./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/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_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/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 0.2.0-69874e2 [2020-12-01 14:56:11,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:56:11,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:56:11,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:56:11,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:56:11,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:56:11,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:56:11,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:56:11,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:56:11,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:56:11,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:56:11,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:56:11,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:56:11,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:56:11,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:56:11,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:56:11,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:56:11,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:56:12,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:56:12,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:56:12,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:56:12,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:56:12,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:56:12,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:56:12,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:56:12,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:56:12,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:56:12,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:56:12,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:56:12,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:56:12,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:56:12,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:56:12,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:56:12,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:56:12,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:56:12,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:56:12,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:56:12,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:56:12,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:56:12,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:56:12,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:56:12,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-12-01 14:56:12,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:56:12,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:56:12,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:56:12,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:56:12,096 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:56:12,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:56:12,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:56:12,097 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 14:56:12,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:56:12,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:56:12,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:56:12,099 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 14:56:12,100 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 14:56:12,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:56:12,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 14:56:12,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:56:12,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:56:12,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:56:12,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:56:12,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:56:12,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:56:12,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:56:12,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:56:12,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:56:12,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:56:12,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:56:12,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:56:12,103 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_ca06a003-1483-475a-a4d7-67ad8d817ee1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2020-12-01 14:56:12,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:56:12,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:56:12,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:56:12,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:56:12,464 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:56:12,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-12-01 14:56:12,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/data/71e8d8231/e24856636885486ebb65d5b5bbe699fe/FLAGd114a8b40 [2020-12-01 14:56:13,121 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:56:13,122 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-12-01 14:56:13,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/data/71e8d8231/e24856636885486ebb65d5b5bbe699fe/FLAGd114a8b40 [2020-12-01 14:56:13,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/data/71e8d8231/e24856636885486ebb65d5b5bbe699fe [2020-12-01 14:56:13,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:56:13,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 14:56:13,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:56:13,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:56:13,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:56:13,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:13,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ac039e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13, skipping insertion in model container [2020-12-01 14:56:13,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:13,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:56:13,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:56:13,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:56:13,871 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:56:13,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:56:13,994 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:56:13,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13 WrapperNode [2020-12-01 14:56:13,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:56:13,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:56:13,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:56:13,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:56:14,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... [2020-12-01 14:56:14,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:56:14,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:56:14,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:56:14,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:56:14,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/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 [2020-12-01 14:56:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 14:56:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:56:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 14:56:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 14:56:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-12-01 14:56:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-12-01 14:56:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-12-01 14:56:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-12-01 14:56:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-12-01 14:56:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-12-01 14:56:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-12-01 14:56:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-12-01 14:56:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-12-01 14:56:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-12-01 14:56:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-12-01 14:56:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-12-01 14:56:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-12-01 14:56:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-12-01 14:56:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-12-01 14:56:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-12-01 14:56:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-12-01 14:56:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-12-01 14:56:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-12-01 14:56:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-12-01 14:56:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-12-01 14:56:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-12-01 14:56:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-12-01 14:56:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-12-01 14:56:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-12-01 14:56:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-12-01 14:56:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-12-01 14:56:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-12-01 