./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dfe6e301265e265404ce5be2c9f54235040b69e ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:59,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:59,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:59,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:59,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:59,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:59,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:59,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:59,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:59,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:59,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:59,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:59,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:59,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:59,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:59,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:59,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:59,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:59,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:59,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:59,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:59,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:59,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:59,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:59,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:59,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:59,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:59,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:59,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:59,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:59,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:59,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:59,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:59,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:59,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:59,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:59,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:59,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:59,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:59,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:59,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:59,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2020-11-28 07:38:59,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:59,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:59,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:59,320 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:59,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:59,321 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:59,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:59,321 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:59,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:59,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:59,323 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:59,323 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:59,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:59,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:59,324 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:59,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:38:59,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:38:59,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:59,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:59,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:38:59,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:59,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:59,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:59,326 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:38:59,326 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:38:59,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:59,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:59,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:59,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:59,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:59,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:59,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:59,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:59,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:59,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:59,330 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:59,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:59,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:59,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:59,331 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dfe6e301265e265404ce5be2c9f54235040b69e [2020-11-28 07:38:59,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:59,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:59,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:59,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:59,626 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:59,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2020-11-28 07:38:59,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/data/c33e8a263/184279b2b1924293a29937818ab99e73/FLAG3b8e85cc7 [2020-11-28 07:39:00,257 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:00,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/sv-benchmarks/c/list-ext-properties/simple-ext.i [2020-11-28 07:39:00,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/data/c33e8a263/184279b2b1924293a29937818ab99e73/FLAG3b8e85cc7 [2020-11-28 07:39:00,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/data/c33e8a263/184279b2b1924293a29937818ab99e73 [2020-11-28 07:39:00,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:00,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:00,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:00,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:00,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:00,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:00" (1/1) ... [2020-11-28 07:39:00,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6680c23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:00, skipping insertion in model container [2020-11-28 07:39:00,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:00" (1/1) ... [2020-11-28 07:39:00,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:00,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:01,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:01,047 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:01,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:01,157 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:01,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01 WrapperNode [2020-11-28 07:39:01,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:01,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:01,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:01,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:01,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:01,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:01,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:01,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:01,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... [2020-11-28 07:39:01,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:01,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:01,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:01,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:01,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/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 [2020-11-28 07:39:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 07:39:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:39:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:39:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:01,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:02,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:02,014 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:39:02,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:02 BoogieIcfgContainer [2020-11-28 07:39:02,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:02,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:02,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:02,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:02,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:00" (1/3) ... [2020-11-28 07:39:02,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b8153f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:02, skipping insertion in model container [2020-11-28 07:39:02,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:01" (2/3) ... [2020-11-28 07:39:02,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b8153f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:02, skipping insertion in model container [2020-11-28 07:39:02,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:02" (3/3) ... [2020-11-28 07:39:02,028 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2020-11-28 07:39:02,042 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:02,047 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-11-28 07:39:02,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-11-28 07:39:02,088 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:02,088 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:39:02,088 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:02,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:02,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:02,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:02,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:02,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:02,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-11-28 07:39:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:39:02,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:02,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:39:02,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-11-28 07:39:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash 4675779, now seen corresponding path program 1 times [2020-11-28 07:39:02,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:02,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466776278] [2020-11-28 07:39:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:02,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466776278] [2020-11-28 07:39:02,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:02,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:02,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100778819] [2020-11-28 07:39:02,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:39:02,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:02,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:39:02,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:02,268 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-11-28 07:39:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:02,281 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-11-28 07:39:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:39:02,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-28 07:39:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:02,290 INFO L225 Difference]: