./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.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-properties/list_flag_true-unreach-call_false-valid-memtrack.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 22b342a177abe6e71ce9cf9da662ebff6e69063a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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-properties/list_flag_true-unreach-call_false-valid-memtrack.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 22b342a177abe6e71ce9cf9da662ebff6e69063a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 19:40:13,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 19:40:13,932 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 19:40:13,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 19:40:13,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 19:40:13,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 19:40:13,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 19:40:13,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 19:40:13,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 19:40:13,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 19:40:13,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 19:40:13,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 19:40:13,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 19:40:13,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 19:40:13,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 19:40:13,972 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 19:40:13,973 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 19:40:13,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 19:40:13,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 19:40:13,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 19:40:13,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 19:40:13,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 19:40:13,994 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 19:40:13,994 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 19:40:13,995 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 19:40:13,995 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 19:40:13,997 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 19:40:13,997 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 19:40:13,998 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 19:40:14,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 19:40:14,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 19:40:14,000 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 19:40:14,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 19:40:14,001 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 19:40:14,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 19:40:14,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 19:40:14,003 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 19:40:14,023 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 19:40:14,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 19:40:14,025 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 19:40:14,030 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 19:40:14,031 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 19:40:14,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 19:40:14,031 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 19:40:14,031 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 19:40:14,032 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 19:40:14,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 19:40:14,034 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 19:40:14,035 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 19:40:14,035 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 19:40:14,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 19:40:14,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 19:40:14,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:40:14,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 19:40:14,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 19:40:14,038 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 19:40:14,038 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 19:40:14,038 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 -> 22b342a177abe6e71ce9cf9da662ebff6e69063a [2019-01-14 19:40:14,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 19:40:14,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 19:40:14,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 19:40:14,119 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 19:40:14,119 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 19:40:14,121 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:14,177 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc137330/e2384d1b051549c2b9b0845b478c5a22/FLAGbbe786d63 [2019-01-14 19:40:14,647 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 19:40:14,647 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:14,663 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc137330/e2384d1b051549c2b9b0845b478c5a22/FLAGbbe786d63 [2019-01-14 19:40:14,952 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc137330/e2384d1b051549c2b9b0845b478c5a22 [2019-01-14 19:40:14,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 19:40:14,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 19:40:14,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:14,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 19:40:14,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 19:40:14,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:14" (1/1) ... [2019-01-14 19:40:14,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4bc97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:14, skipping insertion in model container [2019-01-14 19:40:14,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:14" (1/1) ... [2019-01-14 19:40:14,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 19:40:15,025 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 19:40:15,378 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:15,394 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 19:40:15,504 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:15,562 INFO L195 MainTranslator]: Completed translation [2019-01-14 19:40:15,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15 WrapperNode [2019-01-14 19:40:15,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:15,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 19:40:15,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 19:40:15,564 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 19:40:15,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (1/1) ... [2019-01-14 19:40:15,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 19:40:15,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 19:40:15,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 19:40:15,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 19:40:15,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (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 [2019-01-14 19:40:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 19:40:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 19:40:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-14 19:40:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 19:40:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 19:40:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 19:40:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 19:40:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 19:40:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 19:40:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 19:40:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 19:40:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 19:40:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 19:40:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 19:40:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 19:40:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 19:40:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 19:40:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 19:40:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 19:40:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 19:40:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 19:40:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 19:40:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 19:40:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 19:40:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 19:40:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 19:40:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 19:40:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 19:40:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 19:40:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 19:40:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 19:40:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 19:40:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 19:40:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 19:40:16,104 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-14 19:40:16,495 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 