./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 906a4fb5 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_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 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 --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:06:59,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:06:59,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:06:59,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:06:59,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:06:59,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:06:59,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:06:59,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:06:59,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:06:59,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:06:59,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:06:59,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:06:59,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:06:59,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:06:59,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:06:59,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:06:59,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:06:59,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:06:59,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:06:59,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:06:59,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:06:59,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:06:59,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:06:59,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:06:59,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:06:59,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:06:59,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:06:59,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:06:59,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:06:59,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:06:59,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:06:59,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:06:59,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:06:59,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:06:59,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:06:59,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:06:59,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:06:59,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:06:59,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:06:59,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:06:59,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:06:59,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:06:59,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:06:59,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:06:59,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:06:59,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:06:59,603 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:06:59,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:06:59,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:06:59,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:06:59,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:06:59,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:06:59,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:06:59,605 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:06:59,606 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:06:59,606 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:06:59,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:06:59,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:06:59,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:06:59,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:06:59,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:06:59,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:06:59,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:06:59,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:06:59,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:06:59,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:06:59,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:06:59,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:06:59,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:06:59,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:06:59,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-19 18:06:59,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:06:59,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:06:59,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:06:59,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:06:59,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:06:59,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-10-19 18:07:00,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f3ffc33/fd423354fc8440f5a6c63ed4e00adc54/FLAG00a99235b [2020-10-19 18:07:00,478 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:07:00,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-10-19 18:07:00,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f3ffc33/fd423354fc8440f5a6c63ed4e00adc54/FLAG00a99235b [2020-10-19 18:07:00,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f3ffc33/fd423354fc8440f5a6c63ed4e00adc54 [2020-10-19 18:07:00,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:07:00,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:07:00,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:07:00,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:07:00,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:07:00,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:07:00" (1/1) ... [2020-10-19 18:07:00,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184b88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:00, skipping insertion in model container [2020-10-19 18:07:00,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:07:00" (1/1) ... [2020-10-19 18:07:00,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:07:00,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:07:01,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:07:01,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:07:01,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:07:01,121 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:07:01,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01 WrapperNode [2020-10-19 18:07:01,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:07:01,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:07:01,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:07:01,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:07:01,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (1/1) ... [2020-10-19 18:07:01,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:07:01,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:07:01,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:07:01,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:07:01,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (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 [2020-10-19 18:07:01,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:07:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:07:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-19 18:07:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:07:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-19 18:07:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:07:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:07:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:07:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:07:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:07:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:07:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:07:01,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:07:01,615 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 18:07:01,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:07:01 BoogieIcfgContainer [2020-10-19 18:07:01,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:07:01,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:07:01,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:07:01,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:07:01,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:07:00" (1/3) ... [2020-10-19 18:07:01,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6dbbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:07:01, skipping insertion in model container [2020-10-19 18:07:01,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:07:01" (2/3) ... [2020-10-19 18:07:01,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6dbbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:07:01, skipping insertion in model container [2020-10-19 18:07:01,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:07:01" (3/3) ... [2020-10-19 18:07:01,626 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2020-10-19 18:07:01,639 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:07:01,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-19 18:07:01,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-19 18:07:01,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:07:01,683 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:07:01,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:07:01,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:07:01,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:07:01,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:07:01,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:07:01,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:07:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-19 18:07:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:07:01,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:07:01,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:07:01,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:07:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:07:01,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-10-19 18:07:01,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:07:01,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119229189] [2020-10-19 18:07:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:07:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:07:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:07:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:07:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:07:01,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119229189] [2020-10-19 18:07:01,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:07:01,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:07:01,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888611356] [2020-10-19 18:07:01,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:07:01,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:07:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:07:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:07:01,948 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-19 18:07:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:07:02,132 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-19 18:07:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:07:02,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:07:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:07:02,144 INFO L225 Difference]: With dead ends: 58 [2020-10-19 18:07:02,144 INFO L226 Difference]: Without dead ends: 54 [2020-10-19 18:07:02,147 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 [2020-10-19 18:07:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-19 18:07:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-19 18:07:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:07:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-19 18:07:02,192 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-10-19 18:07:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:07:02,193 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-19 18:07:02,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:07:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-19 18:07:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:07:02,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:07:02,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:07:02,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:07:02,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-19 18:07:02,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:07:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-10-19 18:07:02,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:07:02,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285507647] [2020-10-19 18:07:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:07:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:07:02,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:07:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:07:02,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:07:02,257 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:07:02,257 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:07:02,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:07:02,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:07:02 BoogieIcfgContainer [2020-10-19 18:07:02,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:07:02,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:07:02,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:07:02,286 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:07:02,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:07:01" (3/4) ... [2020-10-19 18:07:02,289 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:07:02,335 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:07:02,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:07:02,338 INFO L168 Benchmark]: Toolchain (without parser) took 1492.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 959.9 MB in the beginning and 1.1 GB in the end (delta: -103.6 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,339 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:07:02,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.28 ms. Allocated memory is still 1.0 GB. Free memory was 959.9 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,340 INFO L168 Benchmark]: Boogie Preprocessor took 88.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,341 INFO L168 Benchmark]: RCFGBuilder took 404.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,342 INFO L168 Benchmark]: TraceAbstraction took 666.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,343 INFO L168 Benchmark]: Witness Printer took 49.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:07:02,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.28 ms. Allocated memory is still 1.0 GB. Free memory was 959.9 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 404.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 666.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. 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={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 7 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=40occurred 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, 15 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, 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...