./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.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 707f24c72c63346ec05641b1665aeeecec8225e6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:43:43,016 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:43,018 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:43,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:43,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:43,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:43,033 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:43,042 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:43,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:43,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:43,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:43,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:43,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:43,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:43,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:43,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:43,052 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:43,054 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:43,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:43,058 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:43,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:43,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:43,064 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:43,064 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:43,065 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:43,066 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:43,067 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:43,068 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:43,069 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:43,070 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:43,070 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:43,071 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:43,071 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:43,071 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:43,072 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:43,074 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:43,074 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:43,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:43,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:43,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:43,090 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:43,092 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:43,092 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:43,092 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:43,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:43,092 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:43,092 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:43,093 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:43,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:43,095 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:43,095 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:43,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:43,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:43,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:43,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:43,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:43,096 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:43,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:43,098 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:43,098 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:43,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 707f24c72c63346ec05641b1665aeeecec8225e6 [2018-11-28 22:43:43,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:43,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:43,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:43,177 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:43,177 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:43,179 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:43,251 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eea5178/6941b94630424091a33691057ceabba7/FLAGfd337764a [2018-11-28 22:43:43,737 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:43,738 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:43,752 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eea5178/6941b94630424091a33691057ceabba7/FLAGfd337764a [2018-11-28 22:43:44,052 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eea5178/6941b94630424091a33691057ceabba7 [2018-11-28 22:43:44,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:44,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:44,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:44,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:44,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:44,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5503ad97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44, skipping insertion in model container [2018-11-28 22:43:44,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:44,130 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:44,513 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:44,527 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:44,570 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:44,635 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:44,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44 WrapperNode [2018-11-28 22:43:44,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:44,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:44,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:44,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:44,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (1/1) ... [2018-11-28 22:43:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:44,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:44,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:44,800 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:44,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (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 [2018-11-28 22:43:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 22:43:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 22:43:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2018-11-28 22:43:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 22:43:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 22:43:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:43:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:43:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:43:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:43:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:43:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:43:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:43:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:43:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:43:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:43:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:43:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:43:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:43:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:43:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:43:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:43:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:43:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:43:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:43:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:43:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:43:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:43:44,879 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:43:44,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:43:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:43:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:43:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:43:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:43:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:43:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:43:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:43:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:43:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:45,459 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:45,459 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 22:43:45,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:45 BoogieIcfgContainer [2018-11-28 22:43:45,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:45,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:45,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:45,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:45,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:44" (1/3) ... [2018-11-28 22:43:45,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d1ab4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:45, skipping insertion in model container [2018-11-28 22:43:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:44" (2/3) ... [2018-11-28 22:43:45,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d1ab4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:45, skipping insertion in model container [2018-11-28 22:43:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:45" (3/3) ... [2018-11-28 22:43:45,470 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:45,478 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:45,486 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 22:43:45,502 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 22:43:45,528 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:45,529 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:45,529 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:45,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:45,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:45,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:45,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:45,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:45,531 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 22:43:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:45,570 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:45,571 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:45,573 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:45,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:45,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573627, now seen corresponding path program 1 times [2018-11-28 22:43:45,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:45,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:45,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:45,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:45,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:45,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:43:45,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 22:43:45,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 22:43:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:43:45,884 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2018-11-28 22:43:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:46,726 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-28 22:43:46,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:43:46,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-28 22:43:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:46,739 INFO L225 Difference]: With dead ends: 30 [2018-11-28 22:43:46,739 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 22:43:46,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-28 22:43:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 22:43:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-11-28 22:43:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 22:43:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 22:43:46,777 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-11-28 22:43:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:46,778 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 22:43:46,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 22:43:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-28 22:43:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:46,779 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:46,779 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:46,779 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:46,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573628, now seen corresponding path program 1 times [2018-11-28 22:43:46,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:46,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:46,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:46,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:47,093 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-11-28 22:43:47,524 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-28 22:43:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:47,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:47,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 22:43:47,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 22:43:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 22:43:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:43:47,564 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2018-11-28 22:43:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:47,958 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-11-28 22:43:47,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 22:43:47,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-28 22:43:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:47,960 INFO L225 Difference]: With dead ends: 47 [2018-11-28 22:43:47,960 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 22:43:47,962 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-28 22:43:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 22:43:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2018-11-28 22:43:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 22:43:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 22:43:47,971 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2018-11-28 22:43:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:47,971 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 22:43:47,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 22:43:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 22:43:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:47,973 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:47,973 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:47,973 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:47,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:47,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1513386306, now seen corresponding path program 1 times [2018-11-28 22:43:47,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:47,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:47,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:47,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:47,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:48,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:48,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 22:43:48,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 22:43:48,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 22:43:48,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:43:48,261 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2018-11-28 22:43:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:48,573 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2018-11-28 22:43:48,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 22:43:48,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-11-28 22:43:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:48,575 INFO L225 Difference]: With dead ends: 50 [2018-11-28 22:43:48,575 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 