19:40:16,496 INFO L286 CfgBuilder]: Removed 3 assue(true) statements. [2019-01-14 19:40:16,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:16 BoogieIcfgContainer [2019-01-14 19:40:16,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 19:40:16,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 19:40:16,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 19:40:16,501 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 19:40:16,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 07:40:14" (1/3) ... [2019-01-14 19:40:16,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dc5812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:16, skipping insertion in model container [2019-01-14 19:40:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:15" (2/3) ... [2019-01-14 19:40:16,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dc5812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:16, skipping insertion in model container [2019-01-14 19:40:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:16" (3/3) ... [2019-01-14 19:40:16,505 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:16,515 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 19:40:16,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-01-14 19:40:16,540 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-01-14 19:40:16,568 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 19:40:16,568 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 19:40:16,569 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 19:40:16,569 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 19:40:16,569 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 19:40:16,569 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 19:40:16,570 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 19:40:16,570 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 19:40:16,570 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 19:40:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-01-14 19:40:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:16,598 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:16,599 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:16,602 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 19:40:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:16,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1106867600, now seen corresponding path program 1 times [2019-01-14 19:40:16,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:16,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:16,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:16,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:16,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:16,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:16,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 19:40:16,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 19:40:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 19:40:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 19:40:16,791 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-01-14 19:40:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:16,819 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-01-14 19:40:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 19:40:16,821 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-14 19:40:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:16,832 INFO L225 Difference]: With dead ends: 61 [2019-01-14 19:40:16,833 INFO L226 Difference]: Without dead ends: 53 [2019-01-14 19:40:16,835 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 [2019-01-14 19:40:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-01-14 19:40:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-01-14 19:40:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-01-14 19:40:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-01-14 19:40:16,881 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2019-01-14 19:40:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:16,881 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-01-14 19:40:16,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 19:40:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-01-14 19:40:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:40:16,882 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:16,883 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:16,883 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 19:40:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash 46809097, now seen corresponding path program 1 times [2019-01-14 19:40:16,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:16,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:16,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:16,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:16,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:17,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:17,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:17,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:17,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:17,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:17,115 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2019-01-14 19:40:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:17,534 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-01-14 19:40:17,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:17,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 19:40:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:17,538 INFO L225 Difference]: With dead ends: 61 [2019-01-14 19:40:17,538 INFO L226 Difference]: Without dead ends: 61 [2019-01-14 19:40:17,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-01-14 19:40:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2019-01-14 19:40:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-01-14 19:40:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-01-14 19:40:17,548 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 11 [2019-01-14 19:40:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:17,549 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-01-14 19:40:17,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-01-14 19:40:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 19:40:17,549 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:17,550 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:17,550 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 19:40:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash 46809098, now seen corresponding path program 1 times [2019-01-14 19:40:17,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:17,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:17,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:17,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:17,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:17,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:17,653 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 4 states. [2019-01-14 19:40:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:18,215 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2019-01-14 19:40:18,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:18,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 19:40:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:18,218 INFO L225 Difference]: With dead ends: 72 [2019-01-14 19:40:18,218 INFO L226 Difference]: Without dead ends: 72 [2019-01-14 19:40:18,219 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-01-14 19:40:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2019-01-14 19:40:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-01-14 19:40:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2019-01-14 19:40:18,227 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2019-01-14 19:40:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:18,228 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2019-01-14 19:40:18,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2019-01-14 19:40:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 19:40:18,229 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:18,229 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:18,229 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-01-14 19:40:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1944909317, now seen corresponding path program 1 times [2019-01-14 19:40:18,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 19:40:18,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 19:40:18,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:18,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:18,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 19:40:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:18,292 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 19:40:18,302 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 19:40:18,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 07:40:18 BoogieIcfgContainer [2019-01-14 19:40:18,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 19:40:18,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 19:40:18,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 19:40:18,316 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 19:40:18,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:16" (3/4) ... [2019-01-14 19:40:18,321 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 19:40:18,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 19:40:18,322 INFO L168 Benchmark]: Toolchain (without parser) took 3366.