./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 0dfe0f165ef563fbd088ad0368faf44ddd32870a ....................................................................................................................................................................................................................................................................................... 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 22:13:14,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:13:14,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:13:14,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:13:14,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:13:14,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:13:14,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:13:14,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:13:14,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:13:14,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:13:14,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:13:14,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:13:14,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:13:14,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:13:14,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:13:14,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:13:14,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:13:14,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:13:14,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:13:14,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:13:14,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:13:14,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:13:14,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:13:14,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:13:14,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:13:14,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:13:14,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:13:14,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:13:14,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:13:14,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:13:14,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:13:14,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:13:14,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:13:14,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:13:14,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:13:14,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:13:14,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:13:14,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:13:14,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:13:14,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:13:14,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:13:14,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:13:14,202 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:13:14,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:13:14,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:13:14,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:13:14,205 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:13:14,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:13:14,205 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:13:14,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:13:14,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:13:14,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:13:14,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:13:14,207 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:13:14,208 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:13:14,208 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:13:14,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:13:14,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:13:14,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:13:14,209 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:13:14,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:13:14,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:13:14,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:13:14,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:13:14,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:13:14,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:13:14,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:13:14,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:13:14,212 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:13:14,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:13:14,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:13:14,213 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2019-11-19 22:13:14,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:13:14,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:13:14,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:13:14,588 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:13:14,589 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:13:14,590 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2019-11-19 22:13:14,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14b86991/1ea30d44542f43d4aeb83e87bccdd365/FLAG9abd9d2e9 [2019-11-19 22:13:15,124 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:13:15,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2019-11-19 22:13:15,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14b86991/1ea30d44542f43d4aeb83e87bccdd365/FLAG9abd9d2e9 [2019-11-19 22:13:15,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14b86991/1ea30d44542f43d4aeb83e87bccdd365 [2019-11-19 22:13:15,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:13:15,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:13:15,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:13:15,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:13:15,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:13:15,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abddd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15, skipping insertion in model container [2019-11-19 22:13:15,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:13:15,519 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:13:15,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:13:15,787 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:13:15,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:13:15,826 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:13:15,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15 WrapperNode [2019-11-19 22:13:15,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:13:15,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:13:15,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:13:15,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:13:15,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... [2019-11-19 22:13:15,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:13:15,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:13:15,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:13:15,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:13:15,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:13:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:13:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:13:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-19 22:13:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:13:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-19 22:13:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 22:13:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:13:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:13:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 22:13:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:13:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:13:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:13:16,378 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:13:16,378 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-19 22:13:16,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:13:16 BoogieIcfgContainer [2019-11-19 22:13:16,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:13:16,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:13:16,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:13:16,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:13:16,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:13:15" (1/3) ... [2019-11-19 22:13:16,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521aa8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:13:16, skipping insertion in model container [2019-11-19 22:13:16,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:15" (2/3) ... [2019-11-19 22:13:16,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521aa8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:13:16, skipping insertion in model container [2019-11-19 22:13:16,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:13:16" (3/3) ... [2019-11-19 22:13:16,389 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2019-11-19 22:13:16,400 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:13:16,407 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-19 22:13:16,418 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-19 22:13:16,440 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:13:16,440 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:13:16,441 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:13:16,441 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:13:16,441 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:13:16,441 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:13:16,441 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:13:16,442 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:13:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-19 22:13:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:13:16,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:13:16,474 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:13:16,474 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:13:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:13:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1189569057, now seen corresponding path program 1 times [2019-11-19 22:13:16,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:13:16,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1865403014] [2019-11-19 22:13:16,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:13:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:13:16,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:13:16,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:13:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:13:16,623 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:13:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:13:16,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1865403014] [2019-11-19 22:13:16,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:13:16,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-19 22:13:16,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242584724] [2019-11-19 22:13:16,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:13:16,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:13:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:13:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:13:16,667 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2019-11-19 22:13:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:13:16,822 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2019-11-19 22:13:16,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:13:16,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-19 22:13:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:13:16,834 INFO L225 Difference]: With dead ends: 61 [2019-11-19 22:13:16,834 INFO L226 Difference]: Without dead ends: 56 [2019-11-19 22:13:16,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:13:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-19 22:13:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-11-19 22:13:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-19 22:13:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2019-11-19 22:13:16,875 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 10 [2019-11-19 22:13:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:13:16,876 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2019-11-19 22:13:16,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:13:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2019-11-19 22:13:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 22:13:16,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:13:16,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:13:17,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:13:17,079 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:13:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:13:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1775375512, now seen corresponding path program 1 times [2019-11-19 22:13:17,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:13:17,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1581796276] [2019-11-19 22:13:17,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:13:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:13:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:13:17,220 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 22:13:17,221 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:13:17,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:13:17,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:13:17 BoogieIcfgContainer [2019-11-19 22:13:17,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:13:17,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:13:17,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:13:17,454 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:13:17,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:13:16" (3/4) ... [2019-11-19 22:13:17,458 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:13:17,498 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 22:13:17,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:13:17,501 INFO L168 Benchmark]: Toolchain (without parser) took 2015.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -89.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:13:17,502 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:13:17,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.58 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:13:17,504 INFO L168 Benchmark]: Boogie Preprocessor took 121.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:13:17,504 INFO L168 Benchmark]: RCFGBuilder took 430.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:13:17,505 INFO L168 Benchmark]: TraceAbstraction took 1072.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:13:17,506 INFO L168 Benchmark]: Witness Printer took 44.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:13:17,509 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.58 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 121.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 430.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1072.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.76 ms. Allocated memory is still 1.1 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: 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={3:0}, i=0] [L22] COND TRUE i < 100 VAL [b={3:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={3:0}, b={3:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={3:0}, b={3:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={3:0}, b={3:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 8 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 42 SDslu, 29 SDs, 0 SdLazy, 25 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=1, 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 1 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...