14:56:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-12-01 14:56:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-12-01 14:56:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-12-01 14:56:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-12-01 14:56:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-12-01 14:56:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-12-01 14:56:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-12-01 14:56:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-12-01 14:56:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-12-01 14:56:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-12-01 14:56:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-12-01 14:56:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-12-01 14:56:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-12-01 14:56:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-12-01 14:56:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-12-01 14:56:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-12-01 14:56:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-12-01 14:56:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-12-01 14:56:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-12-01 14:56:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-12-01 14:56:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-12-01 14:56:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-12-01 14:56:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-12-01 14:56:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-12-01 14:56:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-12-01 14:56:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-12-01 14:56:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-12-01 14:56:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-12-01 14:56:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-12-01 14:56:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-12-01 14:56:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-12-01 14:56:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-12-01 14:56:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-12-01 14:56:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-12-01 14:56:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-12-01 14:56:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-12-01 14:56:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-12-01 14:56:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-12-01 14:56:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-12-01 14:56:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-12-01 14:56:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-12-01 14:56:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-12-01 14:56:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-12-01 14:56:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-12-01 14:56:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-12-01 14:56:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-12-01 14:56:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-12-01 14:56:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-12-01 14:56:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-12-01 14:56:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-12-01 14:56:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-12-01 14:56:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-12-01 14:56:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-12-01 14:56:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-12-01 14:56:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-12-01 14:56:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-12-01 14:56:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-12-01 14:56:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-12-01 14:56:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-12-01 14:56:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-12-01 14:56:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-12-01 14:56:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-12-01 14:56:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-12-01 14:56:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-12-01 14:56:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-12-01 14:56:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-12-01 14:56:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-12-01 14:56:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-12-01 14:56:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-12-01 14:56:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-12-01 14:56:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-12-01 14:56:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-12-01 14:56:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-12-01 14:56:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-12-01 14:56:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-12-01 14:56:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-12-01 14:56:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-12-01 14:56:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-12-01 14:56:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-12-01 14:56:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 14:56:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:56:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 14:56:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 14:56:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 14:56:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:56:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 14:56:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 14:56:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:56:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 14:56:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:56:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:56:14,902 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:56:14,903 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-01 14:56:14,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:56:14 BoogieIcfgContainer [2020-12-01 14:56:14,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:56:14,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:56:14,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:56:14,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:56:14,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:56:13" (1/3) ... [2020-12-01 14:56:14,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53637d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:56:14, skipping insertion in model container [2020-12-01 14:56:14,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:56:13" (2/3) ... [2020-12-01 14:56:14,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53637d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:56:14, skipping insertion in model container [2020-12-01 14:56:14,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:56:14" (3/3) ... [2020-12-01 14:56:14,923 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2020-12-01 14:56:14,938 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:56:14,942 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2020-12-01 14:56:14,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2020-12-01 14:56:14,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:56:14,975 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 14:56:14,975 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:56:14,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:56:14,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:56:14,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:56:14,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:56:14,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:56:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-12-01 14:56:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 14:56:15,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:15,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:15,001 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]=== [2020-12-01 14:56:15,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash 15534572, now seen corresponding path program 1 times [2020-12-01 14:56:15,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:15,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96340562] [2020-12-01 14:56:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:15,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96340562] [2020-12-01 14:56:15,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:15,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:56:15,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086117396] [2020-12-01 14:56:15,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:56:15,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:15,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:56:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:56:15,286 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-12-01 14:56:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:15,711 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-12-01 