./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f270b702de634d3ad2ee5a400388c6410a4cf10 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 13:15:18,311 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:15:18,312 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:15:18,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:15:18,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:15:18,319 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:15:18,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:15:18,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:15:18,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:15:18,323 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:15:18,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:15:18,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:15:18,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:15:18,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:15:18,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:15:18,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:15:18,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:15:18,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:15:18,328 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:15:18,329 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:15:18,330 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:15:18,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:15:18,332 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:15:18,332 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:15:18,333 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:15:18,333 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:15:18,334 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:15:18,334 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:15:18,334 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:15:18,335 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:15:18,335 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:15:18,336 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:15:18,336 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:15:18,336 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:15:18,337 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:15:18,337 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:15:18,338 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 13:15:18,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:15:18,345 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:15:18,345 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:15:18,346 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 13:15:18,346 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 13:15:18,346 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 13:15:18,346 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 13:15:18,346 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:15:18,347 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:15:18,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:15:18,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:15:18,349 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:15:18,349 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2018-11-10 13:15:18,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:15:18,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:15:18,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:15:18,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:15:18,384 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:15:18,384 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 13:15:18,422 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/data/bf641a58b/62f4d93f72fe4504b0c0c6c3b9928d90/FLAG1730f478a [2018-11-10 13:15:18,849 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:15:18,849 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 13:15:18,858 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/data/bf641a58b/62f4d93f72fe4504b0c0c6c3b9928d90/FLAG1730f478a [2018-11-10 13:15:18,867 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/data/bf641a58b/62f4d93f72fe4504b0c0c6c3b9928d90 [2018-11-10 13:15:18,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:15:18,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 13:15:18,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:15:18,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:15:18,873 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:15:18,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:15:18" (1/1) ... [2018-11-10 13:15:18,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb6dcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:18, skipping insertion in model container [2018-11-10 13:15:18,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:15:18" (1/1) ... [2018-11-10 13:15:18,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:15:18,908 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:15:19,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:15:19,089 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:15:19,121 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:15:19,143 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:15:19,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19 WrapperNode [2018-11-10 13:15:19,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:15:19,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:15:19,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:15:19,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:15:19,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... [2018-11-10 13:15:19,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:15:19,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:15:19,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:15:19,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:15:19,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/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 [2018-11-10 13:15:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:15:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:15:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:15:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 13:15:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 13:15:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 13:15:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 13:15:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 13:15:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 13:15:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 13:15:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 13:15:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 13:15:19,261 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 13:15:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 13:15:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 13:15:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 13:15:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 13:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 13:15:19,633 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:15:19,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:19 BoogieIcfgContainer [2018-11-10 13:15:19,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:15:19,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:15:19,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:15:19,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:15:19,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:15:18" (1/3) ... [2018-11-10 13:15:19,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a30b6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:15:19, skipping insertion in model container [2018-11-10 13:15:19,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:19" (2/3) ... [2018-11-10 13:15:19,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a30b6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:15:19, skipping insertion in model container [2018-11-10 13:15:19,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:19" (3/3) ... [2018-11-10 13:15:19,638 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 13:15:19,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:15:19,650 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-10 13:15:19,660 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-10 13:15:19,679 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 13:15:19,680 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:15:19,680 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:15:19,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:15:19,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:15:19,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:15:19,680 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:15:19,681 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:15:19,681 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:15:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-11-10 13:15:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 13:15:19,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:19,698 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:15:19,700 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:19,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1976293479, now seen corresponding path program 1 times [2018-11-10 13:15:19,705 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:19,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:19,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:19,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:19,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:15:19,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:19,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 13:15:19,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 13:15:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 13:15:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 13:15:19,812 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2018-11-10 