./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/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 3aee1e8d9b723b18f218b6c1185554e637930c5d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 15:40:45,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:40:45,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:40:45,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:40:45,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:40:45,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:40:45,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:40:45,902 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:40:45,903 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:40:45,904 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:40:45,904 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:40:45,905 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:40:45,905 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:40:45,906 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:40:45,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:40:45,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:40:45,908 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:40:45,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:40:45,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:40:45,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:40:45,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:40:45,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:40:45,915 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:40:45,916 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:40:45,916 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:40:45,916 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:40:45,917 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:40:45,918 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:40:45,918 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:40:45,919 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:40:45,919 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:40:45,920 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:40:45,920 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:40:45,920 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:40:45,921 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:40:45,921 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:40:45,922 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 15:40:45,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:40:45,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:40:45,933 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:40:45,933 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 15:40:45,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:40:45,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:40:45,934 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:40:45,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:40:45,935 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:40:45,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:40:45,935 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:40:45,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:40:45,935 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:40:45,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:40:45,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:40:45,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:40:45,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:40:45,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:40:45,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:40:45,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:40:45,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:40:45,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:40:45,938 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:40:45,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:40:45,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:40:45,938 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_78647983-1307-4c43-aaa6-9c4b8d55567c/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 -> 3aee1e8d9b723b18f218b6c1185554e637930c5d [2018-11-18 15:40:45,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:40:45,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:40:45,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:40:45,980 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:40:45,981 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:40:45,981 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-18 15:40:46,039 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2/FLAGf1a42e448 [2018-11-18 15:40:46,439 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:40:46,439 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-18 15:40:46,451 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2/FLAGf1a42e448 [2018-11-18 15:40:46,463 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2 [2018-11-18 15:40:46,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:40:46,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 15:40:46,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:40:46,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:40:46,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:40:46,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44021729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46, skipping insertion in model container [2018-11-18 15:40:46,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:40:46,513 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:40:46,721 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:40:46,728 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:40:46,763 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:40:46,854 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:40:46,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46 WrapperNode [2018-11-18 15:40:46,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:40:46,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:40:46,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:40:46,855 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:40:46,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... [2018-11-18 15:40:46,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:40:46,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:40:46,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:40:46,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:40:46,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/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 [2018-11-18 15:40:46,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:40:46,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:40:46,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:40:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 15:40:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 15:40:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 15:40:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 15:40:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 15:40:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 15:40:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 15:40:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 15:40:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 15:40:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 15:40:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 15:40:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 15:40:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 15:40:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 15:40:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:40:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 15:40:47,225 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:40:47,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47 BoogieIcfgContainer [2018-11-18 15:40:47,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:40:47,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:40:47,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:40:47,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:40:47,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:40:46" (1/3) ... [2018-11-18 15:40:47,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432803b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:40:47, skipping insertion in model container [2018-11-18 15:40:47,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (2/3) ... [2018-11-18 15:40:47,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432803b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:40:47, skipping insertion in model container [2018-11-18 15:40:47,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47" (3/3) ... [2018-11-18 15:40:47,231 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-18 15:40:47,239 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:40:47,245 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 15:40:47,257 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 15:40:47,278 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:40:47,279 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:40:47,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:40:47,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:40:47,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:40:47,279 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:40:47,279 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:40:47,279 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:40:47,280 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:40:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-18 15:40:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 15:40:47,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:47,296 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:40:47,298 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:47,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2120402635, now seen corresponding path program 1 times [2018-11-18 15:40:47,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:47,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:47,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:47,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:47,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:40:47,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:40:47,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:40:47,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:40:47,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:40:47,444 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-11-18 15:40:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:40:47,460 INFO L93 Difference]: Finished difference Result 66 states and 97 transitions. [2018-11-18 15:40:47,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:40:47,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 15:40:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:40:47,470 INFO L225 Difference]: With dead ends: 66 [2018-11-18 15:40:47,470 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 15:40:47,474 INFO L604 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 [2018-11-18 15:40:47,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 15:40:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 15:40:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 15:40:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-11-18 15:40:47,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2018-11-18 15:40:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:40:47,505 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-11-18 15:40:47,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:40:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-11-18 15:40:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 15:40:47,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:47,506 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:40:47,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:47,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1530455017, now seen corresponding path program 1 times [2018-11-18 15:40:47,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:47,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:47,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:47,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:47,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:40:47,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:40:47,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 15:40:47,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:40:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:40:47,583 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2018-11-18 15:40:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:40:47,646 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-11-18 15:40:47,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:40:47,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 15:40:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:40:47,647 INFO L225 Difference]: With dead ends: 39 [2018-11-18 15:40:47,647 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 15:40:47,648 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:40:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 15:40:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-11-18 15:40:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 