./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c783d9214012f4bff6327cd9f7b291047ddaff08 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:42:22,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:42:22,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:42:22,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:42:22,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:42:22,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:42:22,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:42:22,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:42:22,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:42:22,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:42:22,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:42:22,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:42:22,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:42:22,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:42:22,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:42:22,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:42:22,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:42:22,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:42:22,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:42:22,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:42:22,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:42:22,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:42:22,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:42:22,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:42:22,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:42:22,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:42:22,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:42:22,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:42:22,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:42:22,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:42:22,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:42:22,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:42:22,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:42:22,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:42:22,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:42:22,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:42:22,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:42:22,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:42:22,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:42:22,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:42:22,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:42:22,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-29 19:42:22,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:42:22,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:42:22,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:42:22,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:42:22,514 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:42:22,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:42:22,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:42:22,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:42:22,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:42:22,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:42:22,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:42:22,517 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:42:22,517 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:42:22,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:42:22,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:42:22,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:42:22,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:42:22,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:42:22,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:42:22,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:42:22,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:42:22,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:42:22,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:42:22,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:42:22,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:42:22,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:42:22,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:42:22,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2020-11-29 19:42:22,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:42:22,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:42:22,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:42:22,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:42:22,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:42:22,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-11-29 19:42:23,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/data/002deccd3/ccd405e4d99245089377077682300327/FLAG3499f9eab [2020-11-29 19:42:23,693 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:42:23,694 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-11-29 19:42:23,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/data/002deccd3/ccd405e4d99245089377077682300327/FLAG3499f9eab [2020-11-29 19:42:23,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/data/002deccd3/ccd405e4d99245089377077682300327 [2020-11-29 19:42:23,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:42:23,993 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:42:23,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:42:23,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:42:24,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:42:24,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:42:23" (1/1) ... [2020-11-29 19:42:24,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58eedcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24, skipping insertion in model container [2020-11-29 19:42:24,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:42:23" (1/1) ... [2020-11-29 19:42:24,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:42:24,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:42:24,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:42:24,523 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:42:24,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:42:24,682 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:42:24,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24 WrapperNode [2020-11-29 19:42:24,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:42:24,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:42:24,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:42:24,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:42:24,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... [2020-11-29 19:42:24,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:42:24,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:42:24,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:42:24,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:42:24,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:42:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:42:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:42:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 19:42:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:42:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 19:42:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 19:42:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 19:42:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 19:42:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 19:42:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 19:42:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 19:42:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 19:42:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 19:42:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 19:42:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 19:42:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 19:42:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 19:42:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 19:42:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 19:42:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 19:42:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 19:42:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 19:42:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 19:42:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 19:42:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 19:42:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 19:42:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 19:42:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 19:42:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 19:42:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 19:42:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 19:42:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 19:42:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 19:42:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 19:42:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 19:42:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:42:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:42:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:42:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:42:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:42:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:42:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:42:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:42:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:42:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:42:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:42:25,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:42:25,792 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 19:42:25,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:25 BoogieIcfgContainer [2020-11-29 19:42:25,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:42:25,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:42:25,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:42:25,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:42:25,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:42:23" (1/3) ... [2020-11-29 19:42:25,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a609441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:42:25, skipping insertion