With dead ends: 46 [2020-11-28 07:39:02,290 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:39:02,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:39:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-28 07:39:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 07:39:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-11-28 07:39:02,323 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 4 [2020-11-28 07:39:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:02,323 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-11-28 07:39:02,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:39:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-11-28 07:39:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:39:02,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:02,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:39:02,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:39:02,325 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-11-28 07:39:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash 145032030, now seen corresponding path program 1 times [2020-11-28 07:39:02,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:02,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100638926] [2020-11-28 07:39:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:02,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100638926] [2020-11-28 07:39:02,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:02,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:02,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787243958] [2020-11-28 07:39:02,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:02,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:02,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:02,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:02,407 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2020-11-28 07:39:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:02,589 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-28 07:39:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:39:02,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:39:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:02,591 INFO L225 Difference]: With dead ends: 57 [2020-11-28 07:39:02,591 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 07:39:02,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:39:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 07:39:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-28 07:39:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 07:39:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-11-28 07:39:02,601 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 5 [2020-11-28 07:39:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:02,601 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-11-28 07:39:02,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-11-28 07:39:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:39:02,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:02,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:39:02,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:39:02,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-11-28 07:39:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash 145032031, now seen corresponding path program 1 times [2020-11-28 07:39:02,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:02,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557689913] [2020-11-28 07:39:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:02,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557689913] [2020-11-28 07:39:02,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:02,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:02,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406202806] [2020-11-28 07:39:02,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:02,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:02,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:02,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:02,728 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 4 states. [2020-11-28 07:39:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:02,915 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-28 07:39:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:39:02,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:39:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:02,917 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:39:02,917 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 07:39:02,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:39:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 07:39:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-11-28 07:39:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 07:39:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-28 07:39:02,927 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 5 [2020-11-28 07:39:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:02,927 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-28 07:39:02,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-28 07:39:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:39:02,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:02,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:02,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:39:02,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-11-28 07:39:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1573241998, now seen corresponding path program 1 times [2020-11-28 07:39:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326930632] [2020-11-28 07:39:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:03,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326930632] [2020-11-28 07:39:03,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:03,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:39:03,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083789980] [2020-11-28 07:39:03,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:03,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:03,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:03,031 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2020-11-28 07:39:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:03,138 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-11-28 07:39:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:39:03,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 07:39:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:03,142 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:39:03,142 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:39:03,143 INFO L677 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 [2020-11-28 07:39:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:39:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-11-28 07:39:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 07:39:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-11-28 07:39:03,155 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 9 [2020-11-28 07:39:03,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:03,155 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-11-28 07:39:03,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-11-28 07:39:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:39:03,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:03,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:03,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:39:03,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-11-28 07:39:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash -7828738, now seen corresponding path program 1 times [2020-11-28 07:39:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:03,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23076211] [2020-11-28 07:39:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:03,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:03,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:03,265 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:39:03,265 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:39:03,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:39:03,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:03 BoogieIcfgContainer [2020-11-28 07:39:03,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:03,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:03,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:03,290 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:03,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:02" (3/4) ... [2020-11-28 07:39:03,293 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:39:03,332 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29e1d878-1a2c-4ee7-86de-400ca4a90f48/bin/utaipan/witness.graphml [2020-11-28 07:39:03,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:03,334 INFO L168 Benchmark]: Toolchain (without parser) took 2749.10 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 81.6 MB in the beginning and 99.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,335 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:03,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.09 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 71.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 69.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,337 INFO L168 Benchmark]: Boogie Preprocessor took 30.51 ms. Allocated memory is still 107.0 MB. Free memory was 69.5 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:03,338 INFO L168 Benchmark]: RCFGBuilder took 779.02 ms. Allocated memory is still 107.0 MB. Free memory was 68.0 MB in the beginning and 68.6 MB in the end (delta: -691.8 kB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,338 INFO L168 Benchmark]: TraceAbstraction took 1271.32 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.6 MB in the beginning and 101.9 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:03,339 INFO L168 Benchmark]: Witness Printer took 42.54 ms. Allocated memory is still 130.0 MB. Free memory was 101.9 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:03,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 570.09 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 71.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 69.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.51 ms. Allocated memory is still 107.0 MB. Free memory was 69.5 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 779.02 ms. Allocated memory is still 107.0 MB. Free memory was 68.0 MB in the beginning and 68.6 MB in the end (delta: -691.8 kB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1271.32 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.6 MB in the beginning and 101.9 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.54 ms. Allocated memory is still 130.0 MB. Free memory was 101.9 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] int i = 0; [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i [L546] p->n = 0 [L547] p = a [L548] i = 0 [L549] COND TRUE p!=0 [L550] EXPR p->h [L550] COND TRUE p->h != 1 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "simple-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 214 SDslu, 28 SDs, 0 SdLazy, 144 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=3, 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, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...