14:56:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:56:15,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 14:56:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:15,735 INFO L225 Difference]: With dead ends: 138 [2020-12-01 14:56:15,735 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 14:56:15,743 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 [2020-12-01 14:56:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 14:56:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2020-12-01 14:56:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-01 14:56:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-12-01 14:56:15,804 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 7 [2020-12-01 14:56:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:15,804 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-12-01 14:56:15,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:56:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-12-01 14:56:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 14:56:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:15,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:15,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:56:15,806 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]=== [2020-12-01 14:56:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash 15534573, now seen corresponding path program 1 times [2020-12-01 14:56:15,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:15,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962869128] [2020-12-01 14:56:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:15,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962869128] [2020-12-01 14:56:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:56:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745986791] [2020-12-01 14:56:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:56:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:15,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:56:15,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:56:15,914 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 4 states. [2020-12-01 14:56:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:16,227 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2020-12-01 14:56:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:56:16,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 14:56:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:16,229 INFO L225 Difference]: With dead ends: 132 [2020-12-01 14:56:16,229 INFO L226 Difference]: Without dead ends: 132 [2020-12-01 14:56:16,230 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 [2020-12-01 14:56:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-01 14:56:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 104. [2020-12-01 14:56:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-01 14:56:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2020-12-01 14:56:16,239 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 7 [2020-12-01 14:56:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:16,240 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2020-12-01 14:56:16,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:56:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2020-12-01 14:56:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:56:16,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:16,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:16,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:56:16,241 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]=== [2020-12-01 14:56:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2024757771, now seen corresponding path program 1 times [2020-12-01 14:56:16,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:16,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447540665] [2020-12-01 14:56:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:16,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447540665] [2020-12-01 14:56:16,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:16,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:56:16,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692340686] [2020-12-01 14:56:16,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:56:16,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:56:16,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:56:16,336 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 5 states. [2020-12-01 14:56:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:16,560 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-12-01 14:56:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:56:16,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 14:56:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:16,562 INFO L225 Difference]: With dead ends: 107 [2020-12-01 14:56:16,562 INFO L226 Difference]: Without dead ends: 107 [2020-12-01 14:56:16,563 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 [2020-12-01 14:56:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-01 14:56:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-12-01 14:56:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 14:56:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-01 14:56:16,571 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 12 [2020-12-01 14:56:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:16,571 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-01 14:56:16,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:56:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-01 14:56:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:56:16,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:16,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:56:16,573 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]=== [2020-12-01 14:56:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2024757772, now seen corresponding path program 1 times [2020-12-01 14:56:16,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:16,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533394936] [2020-12-01 14:56:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533394936] [2020-12-01 14:56:16,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:16,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:56:16,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642418793] [2020-12-01 14:56:16,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:56:16,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:16,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:56:16,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:56:16,721 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 5 states. [2020-12-01 14:56:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:17,041 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-12-01 14:56:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:56:17,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 14:56:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:17,044 INFO L225 Difference]: With dead ends: 135 [2020-12-01 14:56:17,044 INFO L226 Difference]: Without dead ends: 135 [2020-12-01 14:56:17,045 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 [2020-12-01 14:56:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-01 14:56:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2020-12-01 14:56:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-01 14:56:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-12-01 14:56:17,053 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 12 [2020-12-01 14:56:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:17,054 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-12-01 14:56:17,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:56:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-12-01 14:56:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:56:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:17,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:17,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:56:17,055 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]=== [2020-12-01 14:56:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1038052920, now seen corresponding path program 1 times [2020-12-01 14:56:17,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:17,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934753482] [2020-12-01 14:56:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:17,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934753482] [2020-12-01 14:56:17,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:17,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 14:56:17,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757712062] [2020-12-01 14:56:17,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 14:56:17,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:17,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 14:56:17,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:56:17,187 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 7 states. [2020-12-01 14:56:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:17,716 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2020-12-01 14:56:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 