./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 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/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 0.1.24-0ed9222-m [2019-01-14 18:07:53,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 18:07:53,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 18:07:53,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 18:07:53,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 18:07:53,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 18:07:53,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 18:07:53,760 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 18:07:53,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 18:07:53,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 18:07:53,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 18:07:53,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 18:07:53,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 18:07:53,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 18:07:53,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 18:07:53,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 18:07:53,770 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 18:07:53,772 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 18:07:53,774 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 18:07:53,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 18:07:53,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 18:07:53,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 18:07:53,781 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 18:07:53,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 18:07:53,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 18:07:53,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 18:07:53,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 18:07:53,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 18:07:53,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 18:07:53,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 18:07:53,787 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 18:07:53,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 18:07:53,788 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 18:07:53,788 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 18:07:53,789 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 18:07:53,790 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 18:07:53,791 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-14 18:07:53,806 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 18:07:53,806 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 18:07:53,807 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 18:07:53,807 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 18:07:53,808 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 18:07:53,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 18:07:53,808 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-14 18:07:53,809 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-14 18:07:53,810 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-14 18:07:53,810 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 18:07:53,810 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 18:07:53,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 18:07:53,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 18:07:53,810 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 18:07:53,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 18:07:53,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 18:07:53,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 18:07:53,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 18:07:53,811 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 18:07:53,811 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 18:07:53,814 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 [2019-01-14 18:07:53,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 18:07:53,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 18:07:53,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 18:07:53,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 18:07:53,867 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 18:07:53,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-14 18:07:53,941 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9727d2c/fc32937ba3d14a1ab57eb7a3cd38be3b/FLAGc78d20a48 [2019-01-14 18:07:54,445 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 18:07:54,446 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-14 18:07:54,463 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9727d2c/fc32937ba3d14a1ab57eb7a3cd38be3b/FLAGc78d20a48 [2019-01-14 18:07:54,758 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9727d2c/fc32937ba3d14a1ab57eb7a3cd38be3b [2019-01-14 18:07:54,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 18:07:54,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-14 18:07:54,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 18:07:54,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 18:07:54,768 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 18:07:54,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:07:54" (1/1) ... [2019-01-14 18:07:54,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b887ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:54, skipping insertion in model container [2019-01-14 18:07:54,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 06:07:54" (1/1) ... [2019-01-14 18:07:54,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 18:07:54,824 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 18:07:55,172 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:07:55,185 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 18:07:55,261 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 18:07:55,341 INFO L195 MainTranslator]: Completed translation [2019-01-14 18:07:55,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55 WrapperNode [2019-01-14 18:07:55,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 18:07:55,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 18:07:55,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 18:07:55,345 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 18:07:55,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... [2019-01-14 18:07:55,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 18:07:55,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 18:07:55,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 18:07:55,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 18:07:55,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 18:07:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-14 18:07:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 18:07:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-14 18:07:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-14 18:07:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-01-14 18:07:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-14 18:07:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-14 18:07:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-14 18:07:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-14 18:07:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-14 18:07:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-14 18:07:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-14 18:07:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-14 18:07:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-14 18:07:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-14 18:07:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-14 18:07:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-14 18:07:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-14 18:07:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-14 18:07:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-14 18:07:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-14 18:07:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-14 18:07:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-14 18:07:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-14 18:07:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-14 18:07:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-14 18:07:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-14 18:07:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-14 18:07:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-14 18:07:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-14 18:07:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-14 18:07:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-14 18:07:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-14 18:07:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-14 18:07:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-14 18:07:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-14 18:07:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-14 18:07:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-14 18:07:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-14 18:07:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-14 18:07:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-14 18:07:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-14 18:07:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-14 18:07:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-14 18:07:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-14 18:07:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-14 18:07:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 18:07:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 18:07:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-14 18:07:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 18:07:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 18:07:56,245 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 18:07:56,245 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-01-14 18:07:56,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:56 BoogieIcfgContainer [2019-01-14 18:07:56,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 18:07:56,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 18:07:56,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 18:07:56,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 18:07:56,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 06:07:54" (1/3) ... [2019-01-14 18:07:56,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71965b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:07:56, skipping insertion in model container [2019-01-14 18:07:56,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 06:07:55" (2/3) ... [2019-01-14 18:07:56,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71965b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 06:07:56, skipping insertion in model container [2019-01-14 18:07:56,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:56" (3/3) ... [2019-01-14 18:07:56,255 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca_true-valid-memsafety_true-termination.i [2019-01-14 18:07:56,264 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 18:07:56,272 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-01-14 18:07:56,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-01-14 18:07:56,315 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 18:07:56,316 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 18:07:56,316 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-14 18:07:56,316 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 18:07:56,317 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 18:07:56,317 