./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.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 aeae4642ea0f346b37f312868ec7e7128e333d20 ..................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-26 03:36:34,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:36:34,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:36:34,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:36:34,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:36:34,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:36:34,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:36:34,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:36:34,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:36:34,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:36:34,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:36:34,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:36:34,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:36:34,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:36:34,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:36:34,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:36:34,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:36:34,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:36:34,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:36:34,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:36:34,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:36:34,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:36:34,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:36:34,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:36:34,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:36:34,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:36:34,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:36:34,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:36:34,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:36:34,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:36:34,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:36:34,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:36:34,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:36:34,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:36:34,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:36:34,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:36:34,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:36:34,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:36:34,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:36:34,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:36:34,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:36:34,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:36:34,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:36:34,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:36:34,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:36:34,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:36:34,968 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:36:34,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:36:34,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:36:34,969 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:36:34,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:36:34,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:36:34,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:36:34,972 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:36:34,972 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:36:34,972 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:36:34,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:36:34,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:36:34,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:36:34,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:36:34,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:36:34,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:36:34,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:36:34,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:36:34,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:36:34,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:36:34,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:36:34,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:36:34,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:36:34,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:36:34,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeae4642ea0f346b37f312868ec7e7128e333d20 [2020-10-26 03:36:35,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:36:35,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:36:35,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:36:35,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:36:35,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:36:35,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-10-26 03:36:35,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3bb255/4765755f7be1476994081beeb18c6f56/FLAGe727f8440 [2020-10-26 03:36:36,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:36:36,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-10-26 03:36:36,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3bb255/4765755f7be1476994081beeb18c6f56/FLAGe727f8440 [2020-10-26 03:36:36,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3bb255/4765755f7be1476994081beeb18c6f56 [2020-10-26 03:36:36,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:36:36,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:36:36,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:36,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:36:36,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:36:36,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8abe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36, skipping insertion in model container [2020-10-26 03:36:36,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:36:36,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:36:36,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:36,776 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:36:36,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:36,805 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:36:36,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36 WrapperNode [2020-10-26 03:36:36,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:36,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:36:36,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:36:36,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:36:36,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... [2020-10-26 03:36:36,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:36:36,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:36:36,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:36:36,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:36:36,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:36:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:36:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:36:36,933 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-26 03:36:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:36:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-26 03:36:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:36:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:36:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:36:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:36:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:36:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:36:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:36:37,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:36:37,302 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:36:37,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:37 BoogieIcfgContainer [2020-10-26 03:36:37,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:36:37,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:36:37,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:36:37,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:36:37,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:36:36" (1/3) ... [2020-10-26 03:36:37,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a071c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:37, skipping insertion in model container [2020-10-26 03:36:37,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:36" (2/3) ... [2020-10-26 03:36:37,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a071c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:37, skipping insertion in model container [2020-10-26 03:36:37,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:37" (3/3) ... [2020-10-26 03:36:37,313 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2020-10-26 03:36:37,330 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:36:37,336 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-26 03:36:37,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-26 03:36:37,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:36:37,382 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:36:37,382 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:36:37,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:36:37,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:36:37,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:36:37,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:36:37,383 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:36:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-26 03:36:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:36:37,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:37,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:37,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:37,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1189570050, now seen corresponding path program 1 times [2020-10-26 03:36:37,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:37,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653441731] [2020-10-26 03:36:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:37,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653441731] [2020-10-26 03:36:37,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:37,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:36:37,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210752580] [2020-10-26 03:36:37,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:37,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:37,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:36:37,732 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-26 03:36:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:38,000 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-26 03:36:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:38,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:36:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:38,022 INFO L225 Difference]: With dead ends: 46 [2020-10-26 03:36:38,023 INFO L226 Difference]: Without dead ends: 43 [2020-10-26 03:36:38,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:36:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-26 03:36:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-26 03:36:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:36:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-26 03:36:38,081 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 10 [2020-10-26 03:36:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:38,082 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-26 03:36:38,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-26 03:36:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:36:38,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:38,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:38,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:36:38,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1775375512, now seen corresponding path program 1 times [2020-10-26 03:36:38,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:38,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200023889] [2020-10-26 03:36:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:36:38,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:36:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:36:38,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:36:38,152 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:36:38,153 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:36:38,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:36:38,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:36:38 BoogieIcfgContainer [2020-10-26 03:36:38,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:36:38,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:36:38,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:36:38,192 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:36:38,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:37" (3/4) ... [2020-10-26 03:36:38,195 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:36:38,239 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:36:38,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:36:38,242 INFO L168 Benchmark]: Toolchain (without parser) took 1727.27 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 43.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:38,243 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:36:38,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.66 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:38,245 INFO L168 Benchmark]: Boogie Preprocessor took 42.38 ms. Allocated memory is still 50.3 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:36:38,246 INFO L168 Benchmark]: RCFGBuilder took 453.40 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 24.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:38,247 INFO L168 Benchmark]: TraceAbstraction took 885.01 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 25.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:38,247 INFO L168 Benchmark]: Witness Printer took 48.47 ms. Allocated memory is still 60.8 MB. Free memory was 25.6 MB in the beginning and 43.1 MB in the end (delta: -17.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:36:38,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.66 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.38 ms. Allocated memory is still 50.3 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 453.40 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 24.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 885.01 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 25.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Witness Printer took 48.47 ms. Allocated memory is still 60.8 MB. Free memory was 25.6 MB in the beginning and 43.1 MB in the end (delta: -17.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 27 SDslu, 14 SDs, 0 SdLazy, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...