14:56:17,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-01 14:56:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:17,719 INFO L225 Difference]: With dead ends: 189 [2020-12-01 14:56:17,719 INFO L226 Difference]: Without dead ends: 189 [2020-12-01 14:56:17,720 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 [2020-12-01 14:56:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-01 14:56:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 113. [2020-12-01 14:56:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-01 14:56:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-12-01 14:56:17,740 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 15 [2020-12-01 14:56:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:17,741 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-12-01 14:56:17,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 14:56:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-12-01 14:56:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:56:17,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:17,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:17,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:56:17,742 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]=== [2020-12-01 14:56:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1038052921, now seen corresponding path program 1 times [2020-12-01 14:56:17,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:17,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361013953] [2020-12-01 14:56:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:17,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361013953] [2020-12-01 14:56:17,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:17,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 14:56:17,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457614683] [2020-12-01 14:56:17,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 14:56:17,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:17,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 14:56:17,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:56:17,905 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-12-01 14:56:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:18,568 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-12-01 14:56:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 14:56:18,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-01 14:56:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:18,570 INFO L225 Difference]: With dead ends: 198 [2020-12-01 14:56:18,570 INFO L226 Difference]: Without dead ends: 198 [2020-12-01 14:56:18,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-01 14:56:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-01 14:56:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 105. [2020-12-01 14:56:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-01 14:56:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2020-12-01 14:56:18,602 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 15 [2020-12-01 14:56:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:18,602 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2020-12-01 14:56:18,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 14:56:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2020-12-01 14:56:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 14:56:18,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:18,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:56:18,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:56:18,604 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]=== [2020-12-01 14:56:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:18,605 INFO L82 PathProgramCache]: Analyzing trace with hash -141829353, now seen corresponding path program 1 times [2020-12-01 14:56:18,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:18,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811850291] [2020-12-01 14:56:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:18,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811850291] [2020-12-01 14:56:18,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:18,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 14:56:18,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621283706] [2020-12-01 14:56:18,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:56:18,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:18,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:56:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:56:18,757 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand 6 states. [2020-12-01 14:56:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:19,009 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-12-01 14:56:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:56:19,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-01 14:56:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:19,010 INFO L225 Difference]: With dead ends: 116 [2020-12-01 14:56:19,010 INFO L226 Difference]: Without dead ends: 116 [2020-12-01 14:56:19,011 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 [2020-12-01 14:56:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-01 14:56:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-12-01 14:56:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-01 14:56:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-12-01 14:56:19,020 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 19 [2020-12-01 14:56:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:19,021 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-12-01 14:56:19,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:56:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-12-01 14:56:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 14:56:19,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:19,022 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] [2020-12-01 14:56:19,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 14:56:19,024 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]=== [2020-12-01 14:56:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:19,024 INFO L82 PathProgramCache]: Analyzing trace with hash -151306315, now seen corresponding path program 1 times [2020-12-01 14:56:19,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:19,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674125819] [2020-12-01 14:56:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:19,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674125819] [2020-12-01 14:56:19,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:19,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 14:56:19,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182631264] [2020-12-01 14:56:19,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:56:19,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:19,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:56:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:56:19,147 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-12-01 14:56:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:19,490 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2020-12-01 14:56:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:56:19,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-01 14:56:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:19,492 INFO L225 Difference]: With dead ends: 145 [2020-12-01 14:56:19,493 INFO L226 Difference]: Without dead ends: 145 [2020-12-01 14:56:19,493 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 [2020-12-01 14:56:19,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-01 14:56:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 110. [2020-12-01 14:56:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-01 14:56:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-12-01 14:56:19,499 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 20 [2020-12-01 14:56:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:19,499 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-12-01 14:56:19,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:56:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-12-01 14:56:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 14:56:19,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:19,501 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] [2020-12-01 14:56:19,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 14:56:19,501 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]=== [2020-12-01 14:56:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash -151306314, now seen corresponding path program 1 times [2020-12-01 14:56:19,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:19,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946801804] [2020-12-01 14:56:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:19,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:19,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946801804] [2020-12-01 14:56:19,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:19,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 14:56:19,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233032487] [2020-12-01 