./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.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/derefAfterFree1.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 d452f938d74713dbff7e0330f8ef393409d67ffe ................................................................................................................................................................................................................................................................................................................................................................ 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 06:16:42,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:42,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:42,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:42,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:42,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:42,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:42,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:42,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:42,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:42,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:42,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:42,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:42,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:42,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:42,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:42,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:42,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:42,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:42,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:42,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:42,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:42,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:42,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:42,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:42,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:42,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:42,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:42,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:42,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:42,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:42,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:42,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:42,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:42,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:42,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:42,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:42,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:42,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:42,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:42,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:42,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:16:42,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:42,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:42,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:42,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:42,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:42,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:42,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:42,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:42,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:42,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:42,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:42,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:42,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:42,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:42,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:42,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:42,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:42,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:42,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:42,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:42,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:16:42,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:16:42,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:42,176 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 -> d452f938d74713dbff7e0330f8ef393409d67ffe [2020-10-20 06:16:42,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:42,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:42,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:42,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:42,446 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:42,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-10-20 06:16:42,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601f8d6c8/f99d2726d25642039df0fcf571aa6e3c/FLAG732524419 [2020-10-20 06:16:42,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:42,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-10-20 06:16:42,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601f8d6c8/f99d2726d25642039df0fcf571aa6e3c/FLAG732524419 [2020-10-20 06:16:43,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601f8d6c8/f99d2726d25642039df0fcf571aa6e3c [2020-10-20 06:16:43,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:43,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:43,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:43,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:43,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:43,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b42c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43, skipping insertion in model container [2020-10-20 06:16:43,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:43,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:43,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:43,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:43,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:43,703 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:43,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43 WrapperNode [2020-10-20 06:16:43,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:43,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:43,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:43,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:43,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (1/1) ... [2020-10-20 06:16:43,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:43,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:43,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:43,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:43,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (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 06:16:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure freePointer [2020-10-20 06:16:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:16:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:16:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure freePointer [2020-10-20 06:16:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:16:43,997 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:43,998 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:16:44,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:44 BoogieIcfgContainer [2020-10-20 06:16:44,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:44,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:44,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:44,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:44,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:43" (1/3) ... [2020-10-20 06:16:44,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f498c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:44, skipping insertion in model container [2020-10-20 06:16:44,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:43" (2/3) ... [2020-10-20 06:16:44,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f498c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:44, skipping insertion in model container [2020-10-20 06:16:44,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:44" (3/3) ... [2020-10-20 06:16:44,010 INFO L111 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2020-10-20 06:16:44,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:44,031 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:16:44,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:16:44,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:44,117 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:44,117 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:44,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:44,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:44,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:44,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:44,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-20 06:16:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:44,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:44,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:44,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:16:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1608321379, now seen corresponding path program 1 times [2020-10-20 06:16:44,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:44,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694293177] [2020-10-20 06:16:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:44,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694293177] [2020-10-20 06:16:44,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:44,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:16:44,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380387777] [2020-10-20 