./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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/array-memsafety/openbsd_cbzero-alloca-2.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 822411a57a10ce043cb0121fce52bdc7e9506783 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:04:56,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:04:56,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:04:56,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:04:56,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:04:56,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:04:56,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:04:56,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:04:56,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:04:56,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:04:56,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:04:56,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:04:56,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:04:56,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:04:56,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:04:56,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:04:56,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:04:57,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:04:57,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:04:57,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:04:57,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:04:57,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:04:57,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:04:57,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:04:57,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:04:57,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:04:57,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:04:57,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:04:57,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:04:57,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:04:57,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:04:57,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:04:57,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:04:57,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:04:57,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:04:57,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:04:57,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:04:57,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:04:57,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:04:57,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:04:57,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:04:57,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:04:57,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:04:57,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:04:57,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:04:57,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:04:57,040 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:04:57,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:04:57,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:04:57,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:04:57,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:04:57,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:04:57,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:04:57,042 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:04:57,042 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:04:57,043 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:04:57,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:04:57,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:04:57,043 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:04:57,044 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:04:57,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:04:57,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:04:57,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:04:57,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:04:57,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:04:57,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:04:57,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:04:57,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:04:57,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:04:57,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:04:57,047 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-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 -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2019-11-28 20:04:57,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:04:57,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:04:57,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:04:57,393 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:04:57,393 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:04:57,394 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2019-11-28 20:04:57,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949f26a89/e47c81aeb74f44e48a972fad518e5535/FLAGffddfd390 [2019-11-28 20:04:57,960 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:04:57,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2019-11-28 20:04:57,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949f26a89/e47c81aeb74f44e48a972fad518e5535/FLAGffddfd390 [2019-11-28 20:04:58,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949f26a89/e47c81aeb74f44e48a972fad518e5535 [2019-11-28 20:04:58,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:04:58,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:04:58,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:58,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:04:58,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:04:58,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4801b5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58, skipping insertion in model container [2019-11-28 20:04:58,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:04:58,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:04:58,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:58,699 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:04:58,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:04:58,831 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:04:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58 WrapperNode [2019-11-28 20:04:58,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:04:58,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:04:58,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:04:58,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:04:58,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (1/1) ... [2019-11-28 20:04:58,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:04:58,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:04:58,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:04:58,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:04:58,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (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 [2019-11-28 20:04:58,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:04:58,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:04:58,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:04:58,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:04:58,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:04:58,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:04:58,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:04:58,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2019-11-28 20:04:58,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:04:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:04:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:04:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:04:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:04:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:04:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:04:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:04:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:04:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:04:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:04:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:04:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:04:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:04:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:04:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:04:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:04:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:04:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:04:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:04:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:04:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:04:58,960 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:04:58,961 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:04:58,962 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:04:58,963 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:04:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:04:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:04:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:04:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:04:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:04:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:04:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:04:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:04:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:04:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:04:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:04:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:04:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:04:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:04:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:04:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:04:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:04:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:04:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:04:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:04:58,969 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:04:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:04:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:04:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:04:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:04:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:04:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:04:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:04:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:04:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:04:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:04:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:04:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:04:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:04:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:04:59,457 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:04:59,458 INFO L287 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-28 20:04:59,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:59 BoogieIcfgContainer [2019-11-28 20:04:59,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:04:59,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:04:59,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:04:59,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:04:59,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:04:58" (1/3) ... [2019-11-28 20:04:59,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271ebfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:59, skipping insertion in model container [2019-11-28 20:04:59,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:04:58" (2/3) ... [2019-11-28 20:04:59,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271ebfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:04:59, skipping insertion in model container [2019-11-28 20:04:59,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:59" (3/3) ... [2019-11-28 20:04:59,476 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2019-11-28 20:04:59,486 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:04:59,500 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 