14:56:19,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:56:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:56:19,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:56:19,608 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 6 states. [2020-12-01 14:56:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:19,973 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2020-12-01 14:56:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:56:19,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-01 14:56:19,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:19,975 INFO L225 Difference]: With dead ends: 154 [2020-12-01 14:56:19,976 INFO L226 Difference]: Without dead ends: 154 [2020-12-01 14:56:19,976 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 [2020-12-01 14:56:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-01 14:56:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 109. [2020-12-01 14:56:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-01 14:56:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-12-01 14:56:19,983 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 20 [2020-12-01 14:56:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:19,983 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-12-01 14:56:19,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:56:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-12-01 14:56:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 14:56:19,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:19,990 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] [2020-12-01 14:56:19,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 14:56:19,990 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]=== [2020-12-01 14:56:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2120124380, now seen corresponding path program 1 times [2020-12-01 14:56:19,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:19,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948576329] [2020-12-01 14:56:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:20,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948576329] [2020-12-01 14:56:20,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103524156] [2020-12-01 14:56:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/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 [2020-12-01 14:56:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:20,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 14:56:20,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:56:20,412 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-01 14:56:20,413 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:20,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 14:56:20,455 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:20,456 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-12-01 14:56:20,459 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,479 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-01 14:56:20,480 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,480 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-01 14:56:20,529 INFO L382 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 11 treesize of output 7 [2020-12-01 14:56:20,530 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:20,540 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2020-12-01 14:56:20,619 INFO L382 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 17 treesize of output 9 [2020-12-01 14:56:20,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:20,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:20,627 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 14:56:20,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2020-12-01 14:56:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:20,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:56:20,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-12-01 14:56:20,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13059168] [2020-12-01 14:56:20,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 14:56:20,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:20,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 14:56:20,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-01 14:56:20,659 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 12 states. [2020-12-01 14:56:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:21,260 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2020-12-01 14:56:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 14:56:21,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-12-01 14:56:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:21,264 INFO L225 Difference]: With dead ends: 150 [2020-12-01 14:56:21,264 INFO L226 Difference]: Without dead ends: 150 [2020-12-01 14:56:21,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-01 14:56:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-01 14:56:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 112. [2020-12-01 14:56:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-01 14:56:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-12-01 14:56:21,277 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 22 [2020-12-01 14:56:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:21,277 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-12-01 14:56:21,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 14:56:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-12-01 14:56:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 14:56:21,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:21,281 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] [2020-12-01 14:56:21,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 14:56:21,497 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]=== [2020-12-01 14:56:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2120124381, now seen corresponding path program 1 times [2020-12-01 14:56:21,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:21,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627754693] [2020-12-01 14:56:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:21,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627754693] [2020-12-01 14:56:21,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012026508] [2020-12-01 14:56:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:56:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:21,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-01 14:56:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:56:21,923 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-01 14:56:21,924 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:21,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:21,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:21,931 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 14:56:22,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 14:56:22,052 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-01 14:56:22,055 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,078 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,079 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-01 14:56:22,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 14:56:22,092 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,102 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,102 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-12-01 14:56:22,177 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 14:56:22,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,198 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 14:56:22,199 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,216 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,216 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:36 [2020-12-01 14:56:22,342 INFO L382 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 31 treesize of output 19 [2020-12-01 14:56:22,344 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2020-12-01 14:56:22,363 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 14:56:22,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 14:56:22,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 14:56:22,375 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:20 [2020-12-01 14:56:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:22,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:56:22,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-12-01 14:56:22,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041556959] [2020-12-01 14:56:22,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-01 14:56:22,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:22,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-01 14:56:22,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-12-01 14:56:22,492 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 16 states. [2020-12-01 14:56:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:24,009 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2020-12-01 14:56:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 14:56:24,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-12-01 14:56:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:24,014 INFO L225 Difference]: