./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/scopes1.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 95e3931fe811aa62c0e25f30e6d631683a52857f ..................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:17:24,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:17:24,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:17:24,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:17:24,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:17:24,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:17:24,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:17:24,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:17:24,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:17:24,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:17:24,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:17:24,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:17:24,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:17:24,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:17:24,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:17:24,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:17:24,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:17:24,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:17:24,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:17:24,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:17:24,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:17:24,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:17:24,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:17:24,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:17:24,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:17:24,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:17:24,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:17:24,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:17:24,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:17:24,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:17:24,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:17:24,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:17:24,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:17:24,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:17:24,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:17:24,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:17:24,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:17:24,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:17:24,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:17:24,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:17:24,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:17:24,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-07-29 01:17:24,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:17:24,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:17:24,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:17:24,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:17:24,177 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:17:24,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:17:24,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:17:24,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:17:24,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:17:24,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:17:24,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:17:24,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 01:17:24,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 01:17:24,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 01:17:24,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:17:24,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 01:17:24,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:17:24,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:17:24,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:17:24,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:17:24,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:17:24,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:17:24,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:17:24,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:17:24,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:17:24,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:17:24,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:17:24,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:17:24,185 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 -> 95e3931fe811aa62c0e25f30e6d631683a52857f [2020-07-29 01:17:24,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:17:24,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:17:24,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:17:24,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:17:24,522 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:17:24,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-07-29 01:17:24,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba817730/9682772333624fd38b35990f5c0e0eec/FLAG5950b45e7 [2020-07-29 01:17:25,051 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:17:25,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-07-29 01:17:25,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba817730/9682772333624fd38b35990f5c0e0eec/FLAG5950b45e7 [2020-07-29 01:17:25,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba817730/9682772333624fd38b35990f5c0e0eec [2020-07-29 01:17:25,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:17:25,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 01:17:25,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:17:25,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:17:25,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:17:25,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82c6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25, skipping insertion in model container [2020-07-29 01:17:25,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:17:25,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:17:25,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:17:25,772 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:17:25,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:17:25,813 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:17:25,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25 WrapperNode [2020-07-29 01:17:25,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:17:25,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:17:25,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:17:25,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:17:25,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (1/1) ... [2020-07-29 01:17:25,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:17:25,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:17:25,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:17:25,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:17:25,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (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 [2020-07-29 01:17:26,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 01:17:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:17:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 01:17:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-29 01:17:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 01:17:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 01:17:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-29 01:17:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-29 01:17:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 01:17:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 01:17:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:17:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 01:17:26,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:17:26,371 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-29 01:17:26,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:26 BoogieIcfgContainer [2020-07-29 01:17:26,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:17:26,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:17:26,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:17:26,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:17:26,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:17:25" (1/3) ... [2020-07-29 01:17:26,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe86eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:17:26, skipping insertion in model container [2020-07-29 01:17:26,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:17:25" (2/3) ... [2020-07-29 01:17:26,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe86eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:17:26, skipping insertion in model container [2020-07-29 01:17:26,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:26" (3/3) ... [2020-07-29 01:17:26,383 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes1.c [2020-07-29 01:17:26,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:17:26,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-07-29 01:17:26,424 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-07-29 01:17:26,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:17:26,444 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 01:17:26,444 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:17:26,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:17:26,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:17:26,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:17:26,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:17:26,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:17:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-29 01:17:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:17:26,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:17:26,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:17:26,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-07-29 01:17:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:17:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2123086958, now seen corresponding path program 1 times [2020-07-29 01:17:26,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:17:26,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409289856] [2020-07-29 01:17:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:17:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:17:26,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:17:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:17:26,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:17:26,661 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:17:26,662 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:17:26,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:17:26,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:17:26 BoogieIcfgContainer [2020-07-29 01:17:26,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:17:26,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:17:26,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:17:26,691 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:17:26,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:17:26" (3/4) ... [2020-07-29 01:17:26,694 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:17:26,740 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:17:26,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:17:26,744 INFO L168 Benchmark]: Toolchain (without parser) took 1300.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:26,745 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:17:26,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.78 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:26,747 INFO L168 Benchmark]: Boogie Preprocessor took 149.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:26,748 INFO L168 Benchmark]: RCFGBuilder took 409.21 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:26,749 INFO L168 Benchmark]: TraceAbstraction took 313.49 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:17:26,749 INFO L168 Benchmark]: Witness Printer took 50.70 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. [2020-07-29 01:17:26,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 370.78 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 149.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 409.21 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313.49 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.70 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: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L4] int *myPointerA = ((void*) 0); [L5] int *myPointerB = ((void*) 0); [L8] int myNumberA = 7; [L9] myPointerA = &myNumberA [L8] int myNumberA = 7; [L13] int myNumberB = 3; [L14] myPointerB = &myNumberB VAL [myNumberB={8:0}, myPointerA={5:0}, myPointerB={8:0}] [L16] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 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=18occurred 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, 7 NumberOfCodeBlocks, 7 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...