./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbc8724f3e88cc7122b112b08b352efec2eae5a9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:11:16,886 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:11:16,887 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:11:16,895 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:11:16,895 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:11:16,896 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:11:16,897 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:11:16,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:11:16,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:11:16,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:11:16,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:11:16,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:11:16,901 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:11:16,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:11:16,902 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:11:16,903 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:11:16,903 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:11:16,905 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:11:16,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:11:16,907 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:11:16,908 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:11:16,909 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:11:16,911 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:11:16,911 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:11:16,911 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:11:16,912 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:11:16,912 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:11:16,913 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:11:16,914 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:11:16,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:11:16,915 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:11:16,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:11:16,915 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:11:16,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:11:16,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:11:16,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:11:16,917 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 12:11:16,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:11:16,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:11:16,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:11:16,928 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:11:16,929 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:11:16,929 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:11:16,929 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:11:16,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:11:16,929 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:11:16,929 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:11:16,930 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:11:16,931 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:11:16,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:11:16,931 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:11:16,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:11:16,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:11:16,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:11:16,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:11:16,932 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:11:16,932 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:11:16,932 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:11:16,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> dbc8724f3e88cc7122b112b08b352efec2eae5a9 [2018-11-28 12:11:16,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:11:16,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:11:16,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:11:16,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:11:16,971 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:11:16,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2018-11-28 12:11:17,016 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/data/faa672c69/3332c277af3746a8817f9035c14cfe77/FLAG5a367eef9 [2018-11-28 12:11:17,393 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:11:17,394 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2018-11-28 12:11:17,403 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/data/faa672c69/3332c277af3746a8817f9035c14cfe77/FLAG5a367eef9 [2018-11-28 12:11:17,774 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/data/faa672c69/3332c277af3746a8817f9035c14cfe77 [2018-11-28 12:11:17,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:11:17,776 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:11:17,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:11:17,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:11:17,780 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:11:17,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:11:17" (1/1) ... [2018-11-28 12:11:17,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:17, skipping insertion in model container [2018-11-28 12:11:17,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:11:17" (1/1) ... [2018-11-28 12:11:17,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:11:17,811 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:11:17,994 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:11:18,001 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:11:18,069 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:11:18,100 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:11:18,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18 WrapperNode [2018-11-28 12:11:18,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:11:18,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:11:18,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:11:18,101 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:11:18,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... [2018-11-28 12:11:18,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:11:18,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:11:18,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:11:18,136 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:11:18,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/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 [2018-11-28 12:11:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:11:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:11:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 12:11:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:11:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 12:11:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 12:11:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 12:11:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 12:11:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 12:11:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 12:11:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 12:11:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 12:11:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 12:11:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 12:11:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 12:11:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 12:11:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 12:11:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:11:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:11:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:11:18,535 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:11:18,535 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 12:11:18,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:18 BoogieIcfgContainer [2018-11-28 12:11:18,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:11:18,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:11:18,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:11:18,538 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:11:18,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:11:17" (1/3) ... [2018-11-28 12:11:18,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64225087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:11:18, skipping insertion in model container [2018-11-28 12:11:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:18" (2/3) ... [2018-11-28 12:11:18,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64225087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:11:18, skipping insertion in model container [2018-11-28 12:11:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:18" (3/3) ... [2018-11-28 12:11:18,541 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag_false-unreach-call_false-valid-deref.i [2018-11-28 12:11:18,547 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:11:18,551 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2018-11-28 12:11:18,560 INFO L257 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2018-11-28 12:11:18,576 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:11:18,577 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:11:18,577 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:11:18,577 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:11:18,577 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:11:18,577 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:11:18,577 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:11:18,577 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:11:18,577 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:11:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-11-28 12:11:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:11:18,593 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:18,594 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:18,595 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:18,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1188482793, now seen corresponding path program 1 times [2018-11-28 12:11:18,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:18,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:18,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:18,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:18,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:18,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:11:18,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:11:18,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:11:18,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:11:18,707 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-11-28 12:11:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:18,721 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2018-11-28 12:11:18,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:11:18,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 12:11:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:18,727 INFO L225 Difference]: With dead ends: 88 [2018-11-28 12:11:18,727 INFO L226 Difference]: Without dead ends: 80 [2018-11-28 12:11:18,728 INFO L631 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 [2018-11-28 12:11:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-28 12:11:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-11-28 12:11:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-28 12:11:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2018-11-28 12:11:18,757 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 10 [2018-11-28 12:11:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:18,758 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2018-11-28 12:11:18,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:11:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2018-11-28 12:11:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 12:11:18,758 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:18,758 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:18,759 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:18,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash -330781038, now seen corresponding path program 1 times [2018-11-28 12:11:18,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:18,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:18,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:18,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:18,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:18,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:11:18,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:11:18,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:11:18,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:11:18,826 