./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/ldv-memsafety/memsetNonZero2_true-valid-memsafety_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/ldv-memsafety/memsetNonZero2_true-valid-memsafety_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0ea593d74670c91cacf864f376c3b9b3ea0d491 ............................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:50:28,516 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:50:28,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:50:28,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:50:28,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:50:28,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:50:28,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:50:28,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:50:28,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:50:28,539 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:50:28,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:50:28,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:50:28,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:50:28,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:50:28,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:50:28,546 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:50:28,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:50:28,549 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:50:28,552 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:50:28,554 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:50:28,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:50:28,557 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:50:28,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:50:28,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:50:28,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:50:28,562 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:50:28,563 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:50:28,565 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:50:28,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:50:28,567 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:50:28,567 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:50:28,568 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:50:28,569 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:50:28,569 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:50:28,571 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:50:28,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:50:28,572 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:50:28,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:50:28,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:50:28,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:50:28,590 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:50:28,591 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:50:28,591 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:50:28,592 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:50:28,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:50:28,592 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:50:28,592 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:50:28,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:50:28,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:50:28,595 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:50:28,595 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:50:28,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:50:28,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:50:28,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:50:28,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:50:28,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:50:28,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:50:28,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:50:28,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:50:28,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:50:28,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0ea593d74670c91cacf864f376c3b9b3ea0d491 [2018-11-28 22:50:28,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:50:28,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:50:28,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:50:28,655 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:50:28,655 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:50:28,656 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-memsafety/memsetNonZero2_true-valid-memsafety_true-termination.c [2018-11-28 22:50:28,717 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98df04d33/43eb24b253844abd989965635ea7219f/FLAGa84f279b4 [2018-11-28 22:50:29,203 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:50:29,204 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-memsafety/memsetNonZero2_true-valid-memsafety_true-termination.c [2018-11-28 22:50:29,211 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98df04d33/43eb24b253844abd989965635ea7219f/FLAGa84f279b4 [2018-11-28 22:50:29,545 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98df04d33/43eb24b253844abd989965635ea7219f [2018-11-28 22:50:29,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:50:29,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:50:29,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:50:29,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:50:29,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:50:29,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1089083f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29, skipping insertion in model container [2018-11-28 22:50:29,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:50:29,594 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:50:29,819 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:50:29,832 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:50:29,854 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:50:29,872 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:50:29,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29 WrapperNode [2018-11-28 22:50:29,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:50:29,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:50:29,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:50:29,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:50:29,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (1/1) ... [2018-11-28 22:50:29,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:50:29,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:50:29,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:50:29,928 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:50:29,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (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 [2018-11-28 22:50:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:50:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:50:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:50:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-28 22:50:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2018-11-28 22:50:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:50:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:50:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-28 22:50:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:50:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:50:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:50:30,184 WARN L615 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-11-28 22:50:30,362 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:50:30,363 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 22:50:30,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:50:30 BoogieIcfgContainer [2018-11-28 22:50:30,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:50:30,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:50:30,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:50:30,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:50:30,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:50:29" (1/3) ... [2018-11-28 22:50:30,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc70323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:50:30, skipping insertion in model container [2018-11-28 22:50:30,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:50:29" (2/3) ... [2018-11-28 22:50:30,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc70323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:50:30, skipping insertion in model container [2018-11-28 22:50:30,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:50:30" (3/3) ... [2018-11-28 22:50:30,385 INFO L112 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_true-valid-memsafety_true-termination.c [2018-11-28 22:50:30,395 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:50:30,402 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 22:50:30,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 22:50:30,446 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:50:30,447 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:50:30,447 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:50:30,448 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:50:30,448 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:50:30,448 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:50:30,448 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:50:30,448 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:50:30,448 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:50:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-28 22:50:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 22:50:30,486 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:50:30,487 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:50:30,492 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:50:30,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:50:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2018-11-28 22:50:30,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:50:30,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:50:30,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:30,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:30,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:30,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:50:30,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:50:30,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:50:30,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:50:30,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:50:30,718 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-28 22:50:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:50:30,780 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 22:50:30,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:50:30,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 22:50:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:50:30,790 INFO L225 Difference]: With dead ends: 19 [2018-11-28 22:50:30,791 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 22:50:30,792 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:50:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 22:50:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 22:50:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 22:50:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 22:50:30,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-11-28 22:50:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:50:30,825 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 22:50:30,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:50:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 22:50:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 22:50:30,827 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:50:30,827 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:50:30,827 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:50:30,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:50:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2018-11-28 