 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2020-12-22 03:54:05,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:54:05,621 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:54:05,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05 WrapperNode [2020-12-22 03:54:05,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:54:05,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:54:05,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:54:05,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:54:05,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:54:05,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:54:05,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:54:05,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:54:05,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (1/1) ... [2020-12-22 03:54:05,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:54:05,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:54:05,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:54:05,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:54:05,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (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 [2020-12-22 03:54:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:54:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:54:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 03:54:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 03:54:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:54:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 03:54:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:54:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:54:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:54:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:54:06,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:54:06,459 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 03:54:06,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:54:06 BoogieIcfgContainer [2020-12-22 03:54:06,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:54:06,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:54:06,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:54:06,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:54:06,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:54:04" (1/3) ... [2020-12-22 03:54:06,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bc905c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:54:06, skipping insertion in model container [2020-12-22 03:54:06,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:54:05" (2/3) ... [2020-12-22 03:54:06,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bc905c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:54:06, skipping insertion in model container [2020-12-22 03:54:06,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:54:06" (3/3) ... [2020-12-22 03:54:06,475 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-12-22 03:54:06,483 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:54:06,494 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 03:54:06,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 03:54:06,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:54:06,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:54:06,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:54:06,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:54:06,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:54:06,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:54:06,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:54:06,566 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:54:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-22 03:54:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 03:54:06,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:06,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 03:54:06,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:06,600 INFO L82 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2020-12-22 03:54:06,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:06,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904789989] [2020-12-22 03:54:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:06,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904789989] [2020-12-22 03:54:06,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:54:06,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:54:06,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503979157] [2020-12-22 03:54:06,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:54:06,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:54:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:54:06,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:54:06,891 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-22 03:54:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:54:06,917 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2020-12-22 03:54:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:54:06,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 03:54:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:54:06,937 INFO L225 Difference]: With dead ends: 53 [2020-12-22 03:54:06,937 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 03:54:06,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:54:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 03:54:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 03:54:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 03:54:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-22 03:54:06,982 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2020-12-22 03:54:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:54:06,983 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-22 03:54:06,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:54:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-22 03:54:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 03:54:06,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:06,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:54:06,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:54:06,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:06,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2020-12-22 03:54:06,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:06,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502094871] [2020-12-22 03:54:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:07,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502094871] [2020-12-22 03:54:07,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:54:07,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:54:07,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871172388] [2020-12-22 03:54:07,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:54:07,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:54:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:54:07,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:54:07,123 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-12-22 03:54:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:54:07,226 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-12-22 03:54:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:54:07,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 03:54:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:54:07,227 INFO L225 Difference]: With dead ends: 31 [2020-12-22 03:54:07,228 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 03:54:07,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:54:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 03:54:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-12-22 03:54:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 03:54:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-22 03:54:07,235 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2020-12-22 03:54:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:54:07,235 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-22 03:54:07,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:54:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-22 03:54:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:54:07,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:07,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:54:07,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:54:07,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2020-12-22 03:54:07,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:07,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351685137] [2020-12-22 03:54:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:07,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351685137] [2020-12-22 03:54:07,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:54:07,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:54:07,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033076908] [2020-12-22 03:54:07,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:54:07,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:54:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:54:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:54:07,341 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-12-22 03:54:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:54:07,542 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-22 03:54:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 03:54:07,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 03:54:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:54:07,544 INFO L225 Difference]: With dead ends: 47 [2020-12-22 03:54:07,544 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 03:54:07,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 03:54:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 03:54:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2020-12-22 03:54:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:54:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 03:54:07,553 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2020-12-22 03:54:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:54:07,553 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 03:54:07,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:54:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 03:54:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:54:07,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:07,555 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:54:07,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:54:07,555 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2020-12-22 03:54:07,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:07,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783522093] [2020-12-22 03:54:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783522093] [2020-12-22 03:54:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960294239] [2020-12-22 03:54:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:54:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:07,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 03:54:07,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:54:08,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 03:54:08,037 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,056 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 03:54:08,057 