./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/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 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.24-0ed9222-m [2019-01-13 22:41:34,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 22:41:34,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 22:41:34,261 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 22:41:34,261 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 22:41:34,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 22:41:34,263 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 22:41:34,265 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 22:41:34,267 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 22:41:34,268 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 22:41:34,269 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 22:41:34,269 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 22:41:34,271 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 22:41:34,271 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 22:41:34,273 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 22:41:34,274 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 22:41:34,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 22:41:34,277 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 22:41:34,279 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 22:41:34,281 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 22:41:34,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 22:41:34,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 22:41:34,286 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 22:41:34,286 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 22:41:34,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 22:41:34,288 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 22:41:34,289 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 22:41:34,290 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 22:41:34,290 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 22:41:34,291 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 22:41:34,292 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 22:41:34,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 22:41:34,293 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 22:41:34,296 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 22:41:34,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 22:41:34,297 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 22:41:34,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-13 22:41:34,320 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 22:41:34,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 22:41:34,322 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 22:41:34,323 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 22:41:34,323 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 22:41:34,323 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 22:41:34,323 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 22:41:34,324 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 22:41:34,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 22:41:34,324 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 22:41:34,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 22:41:34,324 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 22:41:34,325 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 22:41:34,325 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 22:41:34,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 22:41:34,325 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 22:41:34,325 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 22:41:34,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 22:41:34,326 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 22:41:34,327 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 22:41:34,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 22:41:34,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 22:41:34,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 22:41:34,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 22:41:34,328 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-13 22:41:34,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 22:41:34,328 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2019-01-13 22:41:34,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 22:41:34,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 22:41:34,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 22:41:34,388 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 22:41:34,389 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 22:41:34,389 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2019-01-13 22:41:34,450 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e06dcc01/e54ae38b0a3642d9884275caaeba5ef6/FLAG1df033a77 [2019-01-13 22:41:35,007 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 22:41:35,007 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2019-01-13 22:41:35,026 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e06dcc01/e54ae38b0a3642d9884275caaeba5ef6/FLAG1df033a77 [2019-01-13 22:41:35,294 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e06dcc01/e54ae38b0a3642d9884275caaeba5ef6 [2019-01-13 22:41:35,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 22:41:35,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 22:41:35,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 22:41:35,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 22:41:35,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 22:41:35,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:35,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c433c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35, skipping insertion in model container [2019-01-13 22:41:35,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:35,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 22:41:35,361 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 22:41:35,728 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 22:41:35,739 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 22:41:35,865 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 22:41:35,930 INFO L195 MainTranslator]: Completed translation [2019-01-13 22:41:35,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35 WrapperNode [2019-01-13 22:41:35,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 22:41:35,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 22:41:35,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 22:41:35,933 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 22:41:35,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:35,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:35,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:35,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:36,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:36,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:36,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... [2019-01-13 22:41:36,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 22:41:36,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 22:41:36,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 22:41:36,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 22:41:36,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-13 22:41:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 22:41:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 22:41:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-13 22:41:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 22:41:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-13 22:41:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-13 22:41:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-13 22:41:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-13 22:41:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-13 22:41:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-13 22:41:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-13 22:41:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-13 22:41:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-13 22:41:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-13 22:41:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-13 22:41:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-13 22:41:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-13 22:41:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-13 22:41:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-13 22:41:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-13 22:41:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-13 22:41:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-13 22:41:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-13 22:41:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-13 22:41:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-13 22:41:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-13 22:41:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-13 22:41:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-13 22:41:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-13 22:41:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-13 22:41:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-13 22:41:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-13 22:41:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-13 22:41:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-13 22:41:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-13 22:41:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-13 22:41:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-13 22:41:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-13 22:41:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-13 22:41:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-13 22:41:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-13 22:41:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-13 22:41:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-13 22:41:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-13 22:41:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-13 22:41:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-13 22:41:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-13 22:41:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-13 22:41:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-13 22:41:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 22:41:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-13 