22:50:30,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:50:30,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:50:30,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:30,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:30,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:30,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:50:30,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:50:30,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 22:50:30,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 22:50:30,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:50:30,930 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-11-28 22:50:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:50:30,978 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-28 22:50:30,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 22:50:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 22:50:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:50:30,980 INFO L225 Difference]: With dead ends: 15 [2018-11-28 22:50:30,980 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 22:50:30,981 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 22:50:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 22:50:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 22:50:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 22:50:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-28 22:50:30,984 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2018-11-28 22:50:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:50:30,985 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-28 22:50:30,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 22:50:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-28 22:50:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:50:30,985 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:50:30,986 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:50:30,986 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:50:30,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:50:30,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2018-11-28 22:50:30,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:50:30,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:50:30,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:30,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:30,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:31,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:50:31,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:50:31,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:50:31,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:50:31,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:50:31,097 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-11-28 22:50:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:50:31,143 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 22:50:31,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:50:31,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 22:50:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:50:31,146 INFO L225 Difference]: With dead ends: 18 [2018-11-28 22:50:31,146 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 22:50:31,146 INFO L631 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 [2018-11-28 22:50:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 22:50:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 22:50:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 22:50:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 22:50:31,151 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-11-28 22:50:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:50:31,151 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 22:50:31,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:50:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 22:50:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 22:50:31,152 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:50:31,152 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:50:31,153 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:50:31,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:50:31,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2018-11-28 22:50:31,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:50:31,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:50:31,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:31,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:31,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:31,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:50:31,290 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:50:31,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:31,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:50:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:31,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:50:31,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-28 22:50:31,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 22:50:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 22:50:31,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:50:31,683 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-28 22:50:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:50:31,760 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 22:50:31,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:50:31,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-28 22:50:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:50:31,762 INFO L225 Difference]: With dead ends: 19 [2018-11-28 22:50:31,762 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 22:50:31,763 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:50:31,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 22:50:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 22:50:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 22:50:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-28 22:50:31,766 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-11-28 22:50:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:50:31,767 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-28 22:50:31,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 22:50:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-28 22:50:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:50:31,768 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:50:31,768 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:50:31,768 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 22:50:31,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:50:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2018-11-28 22:50:31,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:50:31,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:50:31,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:31,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:50:31,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:50:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:50:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:50:31,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:50:31,895 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:50:31,905 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 22:50:31,938 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 22:50:31,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 22:50:31,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:50:32,141 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:50:32,147 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-28 22:50:32,148 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:50:32,158 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 22:50:32,158 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-28 22:50:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 22:50:32,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 22:50:32,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-11-28 22:50:32,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 22:50:32,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 22:50:32,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2018-11-28 22:50:32,786 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-11-28 22:50:33,225 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 22:50:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:50:33,475 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 22:50:33,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 22:50:33,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-11-28 22:50:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:50:33,477 INFO L225 Difference]: With dead ends: 19 [2018-11-28 22:50:33,477 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 22:50:33,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=147, Unknown=1, NotChecked=0, Total=210 [2018-11-28 22:50:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 22:50:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 22:50:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 22:50:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 22:50:33,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-28 22:50:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:50:33,479 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 22:50:33,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 22:50:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 22:50:33,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 22:50:33,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:50:33 BoogieIcfgContainer [2018-11-28 22:50:33,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:50:33,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:50:33,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:50:33,485 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:50:33,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:50:30" (3/4) ... [2018-11-28 22:50:33,489 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 22:50:33,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 22:50:33,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2018-11-28 22:50:33,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 22:50:33,502 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 22:50:33,502 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 22:50:33,503 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 22:50:33,503 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 22:50:33,538 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:50:33,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:50:33,540 INFO L168 Benchmark]: Toolchain (without parser) took 3989.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.4 MB in the beginning and 998.0 MB in the end (delta: -46.6 MB). Peak memory consumption was 77.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:50:33,541 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:50:33,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.19 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:50:33,542 INFO L168 Benchmark]: Boogie Preprocessor took 52.84 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:50:33,543 INFO L168 Benchmark]: RCFGBuilder took 436.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-11-28 22:50:33,544 INFO L168 Benchmark]: TraceAbstraction took 3120.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.0 MB in the end (delta: 100.5 MB). Peak memory consumption was 100.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:50:33,545 INFO L168 Benchmark]: Witness Printer took 53.61 ms. Allocated memory is still 1.2 GB. Free memory is still 998.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:50:33,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.19 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.84 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 436.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3120.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.0 MB in the end (delta: 100.5 MB). Peak memory consumption was 100.5 MB. Max. memory is 11.5 GB. * Witness Printer took 53.61 ms. Allocated memory is still 1.2 GB. Free memory is still 998.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. SAFE Result, 3.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 15 SDslu, 87 SDs, 0 SdLazy, 87 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 2976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...