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -66.7 MB). Peak memory consumption was 75.9 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:18,324 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-01-14 19:40:18,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:18,325 INFO L168 Benchmark]: Boogie Preprocessor took 70.64 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:18,326 INFO L168 Benchmark]: RCFGBuilder took 862.56 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:18,327 INFO L168 Benchmark]: TraceAbstraction took 1817.49 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: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:18,328 INFO L168 Benchmark]: Witness Printer took 5.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:18,333 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 606.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.64 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 862.56 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1817.49 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: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L630] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L631] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L644] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L645] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L649] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 62 locations, 21 error locations. UNSAFE Result, 1.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 181 SDslu, 35 SDs, 0 SdLazy, 102 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-14 19:40:20,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 19:40:20,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 19:40:20,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 19:40:20,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 19:40:20,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 19:40:20,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 19:40:20,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 19:40:20,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 19:40:20,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 19:40:20,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 19:40:20,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 19:40:20,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 19:40:20,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 19:40:20,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 19:40:20,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 19:40:20,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 19:40:20,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 19:40:20,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 19:40:20,612 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 19:40:20,613 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 19:40:20,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 19:40:20,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 19:40:20,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 19:40:20,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 19:40:20,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 19:40:20,619 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 19:40:20,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 19:40:20,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 19:40:20,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 19:40:20,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 19:40:20,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 19:40:20,624 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 19:40:20,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 19:40:20,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 19:40:20,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 19:40:20,626 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-01-14 19:40:20,643 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 19:40:20,644 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 19:40:20,645 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 19:40:20,645 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 19:40:20,645 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 19:40:20,646 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 19:40:20,646 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 19:40:20,646 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 19:40:20,646 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 19:40:20,646 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 19:40:20,646 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-14 19:40:20,647 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-14 19:40:20,648 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 19:40:20,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 19:40:20,648 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 19:40:20,648 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 19:40:20,648 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 19:40:20,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 19:40:20,649 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 19:40:20,649 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 19:40:20,649 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-14 19:40:20,649 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 19:40:20,649 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-14 19:40:20,650 INFO L133 SettingsManager]: * Logic for external solver=AUFBV 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 -> 22b342a177abe6e71ce9cf9da662ebff6e69063a [2019-01-14 19:40:20,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 19:40:20,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 19:40:20,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 19:40:20,702 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 19:40:20,702 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 19:40:20,703 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:20,767 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0fc3121/ad7d6950587a46bf9a1f6069e0c16c30/FLAGc8f7d1509 [2019-01-14 19:40:21,258 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 19:40:21,262 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:21,277 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0fc3121/ad7d6950587a46bf9a1f6069e0c16c30/FLAGc8f7d1509 [2019-01-14 19:40:21,559 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0fc3121/ad7d6950587a46bf9a1f6069e0c16c30 [2019-01-14 19:40:21,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 19:40:21,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 19:40:21,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:21,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 19:40:21,569 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 19:40:21,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:21" (1/1) ... [2019-01-14 19:40:21,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee16498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:21, skipping insertion in model container [2019-01-14 19:40:21,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 07:40:21" (1/1) ... [2019-01-14 19:40:21,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 19:40:21,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 19:40:22,027 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:22,042 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 19:40:22,109 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 19:40:22,254 INFO L195 MainTranslator]: Completed translation [2019-01-14 19:40:22,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22 WrapperNode [2019-01-14 19:40:22,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 19:40:22,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 19:40:22,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 19:40:22,257 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 19:40:22,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (1/1) ... [2019-01-14 19:40:22,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 19:40:22,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 19:40:22,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 19:40:22,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 19:40:22,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (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 [2019-01-14 19:40:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 19:40:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 19:40:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-01-14 19:40:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-01-14 19:40:22,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 19:40:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-01-14 19:40:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 19:40:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 