./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.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_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/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 323a368457db0fbf1a75769ccf65710269e3f40c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:45:10,842 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:45:10,843 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:45:10,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:45:10,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:45:10,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:45:10,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:45:10,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:45:10,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:45:10,854 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:45:10,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:45:10,855 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:45:10,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:45:10,856 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:45:10,857 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:45:10,858 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:45:10,858 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:45:10,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:45:10,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:45:10,862 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:45:10,862 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:45:10,863 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:45:10,865 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:45:10,865 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:45:10,865 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:45:10,866 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:45:10,867 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:45:10,867 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:45:10,868 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:45:10,868 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:45:10,868 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:45:10,869 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:45:10,869 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:45:10,869 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:45:10,870 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:45:10,870 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:45:10,870 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:45:10,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:45:10,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:45:10,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:45:10,881 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:45:10,882 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:45:10,882 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:45:10,882 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:45:10,883 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:45:10,884 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:45:10,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:45:10,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:45:10,885 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:45:10,885 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:45:10,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:45:10,885 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_bd729873-7f03-4a02-8957-44ba974dccbc/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 -> 323a368457db0fbf1a75769ccf65710269e3f40c [2018-11-18 08:45:10,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:45:10,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:45:10,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:45:10,924 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:45:10,924 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:45:10,925 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-11-18 08:45:10,969 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/data/2fc6e1093/9fff16bec3654211b02ff6f2c2b45d7d/FLAGafdc0195e [2018-11-18 08:45:11,405 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:45:11,405 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-11-18 08:45:11,411 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/data/2fc6e1093/9fff16bec3654211b02ff6f2c2b45d7d/FLAGafdc0195e [2018-11-18 08:45:11,423 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/data/2fc6e1093/9fff16bec3654211b02ff6f2c2b45d7d [2018-11-18 08:45:11,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:45:11,426 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:45:11,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:45:11,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:45:11,430 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:45:11,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ef59c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11, skipping insertion in model container [2018-11-18 08:45:11,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:45:11,472 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:45:11,679 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:45:11,686 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:45:11,763 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:45:11,798 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:45:11,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11 WrapperNode [2018-11-18 08:45:11,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:45:11,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:45:11,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:45:11,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:45:11,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... [2018-11-18 08:45:11,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:45:11,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:45:11,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:45:11,843 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:45:11,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/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 08:45:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:45:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:45:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 08:45:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 08:45:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:45:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:45:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 08:45:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 08:45:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 08:45:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 08:45:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 08:45:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 08:45:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 08:45:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 08:45:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 08:45:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 08:45:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 08:45:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 08:45:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2018-11-18 08:45:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:45:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:45:12,224 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:45:12,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:45:12 BoogieIcfgContainer [2018-11-18 08:45:12,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:45:12,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:45:12,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:45:12,236 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:45:12,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:45:11" (1/3) ... [2018-11-18 08:45:12,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f66deaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:45:12, skipping insertion in model container [2018-11-18 08:45:12,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:11" (2/3) ... [2018-11-18 08:45:12,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f66deaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:45:12, skipping insertion in model container [2018-11-18 08:45:12,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:45:12" (3/3) ... [2018-11-18 08:45:12,239 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl_false-unreach-call.i [2018-11-18 08:45:12,245 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:45:12,250 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:45:12,259 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:45:12,279 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:45:12,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:45:12,280 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:45:12,280 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:45:12,280 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:45:12,280 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:45:12,280 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:45:12,281 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:45:12,281 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:45:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-11-18 08:45:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 08:45:12,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:45:12,297 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:45:12,299 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:45:12,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:45:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash 840514556, now seen corresponding path program 1 times [2018-11-18 08:45:12,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:45:12,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:45:12,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:45:12,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:45:12,384 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 08:45:12,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:45:12,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:45:12,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:45:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:45:12,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:45:12,397 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-11-18 08:45:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:45:12,414 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2018-11-18 08:45:12,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:45:12,415 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-18 08:45:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:45:12,419 INFO L225 Difference]: With dead ends: 103 [2018-11-18 08:45:12,420 