./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f 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/ArraysOfVariableLength2_false-valid-deref-write.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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 19:05:30,728 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 19:05:30,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 19:05:30,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 19:05:30,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 19:05:30,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 19:05:30,752 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 19:05:30,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 19:05:30,757 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 19:05:30,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 19:05:30,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 19:05:30,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 19:05:30,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 19:05:30,766 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 19:05:30,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 19:05:30,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 19:05:30,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 19:05:30,775 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 19:05:30,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 19:05:30,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 19:05:30,791 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 19:05:30,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 19:05:30,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 19:05:30,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 19:05:30,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 19:05:30,803 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 19:05:30,804 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 19:05:30,807 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 19:05:30,810 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 19:05:30,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 19:05:30,813 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 19:05:30,813 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 19:05:30,814 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 19:05:30,814 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 19:05:30,815 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 19:05:30,818 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 19:05:30,818 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 19:05:30,842 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 19:05:30,842 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 19:05:30,843 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 19:05:30,846 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 19:05:30,846 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 19:05:30,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 19:05:30,847 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 19:05:30,848 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 19:05:30,848 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 19:05:30,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 19:05:30,848 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 19:05:30,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 19:05:30,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 19:05:30,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 19:05:30,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 19:05:30,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:05:30,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 19:05:30,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 19:05:30,849 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 19:05:30,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 19:05:30,851 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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-01-14 19:05:30,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 19:05:30,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 19:05:30,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 19:05:30,938 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 19:05:30,939 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 19:05:30,940 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2019-01-14 19:05:30,999 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d964f6f/d2e8a9c1e304458f83ffdfecfef76ac7/FLAG21f775f4a [2019-01-14 19:05:31,400 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 19:05:31,401 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2019-01-14 19:05:31,406 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d964f6f/d2e8a9c1e304458f83ffdfecfef76ac7/FLAG21f775f4a [2019-01-14 19:05:31,789 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d964f6f/d2e8a9c1e304458f83ffdfecfef76ac7 [2019-01-14 19:05:31,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 19:05:31,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 19:05:31,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 19:05:31,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 19:05:31,799 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 19:05:31,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:05:31" (1/1) ... [2019-01-14 19:05:31,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b9d187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:31, skipping insertion in model container [2019-01-14 19:05:31,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:05:31" (1/1) ... [2019-01-14 19:05:31,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 19:05:31,829 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 19:05:32,010 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:05:32,022 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 19:05:32,056 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:05:32,079 INFO L195 MainTranslator]: Completed translation [2019-01-14 19:05:32,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32 WrapperNode [2019-01-14 19:05:32,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 19:05:32,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 19:05:32,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 19:05:32,081 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 19:05:32,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... [2019-01-14 19:05:32,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 19:05:32,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 19:05:32,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 19:05:32,162 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 19:05:32,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:05:32,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 19:05:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 19:05:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-01-14 19:05:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-01-14 19:05:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 19:05:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 19:05:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 19:05:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 19:05:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 19:05:32,854 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 19:05:32,854 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 19:05:32,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:05:32 BoogieIcfgContainer [2019-01-14 19:05:32,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 19:05:32,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 19:05:32,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 19:05:32,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 19:05:32,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 07:05:31" (1/3) ... [2019-01-14 19:05:32,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e60440c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:05:32, skipping insertion in model container [2019-01-14 19:05:32,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:05:32" (2/3) ... [2019-01-14 19:05:32,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e60440c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:05:32, skipping insertion in model container [2019-01-14 19:05:32,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:05:32" (3/3) ... [2019-01-14 19:05:32,871 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2019-01-14 19:05:32,882 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 19:05:32,894 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-01-14 19:05:32,908 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-01-14 19:05:32,930 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 19:05:32,931 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 19:05:32,931 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 19:05:32,931 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 19:05:32,931 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 19:05:32,931 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 19:05:32,932 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 19:05:32,932 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 19:05:32,932 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 19:05:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-01-14 19:05:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:05:32,960 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:32,961 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:32,963 INFO L423 AbstractCegarLoop]: === Iteration 1 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2019-01-14 19:05:32,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:32,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:33,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:33,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:05:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:05:33,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:05:33,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 19:05:33,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 19:05:33,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 19:05:33,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 19:05:33,115 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-01-14 19:05:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:05:33,134 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-01-14 19:05:33,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 19:05:33,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-14 19:05:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:05:33,144 INFO L225 Difference]: With dead ends: 52 [2019-01-14 19:05:33,144 INFO L226 Difference]: Without dead ends: 49 [2019-01-14 19:05:33,146 INFO L631 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 [2019-01-14 19:05:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-01-14 19:05:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-01-14 19:05:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-01-14 19:05:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2019-01-14 19:05:33,184 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2019-01-14 19:05:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:05:33,185 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2019-01-14 19:05:33,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 19:05:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2019-01-14 19:05:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:05:33,186 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:33,186 