./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2aa33a4d599a5d6897f5617ce765d9180019e00 ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:41,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:41,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:41,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:41,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:41,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:41,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:41,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:41,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:41,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:41,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:41,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:41,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:41,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:41,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:41,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:41,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:41,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:41,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:41,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:41,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:41,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:41,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:41,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:41,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:41,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:41,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:41,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:41,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:41,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:41,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:41,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:41,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:41,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:41,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:41,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:41,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:41,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:41,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:41,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:41,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:41,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:21:41,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:41,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:41,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:41,181 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:41,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:41,181 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:41,182 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:41,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:21:41,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:21:41,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:41,184 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:41,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:21:41,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:41,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:41,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:41,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:41,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:41,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:41,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:41,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:41,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:41,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:41,187 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:41,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:41,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:41,187 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan 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 -> Taipan 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 -> a2aa33a4d599a5d6897f5617ce765d9180019e00 [2019-10-22 11:21:41,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:41,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:41,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:41,237 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:41,242 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:41,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-10-22 11:21:41,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/data/8bf486d67/433f6350dad24111bcf3a3637f12402d/FLAG05d1b4e16 [2019-10-22 11:21:41,809 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:41,810 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-10-22 11:21:41,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/data/8bf486d67/433f6350dad24111bcf3a3637f12402d/FLAG05d1b4e16 [2019-10-22 11:21:42,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/data/8bf486d67/433f6350dad24111bcf3a3637f12402d [2019-10-22 11:21:42,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:42,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:42,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:42,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:42,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:42,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f49becc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42, skipping insertion in model container [2019-10-22 11:21:42,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,086 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:42,138 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:42,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:42,657 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:42,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:42,791 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:42,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42 WrapperNode [2019-10-22 11:21:42,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:42,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:42,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:42,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:42,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:42,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:42,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:42,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:42,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... [2019-10-22 11:21:42,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:42,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:42,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:42,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:42,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:21:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 11:21:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:43,101 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:43,102 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 11:21:43,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:43 BoogieIcfgContainer [2019-10-22 11:21:43,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:43,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:43,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:43,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:43,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:42" (1/3) ... [2019-10-22 11:21:43,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b429aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:43, skipping insertion in model container [2019-10-22 11:21:43,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:42" (2/3) ... [2019-10-22 11:21:43,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b429aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:43, skipping insertion in model container [2019-10-22 11:21:43,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:43" (3/3) ... [2019-10-22 11:21:43,111 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2019-10-22 11:21:43,121 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:43,133 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:21:43,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:21:43,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:43,173 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:21:43,173 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:43,173 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:43,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:43,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:43,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:43,174 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-22 11:21:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:43,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,204 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:43,206 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:21:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash 889509194, now seen corresponding path program 1 times [2019-10-22 11:21:43,223 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:43,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176986805] [2019-10-22 11:21:43,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:43,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176986805] [2019-10-22 11:21:43,395 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:43,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:43,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125708325] [2019-10-22 11:21:43,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:43,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:43,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:43,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:43,416 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-10-22 11:21:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:43,491 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2019-10-22 11:21:43,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:43,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 11:21:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:43,501 INFO L225 Difference]: With dead ends: 53 [2019-10-22 11:21:43,501 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:21:43,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:21:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 17. [2019-10-22 11:21:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:21:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 11:21:43,540 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2019-10-22 11:21:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:43,540 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 11:21:43,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 11:21:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:43,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,541 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:43,541 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:21:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash 889568776, now seen corresponding path program 1 times [2019-10-22 11:21:43,542 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:43,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321038029] [2019-10-22 11:21:43,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:43,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321038029] [2019-10-22 11:21:43,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:43,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:43,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976016675] [2019-10-22 11:21:43,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:43,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,574 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-10-22 11:21:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:43,599 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-10-22 11:21:43,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:43,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:21:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:43,600 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:21:43,600 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 11:21:43,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 11:21:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2019-10-22 11:21:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 11:21:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-22 11:21:43,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2019-10-22 11:21:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:43,604 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-22 11:21:43,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-22 11:21:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:21:43,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,605 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:43,606 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:21:43,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,606 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2019-10-22 11:21:43,606 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:43,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238431504] [2019-10-22 11:21:43,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:43,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238431504] [2019-10-22 11:21:43,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:43,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:43,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346458626] [2019-10-22 11:21:43,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:43,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:43,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:43,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:43,679 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-10-22 11:21:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:43,730 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-10-22 11:21:43,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:43,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 11:21:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:43,732 INFO L225 Difference]: With dead ends: 14 [2019-10-22 11:21:43,732 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:21:43,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:21:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:21:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:21:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-22 11:21:43,735 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2019-10-22 11:21:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:43,735 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-22 11:21:43,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-22 11:21:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:21:43,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,736 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:43,736 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:21:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,736 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2019-10-22 11:21:43,737 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:43,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227697627] [2019-10-22 11:21:43,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:43,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:43,797 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:43,797 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:43,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:43 BoogieIcfgContainer [2019-10-22 11:21:43,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:43,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:43,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:43,817 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:43,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:43" (3/4) ... [2019-10-22 11:21:43,820 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:43,860 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a68cce44-1337-405e-a644-4c83ff2be7c7/bin/utaipan/witness.graphml [2019-10-22 11:21:43,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:43,862 INFO L168 Benchmark]: Toolchain (without parser) took 1793.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 934.3 MB in the beginning and 1.0 GB in the end (delta: -100.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:43,862 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:43,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:43,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.91 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:43,863 INFO L168 Benchmark]: Boogie Preprocessor took 22.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:43,865 INFO L168 Benchmark]: RCFGBuilder took 240.15 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:43,865 INFO L168 Benchmark]: TraceAbstraction took 712.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:43,866 INFO L168 Benchmark]: Witness Printer took 43.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:43,870 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 723.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.91 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.86 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. * RCFGBuilder took 240.15 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 712.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L570] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L527] COND TRUE __VERIFIER_nondet_int() [L528] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L759] int *p = (int *)ldv_malloc(sizeof(int)); [L760] COND TRUE \read(*p) [L527] COND FALSE !(__VERIFIER_nondet_int()) [L530] return 0; VAL [ldv_global_msg_list={3:0}] [L761] int *q = (int *)ldv_malloc(sizeof(int)); [L762] free(q) VAL [ldv_global_msg_list={3:0}] [L762] free(q) VAL [ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 55 SDslu, 53 SDs, 0 SdLazy, 33 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...