in model container [2020-11-29 19:42:25,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:24" (2/3) ... [2020-11-29 19:42:25,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a609441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:42:25, skipping insertion in model container [2020-11-29 19:42:25,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:25" (3/3) ... [2020-11-29 19:42:25,805 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2020-11-29 19:42:25,818 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:42:25,823 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2020-11-29 19:42:25,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2020-11-29 19:42:25,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:42:25,857 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:42:25,857 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:42:25,857 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:42:25,857 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:42:25,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:42:25,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:42:25,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:42:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-11-29 19:42:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:42:25,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:25,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:25,887 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash 15534572, now seen corresponding path program 1 times [2020-11-29 19:42:25,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:25,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071618994] [2020-11-29 19:42:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071618994] [2020-11-29 19:42:26,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:26,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:42:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310145240] [2020-11-29 19:42:26,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:42:26,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:42:26,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:42:26,185 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-11-29 19:42:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:26,684 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-11-29 19:42:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:42:26,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 19:42:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:26,710 INFO L225 Difference]: With dead ends: 138 [2020-11-29 19:42:26,710 INFO L226 Difference]: Without dead ends: 134 [2020-11-29 19:42:26,711 INFO L677 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 [2020-11-29 19:42:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-29 19:42:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2020-11-29 19:42:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 19:42:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-11-29 19:42:26,782 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 7 [2020-11-29 19:42:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:26,782 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-11-29 19:42:26,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:42:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-11-29 19:42:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:42:26,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:26,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:26,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:42:26,785 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:26,786 INFO L82 PathProgramCache]: Analyzing trace with hash 15534573, now seen corresponding path program 1 times [2020-11-29 19:42:26,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:26,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544011883] [2020-11-29 19:42:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:26,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544011883] [2020-11-29 19:42:26,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:26,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:42:26,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255538787] [2020-11-29 19:42:26,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:42:26,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:42:26,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:42:26,927 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 4 states. [2020-11-29 19:42:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:27,281 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2020-11-29 19:42:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:42:27,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 19:42:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:27,283 INFO L225 Difference]: With dead ends: 132 [2020-11-29 19:42:27,283 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 19:42:27,283 INFO L677 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 [2020-11-29 19:42:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 19:42:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 104. [2020-11-29 19:42:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-29 19:42:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2020-11-29 19:42:27,292 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 7 [2020-11-29 19:42:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:27,293 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2020-11-29 19:42:27,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:42:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2020-11-29 19:42:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:42:27,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:27,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:27,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:42:27,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:27,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2024757771, now seen corresponding path program 1 times [2020-11-29 19:42:27,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:27,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448905203] [2020-11-29 19:42:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:27,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:27,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448905203] [2020-11-29 19:42:27,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:27,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:42:27,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921868600] [2020-11-29 19:42:27,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:42:27,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:42:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:42:27,462 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 5 states. [2020-11-29 19:42:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:27,764 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-29 19:42:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:42:27,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 19:42:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:27,766 INFO L225 Difference]: With dead ends: 107 [2020-11-29 19:42:27,766 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 19:42:27,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 19:42:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-11-29 19:42:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-29 19:42:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-11-29 19:42:27,781 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 12 [2020-11-29 19:42:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:27,782 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-11-29 19:42:27,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:42:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-11-29 19:42:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:42:27,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:27,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:27,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:42:27,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:27,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2024757772, now seen corresponding path program 1 times [2020-11-29 19:42:27,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:27,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138992359] [2020-11-29 19:42:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:27,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138992359] [2020-11-29 19:42:27,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:27,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:42:27,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456911620] [2020-11-29 19:42:27,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:42:27,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:42:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:42:27,954 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 5 states. [2020-11-29 19:42:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:28,349 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-11-29 19:42:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:42:28,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 19:42:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:28,352 INFO L225 Difference]: With dead ends: 135 [2020-11-29 19:42:28,352 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 19:42:28,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 19:42:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2020-11-29 19:42:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 19:42:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-11-29 19:42:28,364 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 12 [2020-11-29 19:42:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:28,365 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-11-29 19:42:28,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:42:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-11-29 19:42:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:42:28,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:28,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:28,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:42:28,366 