13:15:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:19,830 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2018-11-10 13:15:19,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 13:15:19,831 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-10 13:15:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:19,838 INFO L225 Difference]: With dead ends: 129 [2018-11-10 13:15:19,838 INFO L226 Difference]: Without dead ends: 63 [2018-11-10 13:15:19,840 INFO L605 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 [2018-11-10 13:15:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-10 13:15:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-10 13:15:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 13:15:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2018-11-10 13:15:19,867 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 16 [2018-11-10 13:15:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:19,867 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2018-11-10 13:15:19,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 13:15:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2018-11-10 13:15:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 13:15:19,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:19,868 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:15:19,868 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:19,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1190846937, now seen corresponding path program 1 times [2018-11-10 13:15:19,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:19,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:19,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:19,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:19,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:15:19,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:19,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 13:15:19,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:15:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:15:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:15:19,958 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 5 states. [2018-11-10 13:15:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:20,041 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2018-11-10 13:15:20,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 13:15:20,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-10 13:15:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:20,043 INFO L225 Difference]: With dead ends: 88 [2018-11-10 13:15:20,043 INFO L226 Difference]: Without dead ends: 86 [2018-11-10 13:15:20,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-10 13:15:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-10 13:15:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2018-11-10 13:15:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 13:15:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2018-11-10 13:15:20,047 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 18 [2018-11-10 13:15:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:20,048 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2018-11-10 13:15:20,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:15:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2018-11-10 13:15:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 13:15:20,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:20,048 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:15:20,049 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:20,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1589843884, now seen corresponding path program 1 times [2018-11-10 13:15:20,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:20,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:20,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:20,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:20,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:15:20,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:20,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 13:15:20,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 13:15:20,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 13:15:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 13:15:20,175 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 7 states. [2018-11-10 13:15:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:20,342 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2018-11-10 13:15:20,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 13:15:20,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-10 13:15:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:20,344 INFO L225 Difference]: With dead ends: 116 [2018-11-10 13:15:20,344 INFO L226 Difference]: Without dead ends: 114 [2018-11-10 13:15:20,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-10 13:15:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-10 13:15:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 82. [2018-11-10 13:15:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-10 13:15:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2018-11-10 13:15:20,353 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 22 [2018-11-10 13:15:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:20,354 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2018-11-10 13:15:20,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 13:15:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2018-11-10 13:15:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 13:15:20,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:20,355 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:15:20,355 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:20,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 878036960, now seen corresponding path program 1 times [2018-11-10 13:15:20,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:20,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:20,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:15:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:15:20,394 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 13:15:20,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:15:20 BoogieIcfgContainer [2018-11-10 13:15:20,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:15:20,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:15:20,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:15:20,416 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:15:20,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:19" (3/4) ... [2018-11-10 13:15:20,418 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 13:15:20,444 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f94b5832-42fd-4c5a-acd6-8d747188023a/bin-2019/uautomizer/witness.graphml [2018-11-10 13:15:20,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:15:20,445 INFO L168 Benchmark]: Toolchain (without parser) took 1575.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 958.0 MB in the beginning and 1.0 GB in the end (delta: -56.2 MB). Peak memory consumption was 104.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:20,446 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:15:20,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.68 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 935.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:20,446 INFO L168 Benchmark]: Boogie Preprocessor took 78.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 935.5 MB in the beginning and 1.2 GB in the end (delta: -216.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:20,447 INFO L168 Benchmark]: RCFGBuilder took 410.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:20,447 INFO L168 Benchmark]: TraceAbstraction took 782.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:20,448 INFO L168 Benchmark]: Witness Printer took 28.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:15:20,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.68 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 935.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 935.5 MB in the beginning and 1.2 GB in the end (delta: -216.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 410.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 782.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 11.5 GB. * Witness Printer took 28.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={14:0}] [L994] SLL* list = malloc(sizeof(SLL)); VAL [list={14:0}, malloc(sizeof(SLL))={14:0}] [L995] FCALL list->next = ((void*)0) VAL [list={14:0}, malloc(sizeof(SLL))={14:0}] [L996] FCALL list->prev = ((void*)0) VAL [list={14:0}, malloc(sizeof(SLL))={14:0}] [L997] FCALL list->colour = BLACK VAL [list={14:0}, malloc(sizeof(SLL))={14:0}] [L999] SLL* end = list; VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1029] COND FALSE !(!(((void*)0) != end)) VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1029] COND FALSE !(0) VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1030] EXPR, FCALL end->colour VAL [end={14:0}, end->colour=1, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1030] COND FALSE !(!(BLACK == end->colour)) [L1030] COND FALSE !(0) VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1032] COND TRUE ((void*)0) != end VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1034] EXPR, FCALL end->colour VAL [end={14:0}, end->colour=1, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR, FCALL end->next VAL [end={14:0}, end->next={0:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() VAL [end={14:0}, list={14:0}, malloc(sizeof(SLL))={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 3 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 178 SDtfs, 490 SDslu, 159 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 3 MinimizatonAttempts, 57 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 3826 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...