./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158_false-valid-free.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158_false-valid-free.i -s /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/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 988613cde5038d59f240babca0a9fb7bbef562e6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-09 15:47:23,244 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:47:23,245 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:47:23,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:47:23,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:47:23,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:47:23,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:47:23,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:47:23,254 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:47:23,255 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:47:23,255 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:47:23,255 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:47:23,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:47:23,256 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:47:23,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:47:23,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:47:23,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:47:23,259 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:47:23,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:47:23,260 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:47:23,261 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:47:23,261 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:47:23,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:47:23,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:47:23,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:47:23,263 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:47:23,264 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:47:23,264 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:47:23,265 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:47:23,265 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:47:23,265 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:47:23,265 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:47:23,266 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:47:23,266 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:47:23,266 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:47:23,267 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:47:23,267 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 15:47:23,274 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:47:23,274 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:47:23,275 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 15:47:23,275 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 15:47:23,275 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 15:47:23,276 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 15:47:23,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:47:23,276 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:47:23,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 15:47:23,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:47:23,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:47:23,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:47:23,278 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 15:47:23,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:47:23,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 15:47:23,278 INFO L133 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_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/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 -> 988613cde5038d59f240babca0a9fb7bbef562e6 [2018-12-09 15:47:23,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:47:23,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:47:23,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:47:23,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:47:23,310 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:47:23,310 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/../../sv-benchmarks/c/memsafety/test-0158_false-valid-free.i [2018-12-09 15:47:23,356 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/data/d83d291a8/5fe5247705324be499e9bbb20a01a9b1/FLAGb5a929a88 [2018-12-09 15:47:23,703 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:47:23,704 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/sv-benchmarks/c/memsafety/test-0158_false-valid-free.i [2018-12-09 15:47:23,709 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/data/d83d291a8/5fe5247705324be499e9bbb20a01a9b1/FLAGb5a929a88 [2018-12-09 15:47:24,085 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/data/d83d291a8/5fe5247705324be499e9bbb20a01a9b1 [2018-12-09 15:47:24,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:47:24,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:47:24,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:47:24,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:47:24,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:47:24,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a29c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24, skipping insertion in model container [2018-12-09 15:47:24,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:47:24,123 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:47:24,295 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:47:24,298 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:47:24,361 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:47:24,402 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:47:24,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24 WrapperNode [2018-12-09 15:47:24,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:47:24,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:47:24,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:47:24,403 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:47:24,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:47:24,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:47:24,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:47:24,420 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:47:24,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... [2018-12-09 15:47:24,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:47:24,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:47:24,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:47:24,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:47:24,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/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 [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 15:47:24,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 15:47:24,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 15:47:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:47:24,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:47:24,594 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:47:24,594 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 15:47:24,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:24 BoogieIcfgContainer [2018-12-09 15:47:24,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:47:24,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 15:47:24,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 15:47:24,596 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 15:47:24,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:47:24" (1/3) ... [2018-12-09 15:47:24,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d926c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:24, skipping insertion in model container [2018-12-09 15:47:24,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:24" (2/3) ... [2018-12-09 15:47:24,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d926c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:24, skipping insertion in model container [2018-12-09 15:47:24,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:24" (3/3) ... [2018-12-09 15:47:24,598 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-free.i [2018-12-09 15:47:24,604 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 15:47:24,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-09 15:47:24,617 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-09 15:47:24,632 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 15:47:24,632 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 15:47:24,632 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 15:47:24,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:47:24,633 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:47:24,633 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 15:47:24,633 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:47:24,633 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 15:47:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-12-09 15:47:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 15:47:24,646 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:24,647 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:24,648 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:24,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:24,651 INFO L82 PathProgramCache]: Analyzing trace with hash 80096515, now seen corresponding path program 1 times [2018-12-09 15:47:24,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:24,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:24,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,682 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:47:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:47:24,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:47:24,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 15:47:24,744 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:47:24,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 15:47:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:47:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:47:24,756 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-12-09 15:47:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:47:24,795 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2018-12-09 15:47:24,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:47:24,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 15:47:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:47:24,801 INFO L225 Difference]: With dead ends: 30 [2018-12-09 15:47:24,802 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 15:47:24,803 INFO L631 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 [2018-12-09 15:47:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 15:47:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-09 15:47:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 15:47:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-12-09 15:47:24,823 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 7 [2018-12-09 15:47:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:47:24,823 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-12-09 15:47:24,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 15:47:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-12-09 15:47:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 15:47:24,824 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:24,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:24,824 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:24,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash 80096516, now seen corresponding path program 1 times [2018-12-09 15:47:24,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:24,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:24,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,826 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:47:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:47:24,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:47:24,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 15:47:24,864 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:47:24,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 15:47:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:47:24,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:47:24,865 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 