19:40:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 19:40:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 19:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 19:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 19:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 19:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 19:40:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 19:40:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 19:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 19:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 19:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-01-14 19:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 19:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 19:40:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 19:40:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 19:40:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 19:40:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 19:40:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 19:40:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 19:40:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 19:40:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 19:40:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 19:40:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 19:40:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 19:40:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 19:40:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 19:40:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 19:40:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 19:40:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 19:40:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-01-14 19:40:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 19:40:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 19:40:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-01-14 19:40:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 19:40:22,858 INFO L695 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-01-14 19:40:23,283 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 19:40:23,283 INFO L286 CfgBuilder]: Removed 3 assue(true) statements. [2019-01-14 19:40:23,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:23 BoogieIcfgContainer [2019-01-14 19:40:23,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 19:40:23,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 19:40:23,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 19:40:23,289 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 19:40:23,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 07:40:21" (1/3) ... [2019-01-14 19:40:23,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502fba3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:23, skipping insertion in model container [2019-01-14 19:40:23,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 07:40:22" (2/3) ... [2019-01-14 19:40:23,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502fba3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 07:40:23, skipping insertion in model container [2019-01-14 19:40:23,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:23" (3/3) ... [2019-01-14 19:40:23,292 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2019-01-14 19:40:23,302 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 19:40:23,310 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-01-14 19:40:23,327 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-01-14 19:40:23,353 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 19:40:23,354 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 19:40:23,354 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 19:40:23,354 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 19:40:23,355 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 19:40:23,355 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 19:40:23,355 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 19:40:23,355 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 19:40:23,355 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 19:40:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-01-14 19:40:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:23,382 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:23,383 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:23,386 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-14 19:40:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:23,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1529947726, now seen corresponding path program 1 times [2019-01-14 19:40:23,396 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:23,397 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-14 19:40:23,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:23,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:23,489 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:23,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:23,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 19:40:23,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 19:40:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 19:40:23,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 19:40:23,511 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-01-14 19:40:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:23,531 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-01-14 19:40:23,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 19:40:23,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-14 19:40:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:23,542 INFO L225 Difference]: With dead ends: 60 [2019-01-14 19:40:23,543 INFO L226 Difference]: Without dead ends: 52 [2019-01-14 19:40:23,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 19:40:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-01-14 19:40:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-01-14 19:40:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-01-14 19:40:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-01-14 19:40:23,588 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2019-01-14 19:40:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:23,589 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2019-01-14 19:40:23,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 19:40:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2019-01-14 19:40:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:23,589 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:23,590 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:23,590 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-14 19:40:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:23,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1529948687, now seen corresponding path program 1 times [2019-01-14 19:40:23,592 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:23,593 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-14 19:40:23,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:23,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:23,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-14 19:40:23,709 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:23,746 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:23,747 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-01-14 19:40:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:23,906 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:23,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:23,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:23,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:23,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:23,912 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2019-01-14 19:40:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:24,808 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2019-01-14 19:40:24,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:24,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-01-14 19:40:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:24,812 INFO L225 Difference]: With dead ends: 85 [2019-01-14 19:40:24,812 INFO L226 Difference]: Without dead ends: 85 [2019-01-14 19:40:24,813 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-01-14 19:40:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2019-01-14 19:40:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-01-14 19:40:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2019-01-14 19:40:24,825 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 10 [2019-01-14 19:40:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:24,826 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2019-01-14 19:40:24,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2019-01-14 19:40:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 19:40:24,826 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:24,828 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:24,828 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-14 19:40:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1529948688, now seen corresponding path program 1 times [2019-01-14 19:40:24,830 