./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 2e94e6aa 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 0.1.24-2e94e6a [2019-01-01 17:13:10,650 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 17:13:10,652 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 17:13:10,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 17:13:10,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 17:13:10,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 17:13:10,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 17:13:10,678 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 17:13:10,680 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 17:13:10,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 17:13:10,685 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 17:13:10,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 17:13:10,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 17:13:10,690 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 17:13:10,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 17:13:10,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 17:13:10,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 17:13:10,703 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 17:13:10,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 17:13:10,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 17:13:10,708 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 17:13:10,710 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 17:13:10,712 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 17:13:10,713 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 17:13:10,713 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 17:13:10,714 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 17:13:10,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 17:13:10,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 17:13:10,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 17:13:10,718 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 17:13:10,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 17:13:10,719 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 17:13:10,719 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 17:13:10,719 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 17:13:10,721 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 17:13:10,722 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 17:13:10,722 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 17:13:10,737 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 17:13:10,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 17:13:10,738 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 17:13:10,738 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 17:13:10,739 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 17:13:10,739 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 17:13:10,739 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 17:13:10,739 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 17:13:10,739 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 17:13:10,739 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 17:13:10,741 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 17:13:10,742 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 17:13:10,742 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 17:13:10,742 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 17:13:10,742 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 17:13:10,742 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 17:13:10,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:13:10,744 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 17:13:10,744 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 17:13:10,744 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 17:13:10,744 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 17:13:10,745 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 [2019-01-01 17:13:10,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 17:13:10,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 17:13:10,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 17:13:10,816 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 17:13:10,816 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 17:13:10,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:10,875 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a88716c/82f266882a54479a80e4304e16a4c447/FLAGcfbca33b8 [2019-01-01 17:13:11,409 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 17:13:11,410 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:11,426 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a88716c/82f266882a54479a80e4304e16a4c447/FLAGcfbca33b8 [2019-01-01 17:13:11,706 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a88716c/82f266882a54479a80e4304e16a4c447 [2019-01-01 17:13:11,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 17:13:11,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 17:13:11,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 17:13:11,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 17:13:11,717 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 17:13:11,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:13:11" (1/1) ... [2019-01-01 17:13:11,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4947b3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:11, skipping insertion in model container [2019-01-01 17:13:11,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:13:11" (1/1) ... [2019-01-01 17:13:11,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 17:13:11,795 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 17:13:12,205 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:13:12,228 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 17:13:12,363 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:13:12,429 INFO L195 MainTranslator]: Completed translation [2019-01-01 17:13:12,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12 WrapperNode [2019-01-01 17:13:12,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 17:13:12,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 17:13:12,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 17:13:12,431 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 17:13:12,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... [2019-01-01 17:13:12,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 17:13:12,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 17:13:12,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 17:13:12,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 17:13:12,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:13:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 17:13:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 17:13:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-01 17:13:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-01 17:13:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-01-01 17:13:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 17:13:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-01 17:13:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-01 17:13:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-01 17:13:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-01 17:13:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-01 17:13:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-01 17:13:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-01 17:13:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-01 17:13:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-01 17:13:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-01 17:13:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-01 17:13:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-01 17:13:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-01 17:13:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-01 17:13:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-01 17:13:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-01 17:13:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-01 17:13:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-01 17:13:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-01 17:13:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-01 17:13:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-01 17:13:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-01 17:13:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-01 17:13:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-01 17:13:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-01 17:13:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-01 17:13:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-01 17:13:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-01 17:13:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-01 17:13:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-01 17:13:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-01 17:13:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-01 17:13:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-01 17:13:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-01 17:13:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-01 17:13:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-01 17:13:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-01 17:13:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-01 17:13:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-01 17:13:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-01 17:13:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-01 17:13:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-01 17:13:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-01 17:13:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-01 17:13:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-01 17:13:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-01 17:13:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-01 17:13:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-01 17:13:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-01 17:13:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-01 17:13:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-01 17:13:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-01 17:13:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-01 17:13:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-01 17:13:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-01 17:13:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-01 17:13:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-01 17:13:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-01 17:13:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-01 17:13:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-01 17:13:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-01 17:13:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 17:13:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 17:13:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 17:13:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 17:13:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 17:13:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 17:13:13,144 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 17:13:13,144 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-01 17:13:13,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:13 BoogieIcfgContainer [2019-01-01 17:13:13,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 17:13:13,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 17:13:13,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 17:13:13,150 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 17:13:13,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 