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 4 states. [2018-11-28 12:11:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:18,966 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2018-11-28 12:11:18,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:11:18,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 12:11:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:18,968 INFO L225 Difference]: With dead ends: 88 [2018-11-28 12:11:18,968 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 12:11:18,968 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 12:11:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2018-11-28 12:11:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-28 12:11:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2018-11-28 12:11:18,975 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 12 [2018-11-28 12:11:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:18,975 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2018-11-28 12:11:18,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:11:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2018-11-28 12:11:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 12:11:18,976 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:18,976 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:18,977 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:18,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:18,977 INFO L82 PathProgramCache]: Analyzing trace with hash -330781037, now seen corresponding path program 1 times [2018-11-28 12:11:18,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:18,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:18,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:18,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:19,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:19,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:11:19,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:11:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:11:19,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:11:19,027 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 4 states. [2018-11-28 12:11:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:19,165 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2018-11-28 12:11:19,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:11:19,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 12:11:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:19,166 INFO L225 Difference]: With dead ends: 105 [2018-11-28 12:11:19,166 INFO L226 Difference]: Without dead ends: 105 [2018-11-28 12:11:19,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-28 12:11:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2018-11-28 12:11:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-28 12:11:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2018-11-28 12:11:19,175 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 12 [2018-11-28 12:11:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:19,175 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2018-11-28 12:11:19,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:11:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2018-11-28 12:11:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 12:11:19,176 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:19,176 INFO L402 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] [2018-11-28 12:11:19,176 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:19,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1797716368, now seen corresponding path program 1 times [2018-11-28 12:11:19,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:19,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:19,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:19,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:19,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:19,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:11:19,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:11:19,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:11:19,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:19,261 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 5 states. [2018-11-28 12:11:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:19,394 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2018-11-28 12:11:19,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:11:19,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-28 12:11:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:19,399 INFO L225 Difference]: With dead ends: 151 [2018-11-28 12:11:19,399 INFO L226 Difference]: Without dead ends: 148 [2018-11-28 12:11:19,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:11:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-11-28 12:11:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 122. [2018-11-28 12:11:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-11-28 12:11:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2018-11-28 12:11:19,407 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 22 [2018-11-28 12:11:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:19,408 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2018-11-28 12:11:19,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:11:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2018-11-28 12:11:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 12:11:19,409 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:19,409 INFO L402 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] [2018-11-28 12:11:19,409 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:19,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:19,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1656181225, now seen corresponding path program 1 times [2018-11-28 12:11:19,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:19,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:19,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:19,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:19,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:19,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 12:11:19,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:11:19,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:11:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:11:19,461 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 6 states. [2018-11-28 12:11:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:19,600 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2018-11-28 12:11:19,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:11:19,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-11-28 12:11:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:19,601 INFO L225 Difference]: With dead ends: 130 [2018-11-28 12:11:19,601 INFO L226 Difference]: Without dead ends: 130 [2018-11-28 12:11:19,601 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:11:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-28 12:11:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2018-11-28 12:11:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 12:11:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2018-11-28 12:11:19,607 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 22 [2018-11-28 12:11:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:19,608 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2018-11-28 12:11:19,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:11:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2018-11-28 12:11:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:11:19,608 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:19,609 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:19,609 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr25REQUIRES_VIOLATION, mainErr34ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:19,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:19,609 INFO L82 PathProgramCache]: Analyzing trace with hash -982735245, now seen corresponding path program 1 times [2018-11-28 12:11:19,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:19,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:19,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:19,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:11:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:11:19,645 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:11:19,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:11:19 BoogieIcfgContainer [2018-11-28 12:11:19,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:11:19,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:11:19,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:11:19,663 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:11:19,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:18" (3/4) ... [2018-11-28 12:11:19,665 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 12:11:19,699 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_43b0ddf3-dd8c-46a2-8603-9b7079423cf0/bin-2019/uautomizer/witness.graphml [2018-11-28 12:11:19,699 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:11:19,700 INFO L168 Benchmark]: Toolchain (without parser) took 1924.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 950.6 MB in the beginning and 941.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 172.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:19,701 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:11:19,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -198.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:19,702 INFO L168 Benchmark]: Boogie Preprocessor took 34.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:11:19,702 INFO L168 Benchmark]: RCFGBuilder took 399.75 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: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:19,702 INFO L168 Benchmark]: TraceAbstraction took 1126.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.1 MB in the end (delta: 149.4 MB). Peak memory consumption was 149.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:19,703 INFO L168 Benchmark]: Witness Printer took 36.51 ms. Allocated memory is still 1.2 GB. Free memory was 945.1 MB in the beginning and 941.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:19,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -198.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 399.75 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: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1126.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.1 MB in the end (delta: 149.4 MB). Peak memory consumption was 149.4 MB. Max. memory is 11.5 GB. * Witness Printer took 36.51 ms. Allocated memory is still 1.2 GB. Free memory was 945.1 MB in the beginning and 941.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 662]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={18:0}, malloc(sizeof(struct node))={18:0}] [L630] COND FALSE !(a == 0) VAL [a={18:0}, malloc(sizeof(struct node))={18:0}] [L631] p = a [L632] int i = 0; VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}] [L633] i < 20 && __VERIFIER_nondet_int() [L633] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={18:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={18:0}, p={18:0}] [L633] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L646] p->h = 3 VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}] [L647] p = a VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}] [L648] EXPR p->h VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}, p->h=3] [L648] COND FALSE !(p->h != 3) [L659] EXPR p->h VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}, p->h=3] [L659] COND FALSE !(p->h != 3 || i > 20) [L661] p = a VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}] [L662] EXPR p->n VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}, p->n={17:15}] [L662] COND TRUE p->n != 0 [L663] EXPR p->n VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}, p->n={17:15}] [L663] t = p->n [L664] free(p) VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={18:0}, t={17:15}] [L664] free(p) [L665] p = t VAL [a={18:0}, i=0, malloc(sizeof(struct node))={18:0}, p={17:15}, t={17:15}] [L662] p->n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 90 locations, 35 error locations. UNSAFE Result, 1.0s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 269 SDtfs, 432 SDslu, 312 SDs, 0 SdLazy, 444 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, 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, 74 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 4874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...