06:16:44,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:44,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:44,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:44,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:16:44,422 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-20 06:16:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:44,601 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-20 06:16:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:44,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 06:16:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:44,614 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:16:44,615 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:16:44,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:16:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:16:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 06:16:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:16:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-10-20 06:16:44,658 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2020-10-20 06:16:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:44,659 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-10-20 06:16:44,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-10-20 06:16:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:16:44,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:44,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:44,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:16:44,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:16:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:44,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1681644769, now seen corresponding path program 1 times [2020-10-20 06:16:44,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:44,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319403909] [2020-10-20 06:16:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:44,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319403909] [2020-10-20 06:16:44,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:44,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:16:44,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222619852] [2020-10-20 06:16:44,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:44,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:16:44,784 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 6 states. [2020-10-20 06:16:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:44,885 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-10-20 06:16:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:16:44,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:16:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:44,887 INFO L225 Difference]: With dead ends: 20 [2020-10-20 06:16:44,887 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 06:16:44,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 06:16:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-20 06:16:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:16:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-10-20 06:16:44,894 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2020-10-20 06:16:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:44,895 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-10-20 06:16:44,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-10-20 06:16:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:16:44,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:44,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:44,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:16:44,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:16:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:44,897 INFO L82 PathProgramCache]: Analyzing trace with hash -591380251, now seen corresponding path program 1 times [2020-10-20 06:16:44,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:44,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195699113] [2020-10-20 06:16:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:44,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195699113] [2020-10-20 06:16:44,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:44,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:16:44,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054814610] [2020-10-20 06:16:44,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:44,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:44,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:16:44,977 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2020-10-20 06:16:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:45,057 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-20 06:16:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:16:45,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 06:16:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:45,059 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:16:45,059 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 06:16:45,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 06:16:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 06:16:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:16:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-20 06:16:45,064 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2020-10-20 06:16:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:45,065 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-20 06:16:45,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-20 06:16:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:16:45,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:45,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:45,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:16:45,067 INFO L429 AbstractCegarLoop]: === Iteration 4 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:16:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 146827991, now seen corresponding path program 1 times [2020-10-20 06:16:45,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:45,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563755972] [2020-10-20 06:16:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:45,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:45,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:45,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:16:45,148 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:16:45,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:16:45,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:16:45 BoogieIcfgContainer [2020-10-20 06:16:45,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:16:45,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:16:45,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:16:45,192 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:16:45,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:44" (3/4) ... [2020-10-20 06:16:45,196 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:16:45,274 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:16:45,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:16:45,277 INFO L168 Benchmark]: Toolchain (without parser) took 1935.37 ms. Allocated memory was 34.1 MB in the beginning and 48.8 MB in the end (delta: 14.7 MB). Free memory was 11.3 MB in the beginning and 28.5 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:16:45,278 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.0 MB. Free memory is still 18.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:16:45,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.90 ms. Allocated memory was 34.1 MB in the beginning and 43.0 MB in the end (delta: 8.9 MB). Free memory was 10.5 MB in the beginning and 23.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:45,280 INFO L168 Benchmark]: Boogie Preprocessor took 27.38 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:45,281 INFO L168 Benchmark]: RCFGBuilder took 267.96 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 21.5 MB in the end (delta: 768.9 kB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:45,282 INFO L168 Benchmark]: TraceAbstraction took 1188.90 ms. Allocated memory was 45.1 MB in the beginning and 48.8 MB in the end (delta: 3.7 MB). Free memory was 20.9 MB in the beginning and 30.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:45,283 INFO L168 Benchmark]: Witness Printer took 83.46 ms. Allocated memory is still 48.8 MB. Free memory was 30.4 MB in the beginning and 28.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:45,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.0 MB. Free memory is still 18.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 356.90 ms. Allocated memory was 34.1 MB in the beginning and 43.0 MB in the end (delta: 8.9 MB). Free memory was 10.5 MB in the beginning and 23.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.38 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 267.96 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 21.5 MB in the end (delta: 768.9 kB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1188.90 ms. Allocated memory was 45.1 MB in the beginning and 48.8 MB in the end (delta: 3.7 MB). Free memory was 20.9 MB in the beginning and 30.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * Witness Printer took 83.46 ms. Allocated memory is still 48.8 MB. Free memory was 30.4 MB in the beginning and 28.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); VAL [malloc(10 * sizeof(int))={2:0}, p={2:0}] [L12] CALL freePointer(p) VAL [p={2:0}] [L6] free(p) VAL [p={2:0}, p={2:0}] [L6] free(p) VAL [p={2:0}, p={2:0}] [L6] free(p) [L12] RET freePointer(p) VAL [malloc(10 * sizeof(int))={2:0}, p={2:0}] [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 47 SDslu, 75 SDs, 0 SdLazy, 114 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...