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 18:07:56,317 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 18:07:56,317 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 18:07:56,317 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 18:07:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-01-14 18:07:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 18:07:56,342 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:56,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:56,345 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573627, now seen corresponding path program 1 times [2019-01-14 18:07:56,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:56,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:56,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:56,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:56,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:56,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:56,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-14 18:07:56,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 18:07:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 18:07:56,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-01-14 18:07:56,722 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2019-01-14 18:07:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:57,093 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-01-14 18:07:57,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 18:07:57,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-01-14 18:07:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:57,105 INFO L225 Difference]: With dead ends: 30 [2019-01-14 18:07:57,106 INFO L226 Difference]: Without dead ends: 27 [2019-01-14 18:07:57,107 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 [2019-01-14 18:07:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-14 18:07:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-01-14 18:07:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-14 18:07:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-01-14 18:07:57,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-01-14 18:07:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:57,142 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-01-14 18:07:57,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 18:07:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-01-14 18:07:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 18:07:57,143 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:57,144 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:57,144 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:57,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1006573628, now seen corresponding path program 1 times [2019-01-14 18:07:57,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:57,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:57,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:57,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:57,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:57,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:57,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-01-14 18:07:57,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-14 18:07:57,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-14 18:07:57,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-01-14 18:07:57,643 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2019-01-14 18:07:57,966 WARN L181 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-01-14 18:07:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:58,224 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-01-14 18:07:58,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-14 18:07:58,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-01-14 18:07:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:58,232 INFO L225 Difference]: With dead ends: 47 [2019-01-14 18:07:58,232 INFO L226 Difference]: Without dead ends: 47 [2019-01-14 18:07:58,233 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 [2019-01-14 18:07:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-01-14 18:07:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2019-01-14 18:07:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-01-14 18:07:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-01-14 18:07:58,242 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2019-01-14 18:07:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:58,242 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-01-14 18:07:58,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-14 18:07:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-01-14 18:07:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 18:07:58,243 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:58,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:58,244 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1513386306, now seen corresponding path program 1 times [2019-01-14 18:07:58,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:58,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:58,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:58,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:58,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:58,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-01-14 18:07:58,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-14 18:07:58,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-14 18:07:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-01-14 18:07:58,520 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2019-01-14 18:07:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:58,810 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-01-14 18:07:58,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-14 18:07:58,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-01-14 18:07:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:58,815 INFO L225 Difference]: With dead ends: 50 [2019-01-14 18:07:58,815 INFO L226 Difference]: Without dead ends: 50 [2019-01-14 18:07:58,817 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 [2019-01-14 18:07:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-01-14 18:07:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2019-01-14 18:07:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-14 18:07:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-01-14 18:07:58,822 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2019-01-14 18:07:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:58,823 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-01-14 18:07:58,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-14 18:07:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-01-14 18:07:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 18:07:58,824 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:58,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:58,824 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 51778827, now seen corresponding path program 1 times [2019-01-14 18:07:58,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:58,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:58,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:58,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:58,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:58,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 18:07:58,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 18:07:58,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 18:07:58,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 18:07:58,895 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-01-14 18:07:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:58,954 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-01-14 18:07:58,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 18:07:58,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-14 18:07:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:58,957 INFO L225 Difference]: With dead ends: 38 [2019-01-14 18:07:58,957 INFO L226 Difference]: Without dead ends: 38 [2019-01-14 18:07:58,957 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 [2019-01-14 18:07:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-14 18:07:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-01-14 18:07:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-14 18:07:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-01-14 18:07:58,968 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2019-01-14 18:07:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:58,969 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-01-14 18:07:58,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 18:07:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-01-14 18:07:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 18:07:58,971 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:58,971 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:58,971 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash -341248183, now seen corresponding path program 1 times [2019-01-14 18:07:58,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:58,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:58,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:58,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:59,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:59,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 18:07:59,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 18:07:59,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 18:07:59,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 18:07:59,043 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2019-01-14 18:07:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:59,106 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-01-14 18:07:59,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 18:07:59,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-01-14 18:07:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:59,109 INFO L225 Difference]: With dead ends: 30 [2019-01-14 18:07:59,109 INFO L226 Difference]: Without dead ends: 22 [2019-01-14 18:07:59,109 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 [2019-01-14 18:07:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-14 18:07:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-01-14 18:07:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-14 18:07:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-01-14 18:07:59,113 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2019-01-14 18:07:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:07:59,113 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-01-14 18:07:59,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 18:07:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-01-14 18:07:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 18:07:59,114 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:07:59,114 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:07:59,114 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:07:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:07:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1015686468, now seen corresponding path program 1 times [2019-01-14 18:07:59,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:07:59,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:07:59,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:59,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:07:59,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:07:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:07:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:07:59,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 