With dead ends: 180 [2020-12-01 14:56:24,014 INFO L226 Difference]: Without dead ends: 180 [2020-12-01 14:56:24,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-12-01 14:56:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-01 14:56:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 111. [2020-12-01 14:56:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-01 14:56:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-12-01 14:56:24,020 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 22 [2020-12-01 14:56:24,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:24,021 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-12-01 14:56:24,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-01 14:56:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-12-01 14:56:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 14:56:24,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:24,022 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] [2020-12-01 14:56:24,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:56:24,233 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]=== [2020-12-01 14:56:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:24,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1297715506, now seen corresponding path program 1 times [2020-12-01 14:56:24,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:24,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518164339] [2020-12-01 14:56:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:24,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518164339] [2020-12-01 14:56:24,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:24,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 14:56:24,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680362098] [2020-12-01 14:56:24,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 14:56:24,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 14:56:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-01 14:56:24,366 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand 9 states. [2020-12-01 14:56:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:24,797 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-12-01 14:56:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 14:56:24,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-01 14:56:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:24,798 INFO L225 Difference]: With dead ends: 154 [2020-12-01 14:56:24,798 INFO L226 Difference]: Without dead ends: 154 [2020-12-01 14:56:24,799 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 [2020-12-01 14:56:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-01 14:56:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 115. [2020-12-01 14:56:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-01 14:56:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-12-01 14:56:24,803 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 23 [2020-12-01 14:56:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:24,804 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-12-01 14:56:24,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 14:56:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-12-01 14:56:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 14:56:24,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:24,805 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] [2020-12-01 14:56:24,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 14:56:24,805 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]=== [2020-12-01 14:56:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1297715507, now seen corresponding path program 1 times [2020-12-01 14:56:24,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:24,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428527184] [2020-12-01 14:56:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:24,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428527184] [2020-12-01 14:56:24,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:24,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 14:56:24,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028143666] [2020-12-01 14:56:24,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 14:56:24,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 14:56:24,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-01 14:56:24,929 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 8 states. [2020-12-01 14:56:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:25,457 INFO L93 Difference]: Finished difference Result 179 states and 197 transitions. [2020-12-01 14:56:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 14:56:25,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-01 14:56:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:25,459 INFO L225 Difference]: With dead ends: 179 [2020-12-01 14:56:25,459 INFO L226 Difference]: Without dead ends: 179 [2020-12-01 14:56:25,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-01 14:56:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-01 14:56:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2020-12-01 14:56:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-01 14:56:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2020-12-01 14:56:25,464 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 23 [2020-12-01 14:56:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:25,464 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2020-12-01 14:56:25,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 14:56:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2020-12-01 14:56:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 14:56:25,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:25,466 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] [2020-12-01 14:56:25,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 14:56:25,466 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]=== [2020-12-01 14:56:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2145672081, now seen corresponding path program 1 times [2020-12-01 14:56:25,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:25,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651270418] [2020-12-01 14:56:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:25,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651270418] [2020-12-01 14:56:25,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:25,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 14:56:25,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930290815] [2020-12-01 14:56:25,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:56:25,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:56:25,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:56:25,601 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand 10 states. [2020-12-01 14:56:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:26,239 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2020-12-01 14:56:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 14:56:26,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-01 14:56:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:26,241 INFO L225 Difference]: With dead ends: 123 [2020-12-01 14:56:26,241 INFO L226 Difference]: Without dead ends: 123 [2020-12-01 14:56:26,242 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 [2020-12-01 14:56:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-01 14:56:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2020-12-01 14:56:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-01 14:56:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2020-12-01 14:56:26,251 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 23 [2020-12-01 14:56:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:26,251 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2020-12-01 14:56:26,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:56:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2020-12-01 14:56:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 14:56:26,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:26,256 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] [2020-12-01 14:56:26,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 14:56:26,256 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]=== [2020-12-01 14:56:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2145672080, now seen corresponding path program 1 times [2020-12-01 14:56:26,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:26,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224303812] [2020-12-01 14:56:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:26,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224303812] [2020-12-01 14:56:26,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:26,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 14:56:26,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827883621] [2020-12-01 14:56:26,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:56:26,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:26,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:56:26,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:56:26,440 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand 10 