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 08:45:12,422 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 08:45:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 08:45:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 08:45:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 08:45:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-18 08:45:12,444 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-11-18 08:45:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:45:12,444 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-18 08:45:12,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:45:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-18 08:45:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 08:45:12,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:45:12,445 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:45:12,445 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:45:12,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:45:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2009858230, now seen corresponding path program 1 times [2018-11-18 08:45:12,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:45:12,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:45:12,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:45:12,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:45:12,514 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 08:45:12,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:45:12,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:45:12,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:45:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:45:12,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:45:12,517 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-11-18 08:45:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:45:12,586 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-18 08:45:12,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:45:12,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-18 08:45:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:45:12,587 INFO L225 Difference]: With dead ends: 38 [2018-11-18 08:45:12,587 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 08:45:12,588 INFO L604 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 [2018-11-18 08:45:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 08:45:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2018-11-18 08:45:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 08:45:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-18 08:45:12,592 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2018-11-18 08:45:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:45:12,593 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-18 08:45:12,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:45:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-18 08:45:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:45:12,593 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:45:12,593 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 08:45:12,594 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:45:12,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:45:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1294582226, now seen corresponding path program 1 times [2018-11-18 08:45:12,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:45:12,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:45:12,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:45:12,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:45:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:45:12,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:45:12,726 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/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 08:45:12,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:45:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:45:12,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:45:12,800 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 11 treesize of output 8 [2018-11-18 08:45:12,802 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 8 treesize of output 7 [2018-11-18 08:45:12,802 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,804 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,821 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 11 treesize of output 8 [2018-11-18 08:45:12,823 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 8 treesize of output 7 [2018-11-18 08:45:12,824 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,828 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,833 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,834 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-11-18 08:45:12,844 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 11 [2018-11-18 08:45:12,847 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 08:45:12,847 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,854 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 11 [2018-11-18 08:45:12,873 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 08:45:12,874 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,876 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,888 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 08:45:12,888 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-18 08:45:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:45:12,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:45:12,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 08:45:12,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 08:45:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 08:45:12,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:45:12,917 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 6 states. [2018-11-18 08:45:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:45:12,968 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-18 08:45:12,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 08:45:12,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-18 08:45:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:45:12,973 INFO L225 Difference]: With dead ends: 44 [2018-11-18 08:45:12,973 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 08:45:12,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:45:12,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 08:45:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-11-18 08:45:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 08:45:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 08:45:12,977 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-11-18 08:45:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:45:12,977 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 08:45:12,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 08:45:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-18 08:45:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:45:12,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:45:12,978 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:45:12,978 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:45:12,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:45:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash -339761261, now seen corresponding path program 1 times [2018-11-18 08:45:12,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:45:12,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:45:12,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:45:12,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:45:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:45:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:45:13,020 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:45:13,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:45:13 BoogieIcfgContainer [2018-11-18 08:45:13,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:45:13,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:45:13,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:45:13,041 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:45:13,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:45:12" (3/4) ... [2018-11-18 08:45:13,043 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:45:13,076 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bd729873-7f03-4a02-8957-44ba974dccbc/bin-2019/uautomizer/witness.graphml [2018-11-18 08:45:13,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:45:13,077 INFO L168 Benchmark]: Toolchain (without parser) took 1651.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.4 MB in the beginning and 962.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 130.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:45:13,078 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-11-18 08:45:13,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:45:13,079 INFO L168 Benchmark]: Boogie Preprocessor took 43.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:45:13,079 INFO L168 Benchmark]: RCFGBuilder took 382.50 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:45:13,079 INFO L168 Benchmark]: TraceAbstraction took 814.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.1 MB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:45:13,079 INFO L168 Benchmark]: Witness Printer took 36.04 ms. Allocated memory is still 1.2 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:45:13,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 371.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 382.50 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 814.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.1 MB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 11.5 GB. * Witness Printer took 36.04 ms. Allocated memory is still 1.2 GB. Free memory is still 962.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] EXPR, FCALL malloc(sizeof(struct node)) [L585] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L586] COND FALSE !(a == 0) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L587] List t; [L588] List p = a; [L589] FCALL a->h = 2 VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L590] COND TRUE __VERIFIER_nondet_int() [L591] FCALL p->h = 1 [L592] EXPR, FCALL malloc(sizeof(struct node)) [L592] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L593] COND FALSE !(t == 0) VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L594] FCALL p->n = t [L595] EXPR, FCALL p->n [L595] p = p->n [L590] COND FALSE !(__VERIFIER_nondet_int()) [L597] FCALL p->h = 2 [L598] FCALL p->n = 0 [L599] p = a VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L600] COND TRUE p!=0 [L601] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={12:0}] [L601] COND TRUE p->h != 2 [L602] __VERIFIER_error() VAL [a={10:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 50 SDslu, 89 SDs, 0 SdLazy, 54 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 6854 SizeOfPredicates, 7 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...