20:04:59,510 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 20:04:59,531 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:04:59,531 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:04:59,531 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:04:59,531 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:04:59,532 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:04:59,532 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:04:59,532 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:04:59,532 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:04:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-28 20:04:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:04:59,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:04:59,554 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:04:59,555 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:04:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:04:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2019-11-28 20:04:59,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:04:59,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875820600] [2019-11-28 20:04:59,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:04:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:04:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:04:59,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875820600] [2019-11-28 20:04:59,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:04:59,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:04:59,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371329876] [2019-11-28 20:04:59,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:04:59,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:04:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:04:59,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:04:59,777 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-11-28 20:04:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:04:59,958 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-28 20:04:59,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:04:59,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 20:04:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:04:59,970 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:04:59,970 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 20:04:59,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:04:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 20:05:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 20:05:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:05:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-28 20:05:00,009 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2019-11-28 20:05:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:00,009 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-28 20:05:00,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:05:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-28 20:05:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:05:00,010 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:00,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:00,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2019-11-28 20:05:00,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:00,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992086384] [2019-11-28 20:05:00,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:00,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992086384] [2019-11-28 20:05:00,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:00,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 20:05:00,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842710812] [2019-11-28 20:05:00,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:05:00,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:05:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:05:00,138 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2019-11-28 20:05:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:00,291 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-28 20:05:00,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:05:00,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-28 20:05:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:00,293 INFO L225 Difference]: With dead ends: 21 [2019-11-28 20:05:00,293 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 20:05:00,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:05:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 20:05:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-28 20:05:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 20:05:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-28 20:05:00,299 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2019-11-28 20:05:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:00,299 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-28 20:05:00,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:05:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-28 20:05:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:05:00,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:00,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:00,301 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2019-11-28 20:05:00,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:00,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184360783] [2019-11-28 20:05:00,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:00,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184360783] [2019-11-28 20:05:00,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:00,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:05:00,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672544604] [2019-11-28 20:05:00,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:05:00,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:05:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:00,458 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2019-11-28 20:05:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:00,670 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-28 20:05:00,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:05:00,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-28 20:05:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:00,677 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:05:00,678 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 20:05:00,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:05:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 20:05:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-28 20:05:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:05:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-28 20:05:00,694 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2019-11-28 20:05:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:00,695 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 20:05:00,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:05:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-11-28 20:05:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:05:00,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:00,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:00,697 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2019-11-28 20:05:00,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:00,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327829936] [2019-11-28 20:05:00,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:00,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327829936] [2019-11-28 20:05:00,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:00,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 20:05:00,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285932360] [2019-11-28 20:05:00,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:05:00,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:05:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:00,899 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 8 states. [2019-11-28 20:05:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:01,142 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-28 20:05:01,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 20:05:01,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-28 20:05:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:01,144 INFO L225 Difference]: With dead ends: 34 [2019-11-28 20:05:01,144 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 20:05:01,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:05:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 20:05:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-11-28 20:05:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:05:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-28 20:05:01,155 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2019-11-28 20:05:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:01,155 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-28 20:05:01,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:05:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-28 20:05:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:05:01,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:01,157 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:01,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:01,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2019-11-28 20:05:01,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:01,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237902672] [2019-11-28 20:05:01,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:01,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237902672] [2019-11-28 20:05:01,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:01,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-28 20:05:01,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510914416] [2019-11-28 20:05:01,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:05:01,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:01,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:05:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:05:01,279 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 10 states. [2019-11-28 20:05:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:01,562 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-28 20:05:01,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:05:01,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-28 20:05:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:01,564 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:05:01,564 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 20:05:01,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:05:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 20:05:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-28 20:05:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:05:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-11-28 20:05:01,573 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2019-11-28 20:05:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:01,575 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-11-28 20:05:01,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:05:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-11-28 20:05:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:05:01,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:01,576 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:01,576 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2019-11-28 20:05:01,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:01,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505776887] [2019-11-28 20:05:01,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:01,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505776887] [2019-11-28 20:05:01,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180510339] [2019-11-28 20:05:01,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:01,873 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:05:01,881 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:01,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:01,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-11-28 20:05:01,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883780957] [2019-11-28 