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:28,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1038052920, now seen corresponding path program 1 times [2020-11-29 19:42:28,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:28,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084351982] [2020-11-29 19:42:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:28,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084351982] [2020-11-29 19:42:28,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:28,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:42:28,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217448712] [2020-11-29 19:42:28,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:42:28,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:42:28,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:42:28,489 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 7 states. [2020-11-29 19:42:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:29,063 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2020-11-29 19:42:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:42:29,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 19:42:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:29,064 INFO L225 Difference]: With dead ends: 189 [2020-11-29 19:42:29,064 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 19:42:29,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:42:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 19:42:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 113. [2020-11-29 19:42:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:42:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-11-29 19:42:29,072 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 15 [2020-11-29 19:42:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:29,073 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-11-29 19:42:29,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:42:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-11-29 19:42:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:42:29,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:29,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:29,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:42:29,074 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1038052921, now seen corresponding path program 1 times [2020-11-29 19:42:29,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:29,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294185381] [2020-11-29 19:42:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:29,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294185381] [2020-11-29 19:42:29,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:29,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:42:29,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473412542] [2020-11-29 19:42:29,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:42:29,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:42:29,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:42:29,203 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-11-29 19:42:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:29,887 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-11-29 19:42:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:42:29,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 19:42:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:29,889 INFO L225 Difference]: With dead ends: 198 [2020-11-29 19:42:29,889 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 19:42:29,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:42:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 19:42:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 105. [2020-11-29 19:42:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-29 19:42:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2020-11-29 19:42:29,912 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 15 [2020-11-29 19:42:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:29,913 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2020-11-29 19:42:29,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:42:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2020-11-29 19:42:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:42:29,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:29,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:29,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:42:29,919 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash -141829353, now seen corresponding path program 1 times [2020-11-29 19:42:29,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:29,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529929516] [2020-11-29 19:42:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:30,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:30,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529929516] [2020-11-29 19:42:30,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:30,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:42:30,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086055329] [2020-11-29 19:42:30,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:42:30,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:42:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:30,062 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand 6 states. [2020-11-29 19:42:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:30,342 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-11-29 19:42:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:42:30,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 19:42:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:30,343 INFO L225 Difference]: With dead ends: 116 [2020-11-29 19:42:30,343 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 19:42:30,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:42:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 19:42:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-11-29 19:42:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-29 19:42:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-11-29 19:42:30,354 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 19 [2020-11-29 19:42:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:30,354 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-11-29 19:42:30,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:42:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-11-29 19:42:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:42:30,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:30,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:30,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:42:30,355 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash -151306315, now seen corresponding path program 1 times [2020-11-29 19:42:30,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:30,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811365865] [2020-11-29 19:42:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:30,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811365865] [2020-11-29 19:42:30,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:30,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:42:30,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751340601] [2020-11-29 19:42:30,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:42:30,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:30,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:42:30,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:30,435 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-11-29 19:42:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:30,858 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2020-11-29 19:42:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:42:30,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 19:42:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:30,860 INFO L225 Difference]: With dead ends: 145 [2020-11-29 19:42:30,860 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 19:42:30,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:42:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 19:42:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 110. [2020-11-29 19:42:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-29 19:42:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-11-29 19:42:30,866 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 20 [2020-11-29 19:42:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:30,866 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-11-29 19:42:30,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:42:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-11-29 19:42:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:42:30,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:30,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:30,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:42:30,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash -151306314, now seen corresponding path program 1 times [2020-11-29 19:42:30,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:30,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710852208] [2020-11-29 19:42:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:31,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710852208] [2020-11-29 19:42:31,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:31,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:42:31,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989140449] [2020-11-29 19:42:31,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:42:31,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:31,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:42:31,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:31,012 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 6 states. [2020-11-29 19:42:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:31,460 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2020-11-29 19:42:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:42:31,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 19:42:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:31,461 INFO L225 Difference]: With dead ends: 154 [2020-11-29 19:42:31,461 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 