./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.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_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/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 f9e4b987fddd5be88447132dcb5136b5a374e8f5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:24:43,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:43,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:43,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:43,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:43,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:43,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:43,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:43,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:43,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:43,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:43,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:43,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:43,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:43,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:43,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:43,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:43,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:43,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:43,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:43,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:43,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:43,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:43,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:43,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:43,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:43,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:43,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:43,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:43,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:43,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:43,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:43,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:43,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:43,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:43,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:43,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:43,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:43,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:43,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:43,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:43,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-10-22 11:24:43,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:43,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:43,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:43,160 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:43,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:43,160 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:43,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:43,161 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:43,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:43,161 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:43,162 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:43,162 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:43,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 11:24:43,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 11:24:43,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:43,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:43,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:24:43,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:43,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:43,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:43,164 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 11:24:43,164 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 11:24:43,164 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 11:24:43,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:43,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:43,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:43,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:43,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:43,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:43,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:43,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:43,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:43,167 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:43,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:43,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:43,167 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_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/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 -> f9e4b987fddd5be88447132dcb5136b5a374e8f5 [2019-10-22 11:24:43,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:43,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:43,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:43,213 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:43,215 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:43,216 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2019-10-22 11:24:43,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/data/69557c10e/3c351cc581484a3787581bdeb4172a7e/FLAGac5538691 [2019-10-22 11:24:43,762 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:43,763 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2019-10-22 11:24:43,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/data/69557c10e/3c351cc581484a3787581bdeb4172a7e/FLAGac5538691 [2019-10-22 11:24:44,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/data/69557c10e/3c351cc581484a3787581bdeb4172a7e [2019-10-22 11:24:44,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:44,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:44,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:44,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:44,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:44,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334c694f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44, skipping insertion in model container [2019-10-22 11:24:44,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,280 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:44,320 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:44,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:44,759 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:44,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:44,875 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:44,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44 WrapperNode [2019-10-22 11:24:44,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:44,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:44,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:44,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:44,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:44,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:44,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:44,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:44,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:44,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:44,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:44,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:44,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/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 11:24:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:24:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 11:24:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:45,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:45,228 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:45,228 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 11:24:45,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:45 BoogieIcfgContainer [2019-10-22 11:24:45,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:45,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:45,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:45,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:45,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:44" (1/3) ... [2019-10-22 11:24:45,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2382aad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:45, skipping insertion in model container [2019-10-22 11:24:45,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (2/3) ... [2019-10-22 11:24:45,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2382aad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:45, skipping insertion in model container [2019-10-22 11:24:45,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:45" (3/3) ... [2019-10-22 11:24:45,241 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test16.i [2019-10-22 11:24:45,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:45,284 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:24:45,306 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:24:45,339 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:45,340 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 11:24:45,340 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:45,340 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:45,340 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:45,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:45,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:45,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-22 11:24:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:45,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,367 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,369 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,378 INFO L82 PathProgramCache]: Analyzing trace with hash 889783782, now seen corresponding path program 1 times [2019-10-22 11:24:45,387 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787111326] [2019-10-22 11:24:45,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,605 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 11:24:45,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787111326] [2019-10-22 11:24:45,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:45,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314794859] [2019-10-22 11:24:45,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:45,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:45,631 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-10-22 11:24:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,741 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-10-22 11:24:45,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:45,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 11:24:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,753 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:24:45,755 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 11:24:45,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 11:24:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-10-22 11:24:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:24:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 11:24:45,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2019-10-22 11:24:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,793 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 11:24:45,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 11:24:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:24:45,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,794 