22:41:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-13 22:41:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-13 22:41:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-13 22:41:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-13 22:41:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 22:41:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 22:41:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 22:41:36,498 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-13 22:41:36,939 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 22:41:36,939 INFO L286 CfgBuilder]: Removed 3 assue(true) statements. [2019-01-13 22:41:36,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:41:36 BoogieIcfgContainer [2019-01-13 22:41:36,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 22:41:36,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 22:41:36,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 22:41:36,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 22:41:36,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 10:41:35" (1/3) ... [2019-01-13 22:41:36,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5309af60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 10:41:36, skipping insertion in model container [2019-01-13 22:41:36,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:41:35" (2/3) ... [2019-01-13 22:41:36,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5309af60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 10:41:36, skipping insertion in model container [2019-01-13 22:41:36,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:41:36" (3/3) ... [2019-01-13 22:41:36,949 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag_false-unreach-call_false-valid-deref.i [2019-01-13 22:41:36,960 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 22:41:36,969 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2019-01-13 22:41:36,987 INFO L257 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2019-01-13 22:41:37,013 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 22:41:37,014 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 22:41:37,014 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 22:41:37,014 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 22:41:37,014 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 22:41:37,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 22:41:37,015 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 22:41:37,015 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 22:41:37,015 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 22:41:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2019-01-13 22:41:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-13 22:41:37,043 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:37,045 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 22:41:37,047 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -228007195, now seen corresponding path program 1 times [2019-01-13 22:41:37,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:37,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:37,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:37,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:37,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:37,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:37,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 22:41:37,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-13 22:41:37,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-13 22:41:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-13 22:41:37,223 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2019-01-13 22:41:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:37,245 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2019-01-13 22:41:37,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-13 22:41:37,246 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-13 22:41:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:37,255 INFO L225 Difference]: With dead ends: 92 [2019-01-13 22:41:37,255 INFO L226 Difference]: Without dead ends: 84 [2019-01-13 22:41:37,257 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 [2019-01-13 22:41:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-01-13 22:41:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-01-13 22:41:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-01-13 22:41:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2019-01-13 22:41:37,302 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 10 [2019-01-13 22:41:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:37,302 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2019-01-13 22:41:37,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-13 22:41:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2019-01-13 22:41:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-13 22:41:37,303 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:37,303 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 22:41:37,304 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash -73026674, now seen corresponding path program 1 times [2019-01-13 22:41:37,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:37,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:37,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:37,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:37,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:37,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:37,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 22:41:37,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 22:41:37,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 22:41:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 22:41:37,414 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 4 states. [2019-01-13 22:41:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:38,049 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2019-01-13 22:41:38,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-13 22:41:38,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-13 22:41:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:38,052 INFO L225 Difference]: With dead ends: 96 [2019-01-13 22:41:38,053 INFO L226 Difference]: Without dead ends: 96 [2019-01-13 22:41:38,054 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 [2019-01-13 22:41:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-01-13 22:41:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2019-01-13 22:41:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-01-13 22:41:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2019-01-13 22:41:38,070 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 12 [2019-01-13 22:41:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:38,072 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2019-01-13 22:41:38,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 22:41:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2019-01-13 22:41:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-13 22:41:38,073 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:38,073 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 22:41:38,073 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash -73026673, now seen corresponding path program 1 times [2019-01-13 22:41:38,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:38,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:38,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:38,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:38,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:38,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:38,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 22:41:38,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 22:41:38,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 22:41:38,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 22:41:38,231 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2019-01-13 22:41:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:38,634 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2019-01-13 22:41:38,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 22:41:38,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-13 22:41:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:38,639 INFO L225 Difference]: With dead ends: 113 [2019-01-13 22:41:38,639 INFO L226 Difference]: Without dead ends: 113 [2019-01-13 22:41:38,639 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 [2019-01-13 22:41:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-01-13 22:41:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2019-01-13 22:41:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-01-13 22:41:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2019-01-13 22:41:38,650 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 12 [2019-01-13 22:41:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:38,651 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2019-01-13 22:41:38,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 22:41:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2019-01-13 22:41:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-01-13 22:41:38,652 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:38,652 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] [2019-01-13 22:41:38,653 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash -420037075, now seen corresponding path program 1 times [2019-01-13 22:41:38,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:38,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:38,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:38,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:38,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:38,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:38,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-13 22:41:38,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 22:41:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 22:41:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-13 22:41:38,740 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 4 states. [2019-01-13 22:41:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:38,974 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2019-01-13 22:41:38,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 22:41:38,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-01-13 22:41:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:38,978 INFO L225 Difference]: With dead ends: 