22:43:48,575 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-11-28 22:43:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 22:43:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2018-11-28 22:43:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 22:43:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-28 22:43:48,581 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2018-11-28 22:43:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:48,581 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-28 22:43:48,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 22:43:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-28 22:43:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:43:48,582 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:48,582 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:48,582 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:48,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:48,583 INFO L82 PathProgramCache]: Analyzing trace with hash 51778827, now seen corresponding path program 1 times [2018-11-28 22:43:48,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:48,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:48,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:48,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:48,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:48,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:48,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 22:43:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 22:43:48,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:48,672 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-28 22:43:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:48,740 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-28 22:43:48,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:43:48,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 22:43:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:48,745 INFO L225 Difference]: With dead ends: 38 [2018-11-28 22:43:48,745 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 22:43:48,745 INFO L631 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 [2018-11-28 22:43:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 22:43:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-11-28 22:43:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 22:43:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-11-28 22:43:48,756 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2018-11-28 22:43:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:48,757 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-11-28 22:43:48,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 22:43:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-11-28 22:43:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:43:48,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:48,759 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:48,759 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:48,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash -341248183, now seen corresponding path program 1 times [2018-11-28 22:43:48,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:48,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:48,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:48,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:48,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:48,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:43:48,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:43:48,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:43:48,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:48,843 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2018-11-28 22:43:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:48,911 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-11-28 22:43:48,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:43:48,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-28 22:43:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:48,913 INFO L225 Difference]: With dead ends: 30 [2018-11-28 22:43:48,913 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 22:43:48,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 22:43:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 22:43:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 22:43:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-28 22:43:48,918 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-11-28 22:43:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:48,918 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-28 22:43:48,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:43:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-28 22:43:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:43:48,919 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:48,919 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:48,920 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:48,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1015686468, now seen corresponding path program 1 times [2018-11-28 22:43:48,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:48,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:48,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:48,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:49,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:49,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-28 22:43:49,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 22:43:49,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 22:43:49,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-28 22:43:49,299 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2018-11-28 22:43:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:49,870 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-28 22:43:49,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 22:43:49,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-28 22:43:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:49,872 INFO L225 Difference]: With dead ends: 29 [2018-11-28 22:43:49,872 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 22:43:49,873 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 22:43:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 22:43:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 22:43:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 22:43:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-28 22:43:49,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2018-11-28 22:43:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:49,877 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-28 22:43:49,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 22:43:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-28 22:43:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:43:49,878 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:49,878 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:49,878 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:49,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash -757521030, now seen corresponding path program 1 times [2018-11-28 22:43:49,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:49,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:49,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:49,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:49,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:50,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:50,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:50,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:50,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:50,353 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-28 22:43:50,355 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:50,368 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:50,369 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-11-28 22:43:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:50,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:50,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2018-11-28 22:43:50,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 22:43:50,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 22:43:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2018-11-28 22:43:50,886 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 22 states. [2018-11-28 22:43:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:51,990 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-28 22:43:51,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 22:43:51,992 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 19 [2018-11-28 22:43:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:51,993 INFO L225 Difference]: With dead ends: 26 [2018-11-28 22:43:51,993 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 22:43:51,994 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2018-11-28 22:43:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 22:43:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-28 22:43:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 22:43:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-28 22:43:51,998 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-11-28 22:43:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:51,998 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-28 22:43:51,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 22:43:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-28 22:43:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 22:43:51,999 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:51,999 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:52,000 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:52,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:52,000 INFO L82 PathProgramCache]: Analyzing trace with hash -39295938, now seen corresponding path program 2 times [2018-11-28 22:43:52,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:52,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:52,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:52,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:52,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:52,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:52,412 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:52,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 22:43:52,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 22:43:52,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 22:43:52,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:57,011 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-28 22:43:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:57,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:57,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2018-11-28 22:43:57,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 22:43:57,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 22:43:57,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=407, Unknown=1, NotChecked=0, Total=462 [2018-11-28 22:43:57,144 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 22 states. [2018-11-28 22:43:57,408 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-11-28 22:43:57,726 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-11-28 22:43:58,339 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2018-11-28 22:43:58,534 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2018-11-28 22:43:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:58,574 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-28 22:43:58,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 22:43:58,575 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 24 [2018-11-28 22:43:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:58,576 INFO L225 Difference]: With dead ends: 25 [2018-11-28 22:43:58,576 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 22:43:58,577 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=190, Invalid=931, Unknown=1, NotChecked=0, Total=1122 [2018-11-28 22:43:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 22:43:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 22:43:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 22:43:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 22:43:58,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-28 22:43:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:58,579 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 22:43:58,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 22:43:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 22:43:58,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 22:43:58,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:58 BoogieIcfgContainer [2018-11-28 22:43:58,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:58,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:58,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:58,584 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:58,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:45" (3/4) ... [2018-11-28 22:43:58,588 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 22:43:58,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 22:43:58,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2018-11-28 22:43:58,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 22:43:58,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 22:43:58,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 22:43:58,600 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-28 22:43:58,600 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 22:43:58,601 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 22:43:58,651 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:58,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:58,653 INFO L168 Benchmark]: Toolchain (without parser) took 14595.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 954.0 MB in the beginning and 880.4 MB in the end (delta: 73.6 MB). Peak memory consumption was 275.0 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,657 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:58,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.04 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 932.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,659 INFO L168 Benchmark]: Boogie Preprocessor took 161.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,659 INFO L168 Benchmark]: RCFGBuilder took 661.90 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,660 INFO L168 Benchmark]: TraceAbstraction took 13122.70 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 888.3 MB in the end (delta: 184.5 MB). Peak memory consumption was 260.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,661 INFO L168 Benchmark]: Witness Printer took 67.66 ms. Allocated memory is still 1.2 GB. Free memory was 888.3 MB in the beginning and 880.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:58,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 577.04 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 932.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 161.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 661.90 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13122.70 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 888.3 MB in the end (delta: 184.5 MB). Peak memory consumption was 260.5 MB. Max. memory is 11.5 GB. * Witness Printer took 67.66 ms. Allocated memory is still 1.2 GB. Free memory was 888.3 MB in the beginning and 880.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: 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 6 procedures, 34 locations, 3 error locations. SAFE Result, 13.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 4.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 190 SDslu, 687 SDs, 0 SdLazy, 553 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 171 ConstructedInterpolants, 2 QuantifiedInterpolants, 30815 SizeOfPredicates, 17 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 4/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...