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,794 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash 889784041, now seen corresponding path program 1 times [2019-10-22 11:24:45,795 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910645554] [2019-10-22 11:24:45,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,841 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 11:24:45,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910645554] [2019-10-22 11:24:45,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:45,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931007074] [2019-10-22 11:24:45,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:45,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:45,844 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-10-22 11:24:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,870 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-22 11:24:45,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:45,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:24:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,872 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:24:45,872 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 11:24:45,873 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 11:24:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 11:24:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-10-22 11:24:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 11:24:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-22 11:24:45,876 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2019-10-22 11:24:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,876 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-22 11:24:45,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-22 11:24:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:24:45,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,877 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,877 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash 118460299, now seen corresponding path program 1 times [2019-10-22 11:24:45,879 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95934666] [2019-10-22 11:24:45,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,952 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 11:24:45,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95934666] [2019-10-22 11:24:45,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:45,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199061269] [2019-10-22 11:24:45,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:45,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:45,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:45,954 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2019-10-22 11:24:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,990 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-10-22 11:24:45,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:45,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:24:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,992 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:24:45,992 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:24:45,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:24:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 11:24:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:24:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 11:24:45,995 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2019-10-22 11:24:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,995 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 11:24:45,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 11:24:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:24:45,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,996 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,996 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash 118460558, now seen corresponding path program 1 times [2019-10-22 11:24:45,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451929586] [2019-10-22 11:24:45,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:46,102 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 11:24:46,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451929586] [2019-10-22 11:24:46,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:46,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:46,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452561178] [2019-10-22 11:24:46,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:46,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:46,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:46,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:46,104 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-10-22 11:24:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:46,227 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 11:24:46,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:46,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:24:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:46,230 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:24:46,230 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:24:46,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:24:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-10-22 11:24:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:24:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-22 11:24:46,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-10-22 11:24:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:46,232 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-22 11:24:46,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-22 11:24:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:46,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:46,233 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:46,236 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:46,236 INFO L82 PathProgramCache]: Analyzing trace with hash -622697974, now seen corresponding path program 1 times [2019-10-22 11:24:46,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:46,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687643159] [2019-10-22 11:24:46,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:46,320 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 11:24:46,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687643159] [2019-10-22 11:24:46,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:46,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:46,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597097834] [2019-10-22 11:24:46,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:46,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:46,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:46,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:46,322 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2019-10-22 11:24:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:46,410 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-10-22 11:24:46,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:46,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:24:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:46,411 INFO L225 Difference]: With dead ends: 23 [2019-10-22 11:24:46,411 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:24:46,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:24:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-10-22 11:24:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:24:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-22 11:24:46,415 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2019-10-22 11:24:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:46,415 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-22 11:24:46,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-22 11:24:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:46,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:46,416 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:46,416 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 11:24:46,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:46,417 INFO L82 PathProgramCache]: Analyzing trace with hash -565439672, now seen corresponding path program 1 times [2019-10-22 11:24:46,417 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:46,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738391539] [2019-10-22 11:24:46,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:46,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:46,462 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:24:46,462 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:46,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:46 BoogieIcfgContainer [2019-10-22 11:24:46,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:46,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:46,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:46,487 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:46,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:45" (3/4) ... [2019-10-22 11:24:46,490 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:24:46,537 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ba6d5661-9626-4d3f-9a97-8c4d6c75683e/bin/utaipan/witness.graphml [2019-10-22 11:24:46,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:46,539 INFO L168 Benchmark]: Toolchain (without parser) took 2274.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.2 MB in the beginning and 1.0 GB in the end (delta: -69.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:46,539 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:46,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:46,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.34 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 11:24:46,541 INFO L168 Benchmark]: Boogie Preprocessor took 20.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:46,541 INFO L168 Benchmark]: RCFGBuilder took 280.32 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 11:24:46,542 INFO L168 Benchmark]: TraceAbstraction took 1255.56 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: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:46,542 INFO L168 Benchmark]: Witness Printer took 50.52 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 11:24:46,544 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.34 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. * Boogie Preprocessor took 20.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 280.32 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 1255.56 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: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.52 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: 770]: 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={1:0}] [L774] int condition = __VERIFIER_nondet_int(); [L762] COND TRUE \read(condition) [L527] COND FALSE !(__VERIFIER_nondet_int()) [L530] return 0; VAL [ldv_global_msg_list={1:0}] [L763] struct A16 *p = (struct A16 *)ldv_malloc(sizeof(struct A16)); [L764] return p; VAL [ldv_global_msg_list={1:0}] [L775] struct A16 *p = alloc_16(condition); [L769] COND TRUE \read(condition) VAL [ldv_global_msg_list={1:0}] [L770] free(p) VAL [ldv_global_msg_list={1:0}] [L770] free(p) VAL [ldv_global_msg_list={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 122 SDslu, 71 SDs, 0 SdLazy, 58 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, 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, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...