18:07:59,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-01-14 18:07:59,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-01-14 18:07:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-01-14 18:07:59,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-01-14 18:07:59,536 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2019-01-14 18:07:59,858 WARN L181 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-01-14 18:07:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:07:59,995 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-01-14 18:07:59,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-01-14 18:07:59,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-01-14 18:07:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:07:59,996 INFO L225 Difference]: With dead ends: 29 [2019-01-14 18:07:59,997 INFO L226 Difference]: Without dead ends: 20 [2019-01-14 18:07:59,997 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 [2019-01-14 18:07:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-01-14 18:08:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-01-14 18:08:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-14 18:08:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-01-14 18:08:00,001 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2019-01-14 18:08:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:08:00,001 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-01-14 18:08:00,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-01-14 18:08:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-01-14 18:08:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 18:08:00,002 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:08:00,002 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:08:00,003 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:08:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:08:00,003 INFO L82 PathProgramCache]: Analyzing trace with hash -757521030, now seen corresponding path program 1 times [2019-01-14 18:08:00,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:08:00,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:08:00,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:08:00,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:08:00,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:08:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:08:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:08:00,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 18:08:00,383 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 [2019-01-14 18:08:00,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:08:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:08:00,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 18:08:00,556 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-14 18:08:00,558 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 18:08:00,574 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 18:08:00,575 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-01-14 18:08:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:08:01,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 18:08:01,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2019-01-14 18:08:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-01-14 18:08:01,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-01-14 18:08:01,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2019-01-14 18:08:01,192 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 22 states. [2019-01-14 18:08:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:08:02,351 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-01-14 18:08:02,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-01-14 18:08:02,352 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 19 [2019-01-14 18:08:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:08:02,353 INFO L225 Difference]: With dead ends: 26 [2019-01-14 18:08:02,353 INFO L226 Difference]: Without dead ends: 26 [2019-01-14 18:08:02,354 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 [2019-01-14 18:08:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-14 18:08:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-01-14 18:08:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-01-14 18:08:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-01-14 18:08:02,358 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2019-01-14 18:08:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:08:02,358 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-01-14 18:08:02,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-01-14 18:08:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-01-14 18:08:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-01-14 18:08:02,359 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 18:08:02,359 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 18:08:02,359 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-14 18:08:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 18:08:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash -39295938, now seen corresponding path program 2 times [2019-01-14 18:08:02,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 18:08:02,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 18:08:02,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:08:02,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 18:08:02,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 18:08:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 18:08:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:08:02,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 18:08:02,681 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 [2019-01-14 18:08:02,693 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-14 18:08:02,737 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-14 18:08:02,737 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-14 18:08:02,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 18:08:02,776 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-01-14 18:08:02,776 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-14 18:08:02,786 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-14 18:08:02,786 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-01-14 18:08:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 18:08:03,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 18:08:03,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2019-01-14 18:08:03,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-01-14 18:08:03,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-01-14 18:08:03,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2019-01-14 18:08:03,424 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 26 states. [2019-01-14 18:08:03,787 WARN L181 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-01-14 18:08:04,988 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-01-14 18:08:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 18:08:05,239 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-01-14 18:08:05,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-01-14 18:08:05,239 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 24 [2019-01-14 18:08:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 18:08:05,240 INFO L225 Difference]: With dead ends: 30 [2019-01-14 18:08:05,240 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 18:08:05,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2019-01-14 18:08:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 18:08:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 18:08:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 18:08:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 18:08:05,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-01-14 18:08:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 18:08:05,242 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 18:08:05,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-01-14 18:08:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 18:08:05,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 18:08:05,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 06:08:05 BoogieIcfgContainer [2019-01-14 18:08:05,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 18:08:05,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 18:08:05,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 18:08:05,249 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 18:08:05,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 06:07:56" (3/4) ... [2019-01-14 18:08:05,254 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 18:08:05,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-01-14 18:08:05,262 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-01-14 18:08:05,262 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-01-14 18:08:05,262 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-01-14 18:08:05,262 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-01-14 18:08:05,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-01-14 18:08:05,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-14 18:08:05,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-14 18:08:05,324 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 18:08:05,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 18:08:05,327 INFO L168 Benchmark]: Toolchain (without parser) took 10564.54 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 290.5 MB). Free memory was 954.0 MB in the beginning and 1.3 GB in the end (delta: -328.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:08:05,328 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 18:08:05,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.45 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. [2019-01-14 18:08:05,329 INFO L168 Benchmark]: Boogie Preprocessor took 158.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -214.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2019-01-14 18:08:05,329 INFO L168 Benchmark]: RCFGBuilder took 744.16 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. [2019-01-14 18:08:05,330 INFO L168 Benchmark]: TraceAbstraction took 9000.24 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 132.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -178.2 MB). Peak memory consumption was 351.6 MB. Max. memory is 11.5 GB. [2019-01-14 18:08:05,331 INFO L168 Benchmark]: Witness Printer took 76.08 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: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB. [2019-01-14 18:08:05,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 578.45 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 158.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -214.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 744.16 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 9000.24 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 132.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -178.2 MB). Peak memory consumption was 351.6 MB. Max. memory is 11.5 GB. * Witness Printer took 76.08 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: 3.0 MB). Peak memory consumption was 3.0 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, 8.9s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 4.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 212 SDslu, 709 SDs, 0 SdLazy, 641 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 6.0s 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, 3.4s 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...