./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_flag-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/list-properties/list_flag-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d8f817036215afe0570c141fddfde907924f85b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:26:19,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:19,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:19,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:19,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:19,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:19,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:19,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:19,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:19,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:19,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:19,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:19,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:19,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:19,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:19,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:19,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:19,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:19,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:19,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:19,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:19,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:19,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:19,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:19,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:19,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:19,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:19,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:19,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:19,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:19,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:19,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:19,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:19,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:19,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:19,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:19,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:19,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:19,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:19,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:19,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:19,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:19,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:19,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:19,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:19,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:19,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:19,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:19,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:19,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:19,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:19,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:19,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:19,992 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:19,993 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:19,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:19,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:19,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:19,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:19,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:19,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:19,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:19,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:19,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:19,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:19,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:19,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:19,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:19,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:19,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-memcleanup) ) 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 -> 8d8f817036215afe0570c141fddfde907924f85b [2020-10-19 18:26:20,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:20,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:20,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:20,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:20,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:20,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-1.i [2020-10-19 18:26:20,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0465d6e0e/66c5e0538edc4426a428a2f3e0ae21e1/FLAGc99691323 [2020-10-19 18:26:20,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:20,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-1.i [2020-10-19 18:26:20,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0465d6e0e/66c5e0538edc4426a428a2f3e0ae21e1/FLAGc99691323 [2020-10-19 18:26:21,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0465d6e0e/66c5e0538edc4426a428a2f3e0ae21e1 [2020-10-19 18:26:21,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:21,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:21,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:21,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:21,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:21,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c05edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21, skipping insertion in model container [2020-10-19 18:26:21,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:21,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:21,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:21,754 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:21,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:21,863 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:21,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21 WrapperNode [2020-10-19 18:26:21,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:21,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:21,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:21,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:21,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (1/1) ... [2020-10-19 18:26:21,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:21,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:21,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:21,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:21,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (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 [2020-10-19 18:26:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:26:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:26:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:26:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:26:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:26:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:26:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:26:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:26:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:26:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:26:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:22,027 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:26:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:26:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:22,399 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:26:22,599 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:22,599 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 18:26:22,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:22 BoogieIcfgContainer [2020-10-19 18:26:22,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:22,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:22,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:22,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:22,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:21" (1/3) ... [2020-10-19 18:26:22,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734d2129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:22, skipping insertion in model container [2020-10-19 18:26:22,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:21" (2/3) ... [2020-10-19 18:26:22,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734d2129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:22, skipping insertion in model container [2020-10-19 18:26:22,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:22" (3/3) ... [2020-10-19 18:26:22,612 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-19 18:26:22,624 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:22,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-19 18:26:22,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-19 18:26:22,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:22,671 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:22,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:22,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:22,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:22,672 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:22,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:22,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-19 18:26:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:26:22,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:22,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:22,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash 884508361, now seen corresponding path program 1 times [2020-10-19 18:26:22,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:22,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139611195] [2020-10-19 18:26:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:22,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139611195] [2020-10-19 18:26:22,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:22,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:22,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238492606] [2020-10-19 18:26:22,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:26:22,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:26:22,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:26:22,981 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-10-19 18:26:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,145 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-19 18:26:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:26:23,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 18:26:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,157 INFO L225 Difference]: With dead ends: 64 [2020-10-19 18:26:23,157 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 18:26:23,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:26:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 18:26:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-19 18:26:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 18:26:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-19 18:26:23,204 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 10 [2020-10-19 18:26:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,205 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-19 18:26:23,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:26:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-19 18:26:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:23,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:26:23,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921759, now seen corresponding path program 1 times [2020-10-19 18:26:23,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256355525] [2020-10-19 18:26:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:23,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256355525] [2020-10-19 18:26:23,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:23,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986800491] [2020-10-19 18:26:23,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:23,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:23,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:23,361 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-10-19 18:26:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,593 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-10-19 18:26:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:23,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:26:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,599 INFO L225 Difference]: With dead ends: 65 [2020-10-19 18:26:23,600 INFO L226 Difference]: Without dead ends: 65 [2020-10-19 18:26:23,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-19 18:26:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-10-19 18:26:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-19 18:26:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-19 18:26:23,618 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2020-10-19 18:26:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,619 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-19 18:26:23,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-19 18:26:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:23,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:26:23,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921760, now seen corresponding path program 1 times [2020-10-19 18:26:23,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583013918] [2020-10-19 18:26:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:23,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583013918] [2020-10-19 18:26:23,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:23,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62310435] [2020-10-19 18:26:23,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:23,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:23,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:23,804 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2020-10-19 18:26:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:24,005 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-19 18:26:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:24,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:26:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:24,009 INFO L225 Difference]: With dead ends: 77 [2020-10-19 18:26:24,009 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 18:26:24,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 18:26:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-19 18:26:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:26:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-19 18:26:24,019 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 11 [2020-10-19 18:26:24,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:24,020 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-19 18:26:24,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-19 18:26:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:26:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:24,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:24,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:26:24,022 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash -590364418, now seen corresponding path program 1 times [2020-10-19 18:26:24,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311694436] [2020-10-19 18:26:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:24,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:24,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:24,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:26:24,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:26:24,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:26:24,115 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:26:24,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:26:24 BoogieIcfgContainer [2020-10-19 18:26:24,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:26:24,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:26:24,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:26:24,134 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:26:24,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:22" (3/4) ... [2020-10-19 18:26:24,137 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:26:24,142 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:26:24,189 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:26:24,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:26:24,192 INFO L168 Benchmark]: Toolchain (without parser) took 2945.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.9 MB in the beginning and 948.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 151.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,193 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:24,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,194 INFO L168 Benchmark]: Boogie Preprocessor took 79.70 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. [2020-10-19 18:26:24,195 INFO L168 Benchmark]: RCFGBuilder took 657.34 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: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,196 INFO L168 Benchmark]: TraceAbstraction took 1529.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.6 MB in the end (delta: 112.9 MB). Peak memory consumption was 112.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,197 INFO L168 Benchmark]: Witness Printer took 56.23 ms. Allocated memory is still 1.2 GB. Free memory is still 948.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:24,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.70 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 657.34 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: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1529.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.6 MB in the end (delta: 112.9 MB). Peak memory consumption was 112.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.23 ms. Allocated memory is still 1.2 GB. Free memory is still 948.6 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L536] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 194 SDslu, 42 SDs, 0 SdLazy, 277 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...