19:42:31,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:42:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 19:42:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 109. [2020-11-29 19:42:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 19:42:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-11-29 19:42:31,466 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 20 [2020-11-29 19:42:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:31,466 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-11-29 19:42:31,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:42:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-11-29 19:42:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:42:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:31,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:31,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:42:31,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2120124380, now seen corresponding path program 1 times [2020-11-29 19:42:31,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:31,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337886902] [2020-11-29 19:42:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:31,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337886902] [2020-11-29 19:42:31,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379904474] [2020-11-29 19:42:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:31,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:42:31,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:31,882 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-11-29 19:42:31,883 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:42:31,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:42:31,966 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:42:31,967 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 19:42:32,074 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-11-29 19:42:32,075 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2020-11-29 19:42:32,076 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:42:32,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:42:32,079 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:42:32,079 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2020-11-29 19:42:32,106 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 19:42:32,107 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:42:32,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:42:32,109 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:42:32,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 19:42:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:32,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:42:32,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-11-29 19:42:32,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960196247] [2020-11-29 19:42:32,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:42:32,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:32,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:42:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:42:32,128 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 5 states. [2020-11-29 19:42:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:32,339 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-11-29 19:42:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:42:32,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 19:42:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:32,341 INFO L225 Difference]: With dead ends: 138 [2020-11-29 19:42:32,342 INFO L226 Difference]: Without dead ends: 138 [2020-11-29 19:42:32,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:42:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-29 19:42:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-11-29 19:42:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 19:42:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-11-29 19:42:32,362 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 22 [2020-11-29 19:42:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:32,362 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-11-29 19:42:32,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:42:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-11-29 19:42:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:42:32,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:32,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:32,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 19:42:32,578 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1297715506, now seen corresponding path program 1 times [2020-11-29 19:42:32,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:32,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318842848] [2020-11-29 19:42:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:32,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:32,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318842848] [2020-11-29 19:42:32,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:32,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 19:42:32,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473665419] [2020-11-29 19:42:32,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:42:32,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:42:32,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:42:32,752 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 9 states. [2020-11-29 19:42:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:33,284 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2020-11-29 19:42:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:42:33,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-29 19:42:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:33,287 INFO L225 Difference]: With dead ends: 140 [2020-11-29 19:42:33,287 INFO L226 Difference]: Without dead ends: 140 [2020-11-29 19:42:33,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:42:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-29 19:42:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 113. [2020-11-29 19:42:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:42:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-11-29 19:42:33,295 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 23 [2020-11-29 19:42:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:33,296 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-11-29 19:42:33,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:42:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-11-29 19:42:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:42:33,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:33,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:33,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:42:33,302 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:33,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1297715507, now seen corresponding path program 1 times [2020-11-29 19:42:33,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:33,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691840972] [2020-11-29 19:42:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:33,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691840972] [2020-11-29 19:42:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 19:42:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343677825] [2020-11-29 19:42:33,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:42:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:42:33,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:42:33,459 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 8 states. [2020-11-29 19:42:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:34,142 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2020-11-29 19:42:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:42:34,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-29 19:42:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:34,144 INFO L225 Difference]: With dead ends: 163 [2020-11-29 19:42:34,144 INFO L226 Difference]: Without dead ends: 163 [2020-11-29 19:42:34,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:42:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-29 19:42:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 115. [2020-11-29 19:42:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-29 19:42:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-11-29 19:42:34,150 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 23 [2020-11-29 19:42:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:34,150 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-11-29 19:42:34,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:42:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-11-29 19:42:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:42:34,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:34,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:34,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:42:34,152 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2145672081, now seen corresponding path program 1 times [2020-11-29 19:42:34,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:34,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049888186] [2020-11-29 19:42:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:34,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049888186] [2020-11-29 19:42:34,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:34,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:42:34,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654568480] [2020-11-29 19:42:34,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:42:34,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:34,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:42:34,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:42:34,335 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 10 states. [2020-11-29 19:42:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:34,932 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-11-29 19:42:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:42:34,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-29 19:42:34,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:34,933 INFO L225 Difference]: With dead ends: 120 [2020-11-29 19:42:34,933 INFO L226 Difference]: Without dead ends: 120 [2020-11-29 