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:33,186 INFO L423 AbstractCegarLoop]: === Iteration 2 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2019-01-14 19:05:33,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:33,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:33,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:33,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:05:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:05:33,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:05:33,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:05:33,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 19:05:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 19:05:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 19:05:33,242 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 3 states. [2019-01-14 19:05:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:05:33,343 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2019-01-14 19:05:33,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 19:05:33,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-14 19:05:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:05:33,347 INFO L225 Difference]: With dead ends: 56 [2019-01-14 19:05:33,348 INFO L226 Difference]: Without dead ends: 56 [2019-01-14 19:05:33,348 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 19:05:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-01-14 19:05:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2019-01-14 19:05:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-01-14 19:05:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-01-14 19:05:33,361 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2019-01-14 19:05:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:05:33,362 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2019-01-14 19:05:33,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 19:05:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2019-01-14 19:05:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:05:33,364 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:33,364 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:33,364 INFO L423 AbstractCegarLoop]: === Iteration 3 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2019-01-14 19:05:33,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:33,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:33,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:33,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:05:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:05:33,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:05:33,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 19:05:33,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 19:05:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 19:05:33,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:05:33,603 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2019-01-14 19:05:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:05:33,919 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-01-14 19:05:33,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 19:05:33,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-01-14 19:05:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:05:33,922 INFO L225 Difference]: With dead ends: 47 [2019-01-14 19:05:33,923 INFO L226 Difference]: Without dead ends: 47 [2019-01-14 19:05:33,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:05:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-01-14 19:05:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-01-14 19:05:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-01-14 19:05:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-01-14 19:05:33,931 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2019-01-14 19:05:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:05:33,931 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-01-14 19:05:33,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 19:05:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-01-14 19:05:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:05:33,932 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:33,933 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:33,934 INFO L423 AbstractCegarLoop]: === Iteration 4 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2019-01-14 19:05:33,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:33,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:05:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:05:34,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:05:34,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 19:05:34,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 19:05:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 19:05:34,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:05:34,068 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2019-01-14 19:05:34,201 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-01-14 19:05:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:05:34,416 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-01-14 19:05:34,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 19:05:34,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-01-14 19:05:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:05:34,422 INFO L225 Difference]: With dead ends: 72 [2019-01-14 19:05:34,422 INFO L226 Difference]: Without dead ends: 72 [2019-01-14 19:05:34,423 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 19:05:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-01-14 19:05:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2019-01-14 19:05:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-01-14 19:05:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-01-14 19:05:34,434 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2019-01-14 19:05:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:05:34,435 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-01-14 19:05:34,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 19:05:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-01-14 19:05:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 19:05:34,436 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:34,436 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:34,436 INFO L423 AbstractCegarLoop]: === Iteration 5 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:34,437 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2019-01-14 19:05:34,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:34,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:34,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:34,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:34,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:05:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:05:34,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:05:34,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 19:05:34,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 19:05:34,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 19:05:34,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 19:05:34,505 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 3 states. [2019-01-14 19:05:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:05:34,595 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-01-14 19:05:34,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 19:05:34,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-01-14 19:05:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:05:34,598 INFO L225 Difference]: With dead ends: 55 [2019-01-14 19:05:34,598 INFO L226 Difference]: Without dead ends: 55 [2019-01-14 19:05:34,599 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 [2019-01-14 19:05:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-01-14 19:05:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-01-14 19:05:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-01-14 19:05:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2019-01-14 19:05:34,606 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2019-01-14 19:05:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:05:34,606 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-01-14 19:05:34,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 19:05:34,607 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2019-01-14 19:05:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 19:05:34,607 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:05:34,608 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:05:34,608 INFO L423 AbstractCegarLoop]: === Iteration 6 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2019-01-14 19:05:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:05:34,608 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2019-01-14 19:05:34,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:05:34,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:05:34,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:34,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:05:34,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:05:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:05:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:05:34,673 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 19:05:34,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 07:05:34 BoogieIcfgContainer [2019-01-14 19:05:34,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 19:05:34,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 19:05:34,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 19:05:34,701 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 19:05:34,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:05:32" (3/4) ... [2019-01-14 19:05:34,704 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 19:05:34,746 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 19:05:34,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 19:05:34,747 INFO L168 Benchmark]: Toolchain (without parser) took 2954.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -90.0 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2019-01-14 19:05:34,749 INFO L168 Benchmark]: CDTParser took 0.14 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. [2019-01-14 19:05:34,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.72 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. [2019-01-14 19:05:34,750 INFO L168 Benchmark]: Boogie Preprocessor took 80.49 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. [2019-01-14 19:05:34,752 INFO L168 Benchmark]: RCFGBuilder took 696.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-14 19:05:34,753 INFO L168 Benchmark]: TraceAbstraction took 1841.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 11.5 GB. [2019-01-14 19:05:34,753 INFO L168 Benchmark]: Witness Printer took 45.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:05:34,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 285.72 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 80.49 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 696.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1841.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={1:0}, i=0] [L33] COND TRUE i < 100 VAL [b={1:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={1:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={-1:0}, b={1:0}, b={1:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. UNSAFE Result, 1.7s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 227 SDtfs, 75 SDslu, 214 SDs, 0 SdLazy, 169 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1443 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...