./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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/memsafety-ext3/scopes2.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 a06ac35b6270d716926f4cab09091bb160bdd736 ...................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 06:17:03,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:03,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:03,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:03,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:03,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:03,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:03,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:03,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:03,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:03,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:03,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:03,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:03,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:03,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:03,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:03,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:03,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:03,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:03,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:03,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:03,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:03,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:03,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:03,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:03,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:03,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:03,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:03,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:03,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:03,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:03,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:03,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:03,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:03,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:03,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:03,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:03,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:03,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:03,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:03,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:03,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:17:03,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:03,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:03,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:03,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:03,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:03,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:03,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:17:03,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:03,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:03,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:17:03,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:03,441 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:03,441 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:03,441 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:03,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:03,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:03,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:17:03,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:03,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:03,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:03,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:03,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:03,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:03,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:03,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:03,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:03,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:03,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:03,446 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 -> a06ac35b6270d716926f4cab09091bb160bdd736 [2020-10-20 06:17:03,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:03,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:03,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:03,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:03,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:03,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-10-20 06:17:03,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed0a5cce/045ef43a55c840a49be34c7fc837f334/FLAG4a84d2094 [2020-10-20 06:17:04,268 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:04,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes2.c [2020-10-20 06:17:04,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed0a5cce/045ef43a55c840a49be34c7fc837f334/FLAG4a84d2094 [2020-10-20 06:17:04,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed0a5cce/045ef43a55c840a49be34c7fc837f334 [2020-10-20 06:17:04,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:04,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:04,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:04,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:04,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:04,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:04" (1/1) ... [2020-10-20 06:17:04,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c59781d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:04, skipping insertion in model container [2020-10-20 06:17:04,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:04" (1/1) ... [2020-10-20 06:17:04,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:04,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:04,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:04,961 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:04,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:04,999 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:05,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05 WrapperNode [2020-10-20 06:17:05,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:05,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:05,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:05,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:05,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (1/1) ... [2020-10-20 06:17:05,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:05,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:05,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:05,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:05,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (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 [2020-10-20 06:17:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-20 06:17:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:17:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:05,334 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:17:05,334 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:17:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:05 BoogieIcfgContainer [2020-10-20 06:17:05,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:17:05,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:17:05,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:17:05,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:17:05,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:04" (1/3) ... [2020-10-20 06:17:05,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f6418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:05, skipping insertion in model container [2020-10-20 06:17:05,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:05" (2/3) ... [2020-10-20 06:17:05,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462f6418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:05, skipping insertion in model container [2020-10-20 06:17:05,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:05" (3/3) ... [2020-10-20 06:17:05,349 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2020-10-20 06:17:05,367 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:17:05,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 06:17:05,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 06:17:05,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:17:05,434 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:17:05,435 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:17:05,435 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:17:05,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:17:05,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:17:05,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:17:05,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:17:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 06:17:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:17:05,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:05,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:05,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 262489660, now seen corresponding path program 1 times [2020-10-20 06:17:05,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:05,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613560679] [2020-10-20 06:17:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:05,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:05,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:05,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:17:05,671 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:17:05,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:17:05,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:05 BoogieIcfgContainer [2020-10-20 06:17:05,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:05,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:05,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:05,709 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:05,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:05" (3/4) ... [2020-10-20 06:17:05,713 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:17:05,759 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:05,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:05,762 INFO L168 Benchmark]: Toolchain (without parser) took 1121.51 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 21.0 MB in the beginning and 25.8 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:17:05,763 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.55 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.1 MB in the beginning and 22.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,765 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 43.5 MB. Free memory was 22.0 MB in the beginning and 20.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,767 INFO L168 Benchmark]: RCFGBuilder took 304.12 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 20.4 MB in the beginning and 24.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,768 INFO L168 Benchmark]: TraceAbstraction took 368.53 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 27.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,769 INFO L168 Benchmark]: Witness Printer took 51.82 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:05,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 354.55 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 20.1 MB in the beginning and 22.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 43.5 MB. Free memory was 22.0 MB in the beginning and 20.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 304.12 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 20.4 MB in the beginning and 24.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 368.53 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 27.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. * Witness Printer took 51.82 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND TRUE __VERIFIER_nondet_int() [L10] int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] int myNumberA = 7; VAL [myPointerA={8:0}, myPointerB={0:0}] [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB VAL [myNumberB={5:0}, myPointerA={8:0}, myPointerB={5:0}] [L18] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...