19:42:34,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:42:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-11-29 19:42:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2020-11-29 19:42:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 19:42:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-11-29 19:42:34,938 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 23 [2020-11-29 19:42:34,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:34,938 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-11-29 19:42:34,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:42:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-11-29 19:42:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:42:34,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:34,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:34,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:42:34,939 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:34,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2145672080, now seen corresponding path program 1 times [2020-11-29 19:42:34,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:34,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099063732] [2020-11-29 19:42:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:35,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099063732] [2020-11-29 19:42:35,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:35,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:42:35,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800470669] [2020-11-29 19:42:35,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:42:35,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:42:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:42:35,170 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 10 states. [2020-11-29 19:42:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:35,737 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-11-29 19:42:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:42:35,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-29 19:42:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:35,739 INFO L225 Difference]: With dead ends: 119 [2020-11-29 19:42:35,739 INFO L226 Difference]: Without dead ends: 119 [2020-11-29 19:42:35,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:42:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-29 19:42:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2020-11-29 19:42:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:42:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-11-29 19:42:35,743 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 23 [2020-11-29 19:42:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:35,744 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-11-29 19:42:35,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:42:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-11-29 19:42:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 19:42:35,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:35,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:35,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:42:35,753 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:35,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:35,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1241290495, now seen corresponding path program 1 times [2020-11-29 19:42:35,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:35,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695984149] [2020-11-29 19:42:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:42:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:35,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695984149] [2020-11-29 19:42:35,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:35,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:42:35,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946917850] [2020-11-29 19:42:35,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:42:35,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:42:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:42:35,850 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 5 states. [2020-11-29 19:42:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:36,094 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2020-11-29 19:42:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:42:36,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-29 19:42:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:36,096 INFO L225 Difference]: With dead ends: 129 [2020-11-29 19:42:36,096 INFO L226 Difference]: Without dead ends: 129 [2020-11-29 19:42:36,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:42:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-29 19:42:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-11-29 19:42:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:42:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2020-11-29 19:42:36,100 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 26 [2020-11-29 19:42:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:36,100 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2020-11-29 19:42:36,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:42:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2020-11-29 19:42:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:42:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:36,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:36,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:42:36,102 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 19:42:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -148961045, now seen corresponding path program 1 times [2020-11-29 19:42:36,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:36,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760639551] [2020-11-29 19:42:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:42:36,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:42:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:42:36,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:42:36,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:42:36,163 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:42:36,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:42:36,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:42:36 BoogieIcfgContainer [2020-11-29 19:42:36,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:42:36,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:42:36,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:42:36,223 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:42:36,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:25" (3/4) ... [2020-11-29 19:42:36,226 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:42:36,292 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b4847fd9-57a8-436f-8e17-1d04376a6272/bin/uautomizer/witness.graphml [2020-11-29 19:42:36,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:42:36,298 INFO L168 Benchmark]: Toolchain (without parser) took 12303.66 ms. Allocated memory was 92.3 MB in the beginning and 188.7 MB in the end (delta: 96.5 MB). Free memory was 56.8 MB in the beginning and 76.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,299 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 92.3 MB. Free memory is still 74.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:36,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.55 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 57.5 MB in the end (delta: -892.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,302 INFO L168 Benchmark]: Boogie Preprocessor took 94.91 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 54.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,303 INFO L168 Benchmark]: RCFGBuilder took 1009.43 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 54.8 MB in the beginning and 60.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,303 INFO L168 Benchmark]: TraceAbstraction took 10425.90 ms. Allocated memory was 117.4 MB in the beginning and 188.7 MB in the end (delta: 71.3 MB). Free memory was 60.4 MB in the beginning and 78.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,303 INFO L168 Benchmark]: Witness Printer took 73.35 ms. Allocated memory is still 188.7 MB. Free memory was 78.7 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:36,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 92.3 MB. Free memory is still 74.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.55 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 57.5 MB in the end (delta: -892.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.91 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 54.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1009.43 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 54.8 MB in the beginning and 60.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10425.90 ms. Allocated memory was 117.4 MB in the beginning and 188.7 MB in the end (delta: 71.3 MB). Free memory was 60.4 MB in the beginning and 78.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. * Witness Printer took 73.35 ms. Allocated memory is still 188.7 MB. Free memory was 78.7 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1001] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1003] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1019] x->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1020] head = x VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1040] x = head VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1043] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=1] [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->next={-1:0}] [L1049] x = x->next [L1050] COND TRUE \read(*x) VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1052] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=0] [L1052] COND TRUE x->data != 1 [L1053] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-simple-white-blue-2.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 115 locations, 49 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1030 SDtfs, 1567 SDslu, 1654 SDs, 0 SdLazy, 4688 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 468 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 29968 SizeOfPredicates, 7 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...