15:40:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-11-18 15:40:47,653 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-11-18 15:40:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:40:47,653 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-11-18 15:40:47,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 15:40:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-11-18 15:40:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 15:40:47,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:47,654 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:40:47,655 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:47,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1583454493, now seen corresponding path program 1 times [2018-11-18 15:40:47,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:47,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:47,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:47,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:47,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:40:47,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:40:47,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:40:47,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:40:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:40:47,793 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-11-18 15:40:47,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:40:47,880 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-11-18 15:40:47,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:40:47,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-18 15:40:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:40:47,881 INFO L225 Difference]: With dead ends: 59 [2018-11-18 15:40:47,881 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 15:40:47,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 15:40:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 15:40:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2018-11-18 15:40:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 15:40:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-11-18 15:40:47,887 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16 [2018-11-18 15:40:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:40:47,887 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-11-18 15:40:47,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:40:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-11-18 15:40:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 15:40:47,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:47,888 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:40:47,888 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:47,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2124632458, now seen corresponding path program 1 times [2018-11-18 15:40:47,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:47,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:47,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:47,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:48,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:40:48,057 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:40:48,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:48,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:40:48,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 15:40:48,131 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,151 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 15:40:48,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 15:40:48,157 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,159 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,170 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,170 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:23, output treesize:18 [2018-11-18 15:40:48,178 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:40:48,178 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:40:48,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-11-18 15:40:48,180 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,187 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,187 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2018-11-18 15:40:48,220 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:40:48,222 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:40:48,223 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 15:40:48,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-18 15:40:48,224 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2018-11-18 15:40:48,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 15:40:48,241 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,255 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2018-11-18 15:40:48,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 15:40:48,257 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,265 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,269 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,286 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-11-18 15:40:48,287 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:65, output treesize:43 [2018-11-18 15:40:48,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 15:40:48,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-18 15:40:48,357 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,368 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-11-18 15:40:48,368 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-11-18 15:40:48,375 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,377 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,388 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:40:48,389 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2018-11-18 15:40:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:48,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:40:48,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-11-18 15:40:48,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 15:40:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 15:40:48,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 15:40:48,416 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 10 states. [2018-11-18 15:40:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:40:48,685 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2018-11-18 15:40:48,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 15:40:48,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-18 15:40:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:40:48,686 INFO L225 Difference]: With dead ends: 80 [2018-11-18 15:40:48,686 INFO L226 Difference]: Without dead ends: 78 [2018-11-18 15:40:48,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-11-18 15:40:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-18 15:40:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 26. [2018-11-18 15:40:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 15:40:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-18 15:40:48,691 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20 [2018-11-18 15:40:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:40:48,691 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-18 15:40:48,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 15:40:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 15:40:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:40:48,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:48,692 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] [2018-11-18 15:40:48,693 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:48,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1683545549, now seen corresponding path program 1 times [2018-11-18 15:40:48,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:48,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:48,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:48,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:48,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:40:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:40:48,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:40:48,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:40:48,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:40:48,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:40:48,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:40:48,777 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-18 15:40:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:40:48,822 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2018-11-18 15:40:48,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:40:48,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 15:40:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:40:48,823 INFO L225 Difference]: With dead ends: 44 [2018-11-18 15:40:48,823 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 15:40:48,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:40:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 15:40:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2018-11-18 15:40:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 15:40:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 15:40:48,828 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2018-11-18 15:40:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:40:48,828 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 15:40:48,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:40:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-11-18 15:40:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:40:48,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:40:48,829 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] [2018-11-18 15:40:48,829 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:40:48,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:40:48,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1683485967, now seen corresponding path program 1 times [2018-11-18 15:40:48,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:40:48,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:40:48,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:48,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:40:48,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:40:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:40:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:40:48,856 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 15:40:48,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:40:48 BoogieIcfgContainer [2018-11-18 15:40:48,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:40:48,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:40:48,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:40:48,878 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:40:48,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47" (3/4) ... [2018-11-18 15:40:48,880 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 15:40:48,911 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/witness.graphml [2018-11-18 15:40:48,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:40:48,912 INFO L168 Benchmark]: Toolchain (without parser) took 2445.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 872.4 MB in the end (delta: 84.1 MB). Peak memory consumption was 228.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:40:48,913 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:40:48,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2018-11-18 15:40:48,913 INFO L168 Benchmark]: Boogie Preprocessor took 42.19 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:40:48,914 INFO L168 Benchmark]: RCFGBuilder took 328.27 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. [2018-11-18 15:40:48,914 INFO L168 Benchmark]: TraceAbstraction took 1651.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.4 MB in the end (delta: 202.1 MB). Peak memory consumption was 202.1 MB. Max. memory is 11.5 GB. [2018-11-18 15:40:48,915 INFO L168 Benchmark]: Witness Printer took 33.65 ms. Allocated memory is still 1.2 GB. Free memory is still 872.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:40:48,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 387.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.19 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 328.27 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1651.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.4 MB in the end (delta: 202.1 MB). Peak memory consumption was 202.1 MB. Max. memory is 11.5 GB. * Witness Printer took 33.65 ms. Allocated memory is still 1.2 GB. Free memory is still 872.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] EXPR, FCALL malloc(sizeof(SLL)) [L995] SLL* list = malloc(sizeof(SLL)); [L996] FCALL list->next = ((void*)0) [L997] FCALL list->colour = BLACK [L999] SLL* end = list; VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) [L1028] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1030] COND TRUE ((void*)0) != end [L1032] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR, FCALL end->next VAL [end={10:0}, end->next={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. UNSAFE Result, 1.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 151 SDslu, 318 SDs, 0 SdLazy, 229 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 86 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 8 QuantifiedInterpolants, 15401 SizeOfPredicates, 12 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...