05:13:11" (1/3) ... [2019-01-01 17:13:13,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68774589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:13:13, skipping insertion in model container [2019-01-01 17:13:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:13:12" (2/3) ... [2019-01-01 17:13:13,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68774589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:13:13, skipping insertion in model container [2019-01-01 17:13:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:13" (3/3) ... [2019-01-01 17:13:13,153 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-01 17:13:13,163 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 17:13:13,173 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-01-01 17:13:13,191 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-01-01 17:13:13,221 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 17:13:13,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 17:13:13,222 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 17:13:13,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 17:13:13,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 17:13:13,222 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 17:13:13,222 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 17:13:13,222 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 17:13:13,223 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 17:13:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-01-01 17:13:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-01 17:13:13,257 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:13,258 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:13,260 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:13,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573627, now seen corresponding path program 1 times [2019-01-01 17:13:13,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:13,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:13,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:13,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:13,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:13,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:13,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-01 17:13:13,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-01 17:13:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-01 17:13:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-01-01 17:13:13,633 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2019-01-01 17:13:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:14,041 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-01-01 17:13:14,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-01 17:13:14,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-01-01 17:13:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:14,056 INFO L225 Difference]: With dead ends: 30 [2019-01-01 17:13:14,056 INFO L226 Difference]: Without dead ends: 27 [2019-01-01 17:13:14,058 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-01-01 17:13:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-01 17:13:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-01-01 17:13:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-01 17:13:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-01-01 17:13:14,100 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-01-01 17:13:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:14,100 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-01-01 17:13:14,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-01 17:13:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-01-01 17:13:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-01 17:13:14,102 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:14,102 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:14,103 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573628, now seen corresponding path program 1 times [2019-01-01 17:13:14,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:14,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:14,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:14,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:14,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:14,701 WARN L181 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2019-01-01 17:13:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:14,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:14,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-01-01 17:13:14,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-01 17:13:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-01 17:13:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-01-01 17:13:14,811 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2019-01-01 17:13:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:15,181 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-01-01 17:13:15,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-01 17:13:15,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-01-01 17:13:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:15,184 INFO L225 Difference]: With dead ends: 47 [2019-01-01 17:13:15,185 INFO L226 Difference]: Without dead ends: 47 [2019-01-01 17:13:15,186 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-01-01 17:13:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-01-01 17:13:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2019-01-01 17:13:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-01-01 17:13:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-01-01 17:13:15,196 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2019-01-01 17:13:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:15,196 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-01-01 17:13:15,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-01 17:13:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-01-01 17:13:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-01 17:13:15,198 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:15,198 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:15,198 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1513386306, now seen corresponding path program 1 times [2019-01-01 17:13:15,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:15,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:15,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:15,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:15,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:15,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-01-01 17:13:15,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-01 17:13:15,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-01 17:13:15,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-01-01 17:13:15,510 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2019-01-01 17:13:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:15,787 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-01-01 17:13:15,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-01 17:13:15,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-01-01 17:13:15,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:15,790 INFO L225 Difference]: With dead ends: 50 [2019-01-01 17:13:15,791 INFO L226 Difference]: Without dead ends: 50 [2019-01-01 17:13:15,792 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 [2019-01-01 17:13:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-01-01 17:13:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2019-01-01 17:13:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-01 17:13:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-01-01 17:13:15,797 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2019-01-01 17:13:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:15,797 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-01-01 17:13:15,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-01 17:13:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-01-01 17:13:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-01 17:13:15,798 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:15,799 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:15,799 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:15,800 INFO L82 PathProgramCache]: Analyzing trace with hash 51778827, now seen corresponding path program 1 times [2019-01-01 17:13:15,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:15,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:15,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:15,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:15,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:15,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-01 17:13:15,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 17:13:15,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 17:13:15,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 17:13:15,904 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-01-01 17:13:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:15,966 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-01-01 17:13:15,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 17:13:15,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-01 17:13:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:15,969 INFO L225 Difference]: With dead ends: 38 [2019-01-01 17:13:15,970 INFO L226 Difference]: Without dead ends: 38 [2019-01-01 17:13:15,970 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 [2019-01-01 17:13:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-01 17:13:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-01-01 17:13:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-01 17:13:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-01-01 17:13:15,981 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2019-01-01 17:13:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:15,982 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-01-01 17:13:15,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 17:13:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-01-01 17:13:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-01 17:13:15,984 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:15,984 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:15,985 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:15,985 INFO L82 PathProgramCache]: Analyzing trace with hash -341248183, now seen corresponding path program 1 times [2019-01-01 17:13:15,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:15,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:15,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:15,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:16,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:16,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 17:13:16,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-01 17:13:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 17:13:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:16,175 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2019-01-01 17:13:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:16,251 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-01-01 17:13:16,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 17:13:16,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-01-01 17:13:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:16,253 INFO L225 Difference]: With dead ends: 30 [2019-01-01 17:13:16,253 INFO L226 Difference]: Without dead ends: 22 [2019-01-01 17:13:16,254 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 17:13:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-01 17:13:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-01-01 17:13:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-01 