./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memset2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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/memset2_-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 504b8754db5656e557502f2f9e958956c9b0cd94 ............................................................................................................................................................................................................................................................... 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-f470102 [2019-11-28 20:13:33,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:13:33,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:13:33,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:13:33,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:13:33,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:13:33,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:13:33,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:13:33,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:13:33,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:13:33,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:13:33,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:13:33,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:13:33,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:13:33,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:13:33,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:13:33,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:13:33,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:13:33,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:13:33,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:13:33,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:13:33,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:13:33,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:13:33,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:13:33,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:13:33,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:13:33,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:13:33,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:13:33,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:13:33,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:13:33,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:13:33,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:13:33,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:13:33,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:13:33,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:13:33,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:13:33,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:13:33,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:13:33,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:13:33,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:13:33,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:13:33,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:13:33,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:13:33,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:13:33,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:13:33,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:13:33,619 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:13:33,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:13:33,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:13:33,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:13:33,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:13:33,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:13:33,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:13:33,621 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:13:33,622 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:13:33,622 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:13:33,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:13:33,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:13:33,623 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:13:33,623 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:13:33,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:13:33,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:13:33,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:13:33,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:13:33,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:13:33,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:13:33,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:13:33,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:13:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:13:33,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:13:33,628 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 -> 504b8754db5656e557502f2f9e958956c9b0cd94 [2019-11-28 20:13:33,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:13:33,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:13:33,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:13:33,976 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:13:33,976 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:13:33,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-11-28 20:13:34,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fed3974c/e8bece8daf3347a893b73d1d3f49decb/FLAGe2ea49cee [2019-11-28 20:13:34,484 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:13:34,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-11-28 20:13:34,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fed3974c/e8bece8daf3347a893b73d1d3f49decb/FLAGe2ea49cee [2019-11-28 20:13:34,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fed3974c/e8bece8daf3347a893b73d1d3f49decb [2019-11-28 20:13:34,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:13:34,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:13:34,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:13:34,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:13:34,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:13:34,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:13:34" (1/1) ... [2019-11-28 20:13:34,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2cbe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:34, skipping insertion in model container [2019-11-28 20:13:34,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:13:34" (1/1) ... [2019-11-28 20:13:34,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:13:34,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:13:35,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:13:35,069 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:13:35,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:13:35,108 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:13:35,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35 WrapperNode [2019-11-28 20:13:35,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:13:35,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:13:35,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:13:35,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:13:35,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (1/1) ... [2019-11-28 20:13:35,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:13:35,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:13:35,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:13:35,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:13:35,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (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 [2019-11-28 20:13:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:13:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:13:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:13:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-28 20:13:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-28 20:13:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:13:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:13:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-28 20:13:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:13:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:13:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:13:35,389 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-28 20:13:35,456 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:13:35,456 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-28 20:13:35,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:13:35 BoogieIcfgContainer [2019-11-28 20:13:35,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:13:35,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:13:35,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:13:35,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:13:35,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:13:34" (1/3) ... [2019-11-28 20:13:35,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef815eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:13:35, skipping insertion in model container [2019-11-28 20:13:35,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:13:35" (2/3) ... [2019-11-28 20:13:35,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef815eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:13:35, skipping insertion in model container [2019-11-28 20:13:35,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:13:35" (3/3) ... [2019-11-28 20:13:35,467 INFO L109 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2019-11-28 20:13:35,477 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:13:35,484 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 20:13:35,498 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 20:13:35,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:13:35,523 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:13:35,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:13:35,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:13:35,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:13:35,524 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:13:35,524 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:13:35,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:13:35,544 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-28 20:13:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:13:35,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:13:35,560 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:13:35,561 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:13:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:13:35,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-11-28 20:13:35,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:13:35,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015387914] [2019-11-28 20:13:35,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:13:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:13:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:13:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:13:35,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015387914] [2019-11-28 20:13:35,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:13:35,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:13:35,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706798090] [2019-11-28 20:13:35,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:13:35,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:13:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:13:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:13:35,828 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-11-28 20:13:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:13:35,937 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 20:13:35,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:13:35,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 20:13:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:13:35,948 INFO L225 Difference]: With dead ends: 19 [2019-11-28 20:13:35,948 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 20:13:35,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:13:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 20:13:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 20:13:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 20:13:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-28 20:13:35,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-28 20:13:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:13:35,982 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-28 20:13:35,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:13:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-28 20:13:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:13:35,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:13:35,984 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:13:35,984 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 20:13:35,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:13:35,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-11-28 20:13:35,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:13:35,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432640014] [2019-11-28 20:13:35,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:13:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:13:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:13:36,056 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:13:36,056 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:13:36,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:13:36 BoogieIcfgContainer [2019-11-28 20:13:36,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:13:36,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:13:36,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:13:36,078 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:13:36,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:13:35" (3/4) ... [2019-11-28 20:13:36,080 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:13:36,114 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:13:36,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:13:36,117 INFO L168 Benchmark]: Toolchain (without parser) took 1261.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -130.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:13:36,118 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:13:36,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.14 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:13:36,120 INFO L168 Benchmark]: Boogie Preprocessor took 93.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:13:36,121 INFO L168 Benchmark]: RCFGBuilder took 254.46 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: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:13:36,122 INFO L168 Benchmark]: TraceAbstraction took 618.42 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: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:13:36,123 INFO L168 Benchmark]: Witness Printer took 36.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:13:36,127 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.14 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 93.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 254.46 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: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 618.42 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: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...