states. [2020-12-01 14:56:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:27,070 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-12-01 14:56:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 14:56:27,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-01 14:56:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:27,073 INFO L225 Difference]: With dead ends: 122 [2020-12-01 14:56:27,074 INFO L226 Difference]: Without dead ends: 122 [2020-12-01 14:56:27,077 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 [2020-12-01 14:56:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-01 14:56:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 115. [2020-12-01 14:56:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-01 14:56:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-12-01 14:56:27,082 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 23 [2020-12-01 14:56:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:27,083 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-12-01 14:56:27,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:56:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-12-01 14:56:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 14:56:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:27,084 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] [2020-12-01 14:56:27,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 14:56:27,085 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]=== [2020-12-01 14:56:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1241290495, now seen corresponding path program 1 times [2020-12-01 14:56:27,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:27,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204518339] [2020-12-01 14:56:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:27,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 14:56:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:56:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:56:27,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204518339] [2020-12-01 14:56:27,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:56:27,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 14:56:27,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731095143] [2020-12-01 14:56:27,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:56:27,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:56:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:56:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:56:27,164 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 5 states. [2020-12-01 14:56:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:56:27,383 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2020-12-01 14:56:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:56:27,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-01 14:56:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:56:27,385 INFO L225 Difference]: With dead ends: 135 [2020-12-01 14:56:27,386 INFO L226 Difference]: Without dead ends: 135 [2020-12-01 14:56:27,386 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 [2020-12-01 14:56:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-01 14:56:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2020-12-01 14:56:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-01 14:56:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2020-12-01 14:56:27,395 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 26 [2020-12-01 14:56:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:56:27,396 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2020-12-01 14:56:27,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:56:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2020-12-01 14:56:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 14:56:27,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:56:27,397 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] [2020-12-01 14:56:27,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 14:56:27,399 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-12-01 14:56:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:56:27,400 INFO L82 PathProgramCache]: Analyzing trace with hash -148961045, now seen corresponding path program 1 times [2020-12-01 14:56:27,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:56:27,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904146419] [2020-12-01 14:56:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:56:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:56:27,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:56:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:56:27,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:56:27,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:56:27,476 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:56:27,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 14:56:27,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:56:27 BoogieIcfgContainer [2020-12-01 14:56:27,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:56:27,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:56:27,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:56:27,538 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:56:27,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:56:14" (3/4) ... [2020-12-01 14:56:27,541 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 14:56:27,608 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ca06a003-1483-475a-a4d7-67ad8d817ee1/bin/uautomizer/witness.graphml [2020-12-01 14:56:27,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:56:27,613 INFO L168 Benchmark]: Toolchain (without parser) took 14189.28 ms. Allocated memory was 92.3 MB in the beginning and 211.8 MB in the end (delta: 119.5 MB). Free memory was 60.5 MB in the beginning and 95.1 MB in the end (delta: -34.6 MB). Peak memory consumption was 84.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,614 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 49.3 MB in the beginning and 49.2 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:56:27,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.51 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.5 MB in the beginning and 84.8 MB in the end (delta: -24.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,615 INFO L168 Benchmark]: Boogie Preprocessor took 63.27 ms. Allocated memory is still 119.5 MB. Free memory was 84.8 MB in the beginning and 82.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,616 INFO L168 Benchmark]: RCFGBuilder took 842.93 ms. Allocated memory is still 119.5 MB. Free memory was 82.0 MB in the beginning and 87.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,616 INFO L168 Benchmark]: TraceAbstraction took 12630.11 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 86.2 MB in the beginning and 97.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 81.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,617 INFO L168 Benchmark]: Witness Printer took 74.45 ms. Allocated memory is still 211.8 MB. Free memory was 97.2 MB in the beginning and 95.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:56:27,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 49.3 MB in the beginning and 49.2 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.51 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.5 MB in the beginning and 84.8 MB in the end (delta: -24.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.27 ms. Allocated memory is still 119.5 MB. Free memory was 84.8 MB in the beginning and 82.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 842.93 ms. Allocated memory is still 119.5 MB. Free memory was 82.0 MB in the beginning and 87.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12630.11 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 86.2 MB in the beginning and 97.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 81.7 MB. Max. memory is 16.1 GB. * Witness Printer took 74.45 ms. Allocated memory is still 211.8 MB. Free memory was 97.2 MB in the beginning and 95.1 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))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1019] x->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1020] head = x VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1040] x = head VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1043] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=1] [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->next={-1:0}] [L1049] x = x->next [L1050] COND TRUE \read(*x) VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1052] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, 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: 12.5s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1034 SDtfs, 2401 SDslu, 1944 SDs, 0 SdLazy, 6015 SolverSat, 413 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=13, 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, 16 MinimizatonAttempts, 581 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 315 ConstructedInterpolants, 2 QuantifiedInterpolants, 44437 SizeOfPredicates, 24 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 1/5 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...