20:05:01,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:05:01,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:05:01,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:05:01,947 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 9 states. [2019-11-28 20:05:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:02,213 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-11-28 20:05:02,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:05:02,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-28 20:05:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:02,214 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:05:02,214 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 20:05:02,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:05:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 20:05:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-11-28 20:05:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 20:05:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-11-28 20:05:02,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2019-11-28 20:05:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:02,220 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-11-28 20:05:02,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:05:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-11-28 20:05:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:05:02,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:02,221 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:02,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:02,422 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:02,423 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2019-11-28 20:05:02,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:02,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875296724] [2019-11-28 20:05:02,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:02,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875296724] [2019-11-28 20:05:02,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129549320] [2019-11-28 20:05:02,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:02,748 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-28 20:05:02,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:02,798 INFO L377 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 [2019-11-28 20:05:02,799 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:02,811 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:02,813 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:02,813 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:12 [2019-11-28 20:05:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:03,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:03,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-11-28 20:05:03,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328045698] [2019-11-28 20:05:03,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 20:05:03,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 20:05:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:05:03,034 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 20 states. [2019-11-28 20:05:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:03,526 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-11-28 20:05:03,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 20:05:03,526 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2019-11-28 20:05:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:03,527 INFO L225 Difference]: With dead ends: 40 [2019-11-28 20:05:03,527 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 20:05:03,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-11-28 20:05:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 20:05:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-11-28 20:05:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:05:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-28 20:05:03,534 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2019-11-28 20:05:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:03,534 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-28 20:05:03,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 20:05:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-28 20:05:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 20:05:03,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:03,536 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:03,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:03,739 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2019-11-28 20:05:03,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:03,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366180622] [2019-11-28 20:05:03,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 20:05:03,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366180622] [2019-11-28 20:05:03,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:05:03,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:05:03,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33709174] [2019-11-28 20:05:03,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:05:03,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:05:03,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:05:03,838 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2019-11-28 20:05:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:03,910 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-28 20:05:03,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:05:03,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-11-28 20:05:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:03,911 INFO L225 Difference]: With dead ends: 38 [2019-11-28 20:05:03,912 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 20:05:03,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:05:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 20:05:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 20:05:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:05:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-11-28 20:05:03,915 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2019-11-28 20:05:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:03,915 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-11-28 20:05:03,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:05:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-11-28 20:05:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 20:05:03,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:05:03,916 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:05:03,916 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cbzeroErr1REQUIRES_VIOLATION, cbzeroErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-28 20:05:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:05:03,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2019-11-28 20:05:03,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:05:03,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748381217] [2019-11-28 20:05:03,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:05:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:05:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:04,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748381217] [2019-11-28 20:05:04,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274829971] [2019-11-28 20:05:04,242 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:04,348 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:05:04,348 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:05:04,349 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-28 20:05:04,352 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:05:04,363 INFO L377 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 [2019-11-28 20:05:04,363 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:05:04,369 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:05:04,370 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:05:04,370 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:12 [2019-11-28 20:05:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:05:04,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:05:04,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2019-11-28 20:05:04,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553780864] [2019-11-28 20:05:04,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 20:05:04,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:05:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 20:05:04,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2019-11-28 20:05:04,728 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 25 states. [2019-11-28 20:05:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:05:05,775 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 20:05:05,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 20:05:05,776 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 22 [2019-11-28 20:05:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:05:05,777 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:05:05,777 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:05:05,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2019-11-28 20:05:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:05:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:05:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:05:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:05:05,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-28 20:05:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:05:05,779 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:05:05,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 20:05:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:05:05,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:05:05,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:05:05,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:05:05 BoogieIcfgContainer [2019-11-28 20:05:05,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:05:05,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:05:05,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:05:05,988 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:05:05,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:04:59" (3/4) ... [2019-11-28 20:05:05,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:05:05,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 20:05:05,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 20:05:05,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 20:05:06,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-11-28 20:05:06,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 20:05:06,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:05:06,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 20:05:06,048 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:05:06,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:05:06,050 INFO L168 Benchmark]: Toolchain (without parser) took 7763.37 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 292.0 MB). Free memory was 956.3 MB in the beginning and 1.3 GB in the end (delta: -305.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:06,054 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:06,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:06,055 INFO L168 Benchmark]: Boogie Preprocessor took 56.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:06,056 INFO L168 Benchmark]: RCFGBuilder took 569.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:05:06,057 INFO L168 Benchmark]: TraceAbstraction took 6524.10 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -225.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:06,057 INFO L168 Benchmark]: Witness Printer took 61.22 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:05:06,062 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 544.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 569.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6524.10 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -225.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 61.22 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 3 error locations. Result: SAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 275 SDslu, 327 SDs, 0 SdLazy, 1075 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, 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, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 2 QuantifiedInterpolants, 23045 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...