17:13:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-01-01 17:13:16,258 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2019-01-01 17:13:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-01-01 17:13:16,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-01 17:13:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-01-01 17:13:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-01 17:13:16,259 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:16,260 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:16,261 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1015686468, now seen corresponding path program 1 times [2019-01-01 17:13:16,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:16,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:16,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:16,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:16,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:16,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 17:13:16,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-01-01 17:13:16,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-01-01 17:13:16,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-01-01 17:13:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-01-01 17:13:16,585 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2019-01-01 17:13:16,920 WARN L181 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-01-01 17:13:17,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:17,044 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-01-01 17:13:17,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-01-01 17:13:17,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-01-01 17:13:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:17,046 INFO L225 Difference]: With dead ends: 29 [2019-01-01 17:13:17,047 INFO L226 Difference]: Without dead ends: 20 [2019-01-01 17:13:17,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-01-01 17:13:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-01-01 17:13:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-01-01 17:13:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-01 17:13:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-01-01 17:13:17,055 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2019-01-01 17:13:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:17,055 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-01-01 17:13:17,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-01-01 17:13:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-01-01 17:13:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-01 17:13:17,058 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:17,058 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:17,058 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -757521030, now seen corresponding path program 1 times [2019-01-01 17:13:17,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:17,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:17,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:17,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:17,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:17,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 17:13:17,433 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 [2019-01-01 17:13:17,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:17,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 17:13:17,630 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-01 17:13:17,632 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-01 17:13:17,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:17,653 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-01-01 17:13:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:18,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 17:13:18,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2019-01-01 17:13:18,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-01-01 17:13:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-01-01 17:13:18,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2019-01-01 17:13:18,341 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 22 states. [2019-01-01 17:13:18,745 WARN L181 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-01-01 17:13:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:19,229 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-01-01 17:13:19,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-01-01 17:13:19,230 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 19 [2019-01-01 17:13:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:19,231 INFO L225 Difference]: With dead ends: 26 [2019-01-01 17:13:19,231 INFO L226 Difference]: Without dead ends: 26 [2019-01-01 17:13:19,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2019-01-01 17:13:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-01 17:13:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-01-01 17:13:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-01 17:13:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-01 17:13:19,236 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2019-01-01 17:13:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:19,236 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-01 17:13:19,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-01-01 17:13:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-01 17:13:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-01-01 17:13:19,237 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:13:19,237 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:13:19,238 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 17:13:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:13:19,238 INFO L82 PathProgramCache]: Analyzing trace with hash -39295938, now seen corresponding path program 2 times [2019-01-01 17:13:19,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:13:19,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:13:19,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:19,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:13:19,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:13:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 17:13:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:19,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 17:13:19,808 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 [2019-01-01 17:13:19,817 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-01 17:13:19,856 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-01 17:13:19,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-01 17:13:19,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 17:13:19,885 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-01 17:13:19,886 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-01 17:13:19,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-01 17:13:19,892 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-01-01 17:13:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 17:13:20,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 17:13:20,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2019-01-01 17:13:20,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-01-01 17:13:20,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-01-01 17:13:20,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2019-01-01 17:13:20,511 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 26 states. [2019-01-01 17:13:20,868 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-01-01 17:13:22,184 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-01-01 17:13:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 17:13:22,393 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-01-01 17:13:22,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-01-01 17:13:22,393 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 24 [2019-01-01 17:13:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 17:13:22,394 INFO L225 Difference]: With dead ends: 30 [2019-01-01 17:13:22,394 INFO L226 Difference]: Without dead ends: 0 [2019-01-01 17:13:22,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2019-01-01 17:13:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-01 17:13:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-01 17:13:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-01 17:13:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 17:13:22,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-01-01 17:13:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 17:13:22,396 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 17:13:22,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-01-01 17:13:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-01 17:13:22,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-01 17:13:22,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 05:13:22 BoogieIcfgContainer [2019-01-01 17:13:22,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 17:13:22,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 17:13:22,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 17:13:22,403 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 17:13:22,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:13:13" (3/4) ... [2019-01-01 17:13:22,409 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-01 17:13:22,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-01-01 17:13:22,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-01-01 17:13:22,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-01-01 17:13:22,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-01-01 17:13:22,417 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-01-01 17:13:22,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-01-01 17:13:22,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-01 17:13:22,422 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-01 17:13:22,478 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 17:13:22,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 17:13:22,479 INFO L168 Benchmark]: Toolchain (without parser) took 10769.25 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 304.1 MB). Free memory was 950.0 MB in the beginning and 1.3 GB in the end (delta: -336.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:13:22,481 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:13:22,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:22,485 INFO L168 Benchmark]: Boogie Preprocessor took 86.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:13:22,487 INFO L168 Benchmark]: RCFGBuilder took 627.69 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:22,487 INFO L168 Benchmark]: TraceAbstraction took 9256.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -227.5 MB). Peak memory consumption was 344.5 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:22,488 INFO L168 Benchmark]: Witness Printer took 74.89 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-01-01 17:13:22,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 717.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 627.69 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9256.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -227.5 MB). Peak memory consumption was 344.5 MB. Max. memory is 11.5 GB. * Witness Printer took 74.89 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 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, 9.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 212 SDslu, 709 SDs, 0 SdLazy, 641 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 6.4s 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, 4.0s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 32954 SizeOfPredicates, 19 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 2/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...