3 states. [2018-12-09 15:47:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:47:24,882 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-12-09 15:47:24,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:47:24,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 15:47:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:47:24,883 INFO L225 Difference]: With dead ends: 22 [2018-12-09 15:47:24,883 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 15:47:24,884 INFO L631 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 [2018-12-09 15:47:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 15:47:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 15:47:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 15:47:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2018-12-09 15:47:24,886 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 7 [2018-12-09 15:47:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:47:24,887 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2018-12-09 15:47:24,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 15:47:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2018-12-09 15:47:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 15:47:24,887 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:24,887 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:24,888 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:24,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash -897012951, now seen corresponding path program 1 times [2018-12-09 15:47:24,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:24,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:24,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,889 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:47:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:47:24,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:47:24,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:47:24,941 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:47:24,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 15:47:24,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 15:47:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 15:47:24,941 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 5 states. [2018-12-09 15:47:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:47:24,974 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-12-09 15:47:24,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 15:47:24,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 15:47:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:47:24,975 INFO L225 Difference]: With dead ends: 21 [2018-12-09 15:47:24,975 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 15:47:24,975 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:47:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 15:47:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-09 15:47:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 15:47:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-12-09 15:47:24,977 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 13 [2018-12-09 15:47:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:47:24,977 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-12-09 15:47:24,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 15:47:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-12-09 15:47:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 15:47:24,977 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:24,977 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:24,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:24,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:24,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2037597650, now seen corresponding path program 1 times [2018-12-09 15:47:24,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:24,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:24,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:24,978 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:47:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:47:25,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:47:25,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:47:25,024 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:47:25,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 15:47:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 15:47:25,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 15:47:25,025 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 5 states. [2018-12-09 15:47:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:47:25,064 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2018-12-09 15:47:25,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 15:47:25,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 15:47:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:47:25,065 INFO L225 Difference]: With dead ends: 20 [2018-12-09 15:47:25,065 INFO L226 Difference]: Without dead ends: 20 [2018-12-09 15:47:25,065 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:47:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-09 15:47:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-09 15:47:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 15:47:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2018-12-09 15:47:25,066 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 14 [2018-12-09 15:47:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:47:25,067 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2018-12-09 15:47:25,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 15:47:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2018-12-09 15:47:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 15:47:25,067 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:25,067 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:25,067 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:25,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1258982347, now seen corresponding path program 1 times [2018-12-09 15:47:25,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:25,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:25,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:25,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:25,068 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:47:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:47:25,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:47:25,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 15:47:25,107 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:47:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 15:47:25,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 15:47:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 15:47:25,108 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2018-12-09 15:47:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:47:25,148 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-12-09 15:47:25,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:47:25,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-12-09 15:47:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:47:25,149 INFO L225 Difference]: With dead ends: 19 [2018-12-09 15:47:25,149 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 15:47:25,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-09 15:47:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 15:47:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-09 15:47:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-09 15:47:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-12-09 15:47:25,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 15 [2018-12-09 15:47:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:47:25,152 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-12-09 15:47:25,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 15:47:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-12-09 15:47:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 15:47:25,152 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:47:25,152 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:47:25,153 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2018-12-09 15:47:25,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:47:25,153 INFO L82 PathProgramCache]: Analyzing trace with hash 373747152, now seen corresponding path program 1 times [2018-12-09 15:47:25,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:47:25,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:25,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:47:25,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:47:25,154 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:47:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:47:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:47:25,187 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 15:47:25,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:47:25 BoogieIcfgContainer [2018-12-09 15:47:25,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 15:47:25,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:47:25,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:47:25,202 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:47:25,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:24" (3/4) ... [2018-12-09 15:47:25,204 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 15:47:25,228 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_28d3e93d-3393-4de5-ac0e-e53b5c80c4cc/bin-2019/utaipan/witness.graphml [2018-12-09 15:47:25,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:47:25,229 INFO L168 Benchmark]: Toolchain (without parser) took 1140.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 947.0 MB in the beginning and 990.5 MB in the end (delta: -43.5 MB). Peak memory consumption was 87.6 MB. Max. memory is 11.5 GB. [2018-12-09 15:47:25,230 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:47:25,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:47:25,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.48 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. [2018-12-09 15:47:25,230 INFO L168 Benchmark]: Boogie Preprocessor took 13.04 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. [2018-12-09 15:47:25,230 INFO L168 Benchmark]: RCFGBuilder took 160.84 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 15:47:25,231 INFO L168 Benchmark]: TraceAbstraction took 607.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.5 MB in the end (delta: 89.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:47:25,231 INFO L168 Benchmark]: Witness Printer took 26.07 ms. Allocated memory is still 1.2 GB. Free memory is still 990.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:47:25,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.48 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 13.04 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 160.84 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 607.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.5 MB in the end (delta: 89.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 11.5 GB. * Witness Printer took 26.07 ms. Allocated memory is still 1.2 GB. Free memory is still 990.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 755]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L742-L749] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L750] data.p0 = malloc(37U) VAL [data={40:0}, malloc(37U)={38:0}] [L751] data.str.p2 = &data VAL [data={40:0}, malloc(37U)={38:0}] [L752] EXPR data.p0 VAL [data={40:0}, data.p0={38:0}, malloc(37U)={38:0}] [L752] void *ptr = data.p0; [L753] data.str.c[1] = sizeof data.str.p1 VAL [data={40:0}, malloc(37U)={38:0}, ptr={38:0}] [L754] EXPR data.p0 VAL [data={40:0}, data.p0={38:0}, malloc(37U)={38:0}, ptr={38:0}] [L754] free(data.p0) VAL [data={40:0}, data.p0={38:0}, malloc(37U)={38:0}, ptr={38:0}] [L754] free(data.p0) [L755] free(ptr) VAL [data={40:0}, malloc(37U)={38:0}, ptr={38:0}] [L755] free(ptr) VAL [data={40:0}, malloc(37U)={38:0}, ptr={38:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 15 error locations. UNSAFE Result, 0.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 71 SDslu, 82 SDs, 0 SdLazy, 87 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 2866 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...