107 [2019-01-13 22:41:38,978 INFO L226 Difference]: Without dead ends: 107 [2019-01-13 22:41:38,978 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 [2019-01-13 22:41:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-01-13 22:41:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2019-01-13 22:41:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-01-13 22:41:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2019-01-13 22:41:38,986 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 21 [2019-01-13 22:41:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:38,987 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2019-01-13 22:41:38,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 22:41:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2019-01-13 22:41:38,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-13 22:41:38,988 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:38,988 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] [2019-01-13 22:41:38,989 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 5285907, now seen corresponding path program 1 times [2019-01-13 22:41:38,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:38,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:38,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:38,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:38,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:39,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:39,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-13 22:41:39,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-13 22:41:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-13 22:41:39,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-13 22:41:39,152 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 6 states. [2019-01-13 22:41:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:39,482 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2019-01-13 22:41:39,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-13 22:41:39,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-01-13 22:41:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:39,485 INFO L225 Difference]: With dead ends: 146 [2019-01-13 22:41:39,485 INFO L226 Difference]: Without dead ends: 146 [2019-01-13 22:41:39,486 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-01-13 22:41:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-01-13 22:41:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 106. [2019-01-13 22:41:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-01-13 22:41:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2019-01-13 22:41:39,495 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 22 [2019-01-13 22:41:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:39,495 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2019-01-13 22:41:39,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-13 22:41:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2019-01-13 22:41:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-01-13 22:41:39,496 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:39,496 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] [2019-01-13 22:41:39,497 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash 71302673, now seen corresponding path program 1 times [2019-01-13 22:41:39,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:39,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:39,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:39,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:39,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:41:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:41:39,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:41:39,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 22:41:39,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 22:41:39,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 22:41:39,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-13 22:41:39,631 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 5 states. [2019-01-13 22:41:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:41:40,178 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2019-01-13 22:41:40,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-13 22:41:40,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-01-13 22:41:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:41:40,181 INFO L225 Difference]: With dead ends: 136 [2019-01-13 22:41:40,181 INFO L226 Difference]: Without dead ends: 132 [2019-01-13 22:41:40,181 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 [2019-01-13 22:41:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-01-13 22:41:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-01-13 22:41:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-01-13 22:41:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2019-01-13 22:41:40,191 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 23 [2019-01-13 22:41:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:41:40,192 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2019-01-13 22:41:40,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 22:41:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2019-01-13 22:41:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-01-13 22:41:40,193 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:41:40,193 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, 1] [2019-01-13 22:41:40,193 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr27REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr24REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2019-01-13 22:41:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:41:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1164189411, now seen corresponding path program 1 times [2019-01-13 22:41:40,194 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:41:40,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:41:40,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:40,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:41:40,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:41:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 22:41:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 22:41:40,273 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-13 22:41:40,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 10:41:40 BoogieIcfgContainer [2019-01-13 22:41:40,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 22:41:40,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 22:41:40,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 22:41:40,306 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 22:41:40,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:41:36" (3/4) ... [2019-01-13 22:41:40,309 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-13 22:41:40,360 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-13 22:41:40,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 22:41:40,361 INFO L168 Benchmark]: Toolchain (without parser) took 5061.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.3 MB in the beginning and 866.1 MB in the end (delta: 77.3 MB). Peak memory consumption was 198.4 MB. Max. memory is 11.5 GB. [2019-01-13 22:41:40,363 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 22:41:40,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -152.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-01-13 22:41:40,365 INFO L168 Benchmark]: Boogie Preprocessor took 92.36 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. [2019-01-13 22:41:40,365 INFO L168 Benchmark]: RCFGBuilder took 917.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 11.5 GB. [2019-01-13 22:41:40,366 INFO L168 Benchmark]: TraceAbstraction took 3362.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 866.1 MB in the end (delta: 177.3 MB). Peak memory consumption was 177.3 MB. Max. memory is 11.5 GB. [2019-01-13 22:41:40,366 INFO L168 Benchmark]: Witness Printer took 54.83 ms. Allocated memory is still 1.2 GB. Free memory is still 866.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 22:41:40,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 628.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -152.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.36 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 917.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3362.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 866.1 MB in the end (delta: 177.3 MB). Peak memory consumption was 177.3 MB. Max. memory is 11.5 GB. * Witness Printer took 54.83 ms. Allocated memory is still 1.2 GB. Free memory is still 866.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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={4:0}, malloc(sizeof(struct node))={4:0}] [L630] COND FALSE !(a == 0) VAL [a={4:0}, malloc(sizeof(struct node))={4:0}] [L631] p = a [L632] int i = 0; VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L633] i < 20 && __VERIFIER_nondet_int() [L633] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={4:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L633] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L646] p->h = 3 VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L647] p = a VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L648] EXPR p->h VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->h=3] [L648] COND FALSE !(p->h != 3) [L659] EXPR p->h VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->h=3] [L659] COND FALSE !(p->h != 3 || i > 20) [L661] p = a VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}] [L662] EXPR p->n VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->n={17:15}] [L662] COND TRUE p->n != 0 [L663] EXPR p->n VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, p->n={17:15}] [L663] t = p->n [L664] free(p) VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, t={17:15}] [L664] free(p) VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={4:0}, t={17:15}] [L664] free(p) [L665] p = t VAL [a={4:0}, i=0, malloc(sizeof(struct node))={4:0}, p={17:15}, t={17:15}] [L662] p->n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 93 locations, 37 error locations. UNSAFE Result, 3.3s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 330 SDtfs, 583 SDslu, 350 SDs, 0 SdLazy, 547 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=6, 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, 6 MinimizatonAttempts, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 6286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...