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,068 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,068 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:21 [2020-12-22 03:54:08,208 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,209 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-22 03:54:08,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 03:54:08,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,306 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 03:54:08,347 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,367 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2020-12-22 03:54:08,371 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-12-22 03:54:08,421 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,447 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,467 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,468 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:111, output treesize:24 [2020-12-22 03:54:08,610 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,611 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-12-22 03:54:08,614 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:54:08,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 03:54:08,619 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,688 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|, |v_#memory_int_32|, |v_#memory_int_33|, |v_#memory_$Pointer$.base_23|], 4=[|v_#memory_int_35|]} [2020-12-22 03:54:08,694 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 03:54:08,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,755 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 03:54:08,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,798 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 03:54:08,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,836 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 03:54:08,912 INFO L348 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-12-22 03:54:08,913 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-12-22 03:54:08,917 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:08,969 INFO L625 ElimStorePlain]: treesize reduction 16, result has 82.2 percent of original size [2020-12-22 03:54:08,993 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 03:54:08,994 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:246, output treesize:40 [2020-12-22 03:54:09,210 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-12-22 03:54:09,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:54:09,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:54:09,225 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:54:09,225 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-12-22 03:54:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:09,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:54:09,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 03:54:09,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74369132] [2020-12-22 03:54:09,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 03:54:09,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:54:09,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 03:54:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-22 03:54:09,232 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 10 states. [2020-12-22 03:54:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:54:11,921 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-12-22 03:54:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 03:54:11,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-22 03:54:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:54:11,923 INFO L225 Difference]: With dead ends: 60 [2020-12-22 03:54:11,923 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 03:54:11,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-22 03:54:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 03:54:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 19. [2020-12-22 03:54:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 03:54:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-12-22 03:54:11,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2020-12-22 03:54:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:54:11,944 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-12-22 03:54:11,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 03:54:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-12-22 03:54:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:54:11,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:11,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:54:12,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:54:12,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:12,151 INFO L82 PathProgramCache]: Analyzing trace with hash -839217458, now seen corresponding path program 1 times [2020-12-22 03:54:12,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:12,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984569439] [2020-12-22 03:54:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:54:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:54:12,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984569439] [2020-12-22 03:54:12,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:54:12,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:54:12,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609694206] [2020-12-22 03:54:12,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:54:12,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:54:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:54:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:54:12,270 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2020-12-22 03:54:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:54:12,393 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-12-22 03:54:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:54:12,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 03:54:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:54:12,394 INFO L225 Difference]: With dead ends: 35 [2020-12-22 03:54:12,395 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 03:54:12,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:54:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 03:54:12,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-12-22 03:54:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 03:54:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-22 03:54:12,400 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-12-22 03:54:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:54:12,401 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-22 03:54:12,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:54:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-22 03:54:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:54:12,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:54:12,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:54:12,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:54:12,402 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:54:12,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:54:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash -839157876, now seen corresponding path program 1 times [2020-12-22 03:54:12,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:54:12,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163921543] [2020-12-22 03:54:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:54:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:54:12,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:54:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:54:12,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:54:12,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:54:12,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:54:12,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:54:12,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:54:12 BoogieIcfgContainer [2020-12-22 03:54:12,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:54:12,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:54:12,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:54:12,520 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:54:12,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:54:06" (3/4) ... [2020-12-22 03:54:12,523 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:54:12,565 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/forester-heap/dll-rb-cnstr_1-2.i-witness.graphml [2020-12-22 03:54:12,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:54:12,567 INFO L168 Benchmark]: Toolchain (without parser) took 7619.14 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 134.7 MB in the beginning and 65.3 MB in the end (delta: 69.4 MB). Peak memory consumption was 102.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,568 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:54:12,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.78 ms. Allocated memory is still 161.5 MB. Free memory was 134.6 MB in the beginning and 112.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.87 ms. Allocated memory is still 161.5 MB. Free memory was 112.1 MB in the beginning and 110.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,570 INFO L168 Benchmark]: Boogie Preprocessor took 105.61 ms. Allocated memory is still 161.5 MB. Free memory was 110.0 MB in the beginning and 142.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,570 INFO L168 Benchmark]: RCFGBuilder took 662.54 ms. Allocated memory is still 161.5 MB. Free memory was 142.1 MB in the beginning and 118.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,571 INFO L168 Benchmark]: TraceAbstraction took 6055.36 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 118.0 MB in the beginning and 67.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 83.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,572 INFO L168 Benchmark]: Witness Printer took 46.03 ms. Allocated memory is still 194.0 MB. Free memory was 67.4 MB in the beginning and 65.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:54:12,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 672.78 ms. Allocated memory is still 161.5 MB. Free memory was 134.6 MB in the beginning and 112.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.87 ms. Allocated memory is still 161.5 MB. Free memory was 112.1 MB in the beginning and 110.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.61 ms. Allocated memory is still 161.5 MB. Free memory was 110.0 MB in the beginning and 142.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 662.54 ms. Allocated memory is still 161.5 MB. Free memory was 142.1 MB in the beginning and 118.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6055.36 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 118.0 MB in the beginning and 67.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 83.6 MB. Max. memory is 8.0 GB. * Witness Printer took 46.03 ms. Allocated memory is still 194.0 MB. Free memory was 67.4 MB in the beginning and 65.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 148 SDslu, 195 SDs, 0 SdLazy, 213 SolverSat, 41 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 6 QuantifiedInterpolants, 6780 SizeOfPredicates, 12 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...