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:24,830 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-14 19:40:24,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:24,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:24,926 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-14 19:40:24,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:24,949 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:24,950 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-01-14 19:40:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:24,989 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4 --incremental --print-success --lang smt --rewrite-divk (4)] Exception during sending of exit command (exit): Broken pipe [2019-01-14 19:40:24,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:24,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 19:40:24,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 19:40:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 19:40:24,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 19:40:24,992 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 4 states. [2019-01-14 19:40:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:25,407 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2019-01-14 19:40:25,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 19:40:25,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-01-14 19:40:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:25,410 INFO L225 Difference]: With dead ends: 63 [2019-01-14 19:40:25,410 INFO L226 Difference]: Without dead ends: 63 [2019-01-14 19:40:25,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 19:40:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-01-14 19:40:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-01-14 19:40:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-01-14 19:40:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2019-01-14 19:40:25,421 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2019-01-14 19:40:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:25,422 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2019-01-14 19:40:25,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 19:40:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2019-01-14 19:40:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 19:40:25,423 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:25,423 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:25,423 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-14 19:40:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash 866734318, now seen corresponding path program 1 times [2019-01-14 19:40:25,428 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:25,428 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-14 19:40:25,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 19:40:25,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 19:40:25,563 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2019-01-14 19:40:25,572 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2019-01-14 19:40:25,572 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,575 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,598 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,598 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-01-14 19:40:25,659 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2019-01-14 19:40:25,666 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2019-01-14 19:40:25,667 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,675 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-01-14 19:40:25,678 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2019-01-14 19:40:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 19:40:25,690 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-14 19:40:25,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 19:40:25,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-01-14 19:40:25,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 19:40:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 19:40:25,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-14 19:40:25,697 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 7 states. [2019-01-14 19:40:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 19:40:26,290 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2019-01-14 19:40:26,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 19:40:26,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-01-14 19:40:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 19:40:26,294 INFO L225 Difference]: With dead ends: 93 [2019-01-14 19:40:26,294 INFO L226 Difference]: Without dead ends: 93 [2019-01-14 19:40:26,295 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-14 19:40:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-01-14 19:40:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2019-01-14 19:40:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-01-14 19:40:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2019-01-14 19:40:26,304 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 17 [2019-01-14 19:40:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 19:40:26,304 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2019-01-14 19:40:26,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 19:40:26,305 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2019-01-14 19:40:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 19:40:26,306 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 19:40:26,307 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 19:40:26,307 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-01-14 19:40:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 19:40:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash 866702745, now seen corresponding path program 1 times [2019-01-14 19:40:26,309 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2019-01-14 19:40:26,309 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-01-14 19:40:26,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 19:40:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 19:40:26,471 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 19:40:26,485 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-01-14 19:40:26,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 07:40:26 BoogieIcfgContainer [2019-01-14 19:40:26,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 19:40:26,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 19:40:26,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 19:40:26,520 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 19:40:26,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 07:40:23" (3/4) ... [2019-01-14 19:40:26,527 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 19:40:26,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 19:40:26,529 INFO L168 Benchmark]: Toolchain (without parser) took 4965.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 947.3 MB in the beginning and 936.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 160.2 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:26,531 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:26,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:26,534 INFO L168 Benchmark]: Boogie Preprocessor took 96.09 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. [2019-01-14 19:40:26,535 INFO L168 Benchmark]: RCFGBuilder took 932.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:26,536 INFO L168 Benchmark]: TraceAbstraction took 3233.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.1 MB in the end (delta: 134.0 MB). Peak memory consumption was 134.0 MB. Max. memory is 11.5 GB. [2019-01-14 19:40:26,537 INFO L168 Benchmark]: Witness Printer took 8.41 ms. Allocated memory is still 1.2 GB. Free memory is still 936.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 19:40:26,543 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 690.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.09 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 932.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3233.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.1 MB in the end (delta: 134.0 MB). Peak memory consumption was 134.0 MB. Max. memory is 11.5 GB. * Witness Printer took 8.41 ms. Allocated memory is still 1.2 GB. Free memory is still 936.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}] [L630] COND FALSE !(a == 0) VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}] [L631] p = a VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L644] p = a VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L645] COND TRUE \read(flag) VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L646] EXPR p->h VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=3] [L646] COND FALSE !(p->h == 1) [L651] EXPR p->h VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 21 error locations. UNSAFE Result, 3.1s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 151 SDtfs, 302 SDslu, 151 SDs, 0 SdLazy, 220 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, 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, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1931 SizeOfPredicates, 15 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...