./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC --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 0.2.0-7b2dab5 [2021-10-11 00:22:52,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:52,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:52,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:52,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:52,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:52,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:52,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:52,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:52,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:52,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:52,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:52,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:52,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:52,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:52,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:52,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:52,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:52,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:52,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:52,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:52,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:52,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:52,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:52,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:52,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:52,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:52,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:52,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:52,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:52,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:52,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:52,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:52,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:52,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:52,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:52,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:52,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:52,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:52,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:52,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:52,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-11 00:22:52,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:52,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:52,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:52,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:52,130 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:52,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:52,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:52,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:22:52,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:52,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:52,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:52,138 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:22:52,138 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:22:52,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:52,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:22:52,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:52,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:52,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:52,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:52,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:52,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:52,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:52,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:52,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:52,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:52,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:52,151 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_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2021-10-11 00:22:52,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:52,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:52,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:52,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:52,471 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:52,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-11 00:22:52,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/data/2c43efddf/30782a63083b4361bc4d6a10b57ae0ab/FLAG9bbc8d43b [2021-10-11 00:22:53,103 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:53,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-11 00:22:53,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/data/2c43efddf/30782a63083b4361bc4d6a10b57ae0ab/FLAG9bbc8d43b [2021-10-11 00:22:53,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/data/2c43efddf/30782a63083b4361bc4d6a10b57ae0ab [2021-10-11 00:22:53,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:53,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:22:53,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:53,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:53,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:53,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:53" (1/1) ... [2021-10-11 00:22:53,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1d446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:53, skipping insertion in model container [2021-10-11 00:22:53,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:53" (1/1) ... [2021-10-11 00:22:53,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:53,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:53,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-11 00:22:53,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:53,891 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:53,946 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-11 00:22:53,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:54,005 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:54,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54 WrapperNode [2021-10-11 00:22:54,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:54,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:54,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:54,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:54,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... [2021-10-11 00:22:54,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:54,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:54,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:54,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:54,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:22:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:22:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-11 00:22:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:22:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-11 00:22:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-11 00:22:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-11 00:22:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-11 00:22:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-11 00:22:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-11 00:22:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-11 00:22:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-11 00:22:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-11 00:22:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-11 00:22:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-11 00:22:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-11 00:22:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-11 00:22:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-11 00:22:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-11 00:22:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-11 00:22:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-11 00:22:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-11 00:22:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-11 00:22:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-11 00:22:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-11 00:22:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-11 00:22:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-11 00:22:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-11 00:22:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-11 00:22:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-11 00:22:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-11 00:22:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-11 00:22:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-11 00:22:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-11 00:22:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-11 00:22:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-11 00:22:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-11 00:22:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-11 00:22:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-11 00:22:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-11 00:22:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-11 00:22:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-11 00:22:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-11 00:22:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-11 00:22:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-11 00:22:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-11 00:22:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-11 00:22:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-11 00:22:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-11 00:22:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-11 00:22:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-11 00:22:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-11 00:22:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-11 00:22:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-11 00:22:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-11 00:22:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-11 00:22:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-11 00:22:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-11 00:22:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-11 00:22:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-11 00:22:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-11 00:22:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-11 00:22:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-11 00:22:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-11 00:22:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-11 00:22:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-11 00:22:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-11 00:22:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-11 00:22:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-11 00:22:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-11 00:22:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-11 00:22:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-11 00:22:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-11 00:22:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-11 00:22:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-11 00:22:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-11 00:22:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-11 00:22:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-11 00:22:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-11 00:22:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-11 00:22:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-11 00:22:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-11 00:22:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-11 00:22:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-11 00:22:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-11 00:22:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-11 00:22:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-11 00:22:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:22:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:22:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:22:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:22:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:22:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:54,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:54,927 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 00:22:54,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:54 BoogieIcfgContainer [2021-10-11 00:22:54,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:54,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:54,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:54,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:54,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:53" (1/3) ... [2021-10-11 00:22:54,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1868a272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:54, skipping insertion in model container [2021-10-11 00:22:54,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:54" (2/3) ... [2021-10-11 00:22:54,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1868a272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:54, skipping insertion in model container [2021-10-11 00:22:54,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:54" (3/3) ... [2021-10-11 00:22:54,939 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2021-10-11 00:22:54,953 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:54,957 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2021-10-11 00:22:54,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-10-11 00:22:54,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:54,991 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:22:54,991 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:54,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:54,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:54,991 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:54,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:54,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2021-10-11 00:22:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:22:55,028 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:55,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:55,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:55,044 INFO L82 PathProgramCache]: Analyzing trace with hash 701258728, now seen corresponding path program 1 times [2021-10-11 00:22:55,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:55,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136457261] [2021-10-11 00:22:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:55,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136457261] [2021-10-11 00:22:55,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:55,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:22:55,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991513393] [2021-10-11 00:22:55,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:22:55,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:55,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:22:55,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:22:55,396 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2021-10-11 00:22:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:55,811 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2021-10-11 00:22:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:55,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:22:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:55,831 INFO L225 Difference]: With dead ends: 137 [2021-10-11 00:22:55,831 INFO L226 Difference]: Without dead ends: 133 [2021-10-11 00:22:55,833 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 [2021-10-11 00:22:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-11 00:22:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 104. [2021-10-11 00:22:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-10-11 00:22:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-10-11 00:22:55,880 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 7 [2021-10-11 00:22:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:55,881 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-10-11 00:22:55,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:22:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-10-11 00:22:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:22:55,881 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:55,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:55,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:55,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash 701258729, now seen corresponding path program 1 times [2021-10-11 00:22:55,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:55,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675959836] [2021-10-11 00:22:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:55,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675959836] [2021-10-11 00:22:55,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:55,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:22:55,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199660491] [2021-10-11 00:22:55,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:22:55,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:55,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:22:55,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:22:55,969 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 4 states. [2021-10-11 00:22:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:56,247 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-10-11 00:22:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:56,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:22:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:56,249 INFO L225 Difference]: With dead ends: 131 [2021-10-11 00:22:56,249 INFO L226 Difference]: Without dead ends: 131 [2021-10-11 00:22:56,250 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 [2021-10-11 00:22:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-11 00:22:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 102. [2021-10-11 00:22:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-10-11 00:22:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2021-10-11 00:22:56,275 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 7 [2021-10-11 00:22:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:56,276 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2021-10-11 00:22:56,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:22:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2021-10-11 00:22:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:22:56,277 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:56,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:56,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:22:56,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -375208435, now seen corresponding path program 1 times [2021-10-11 00:22:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625999588] [2021-10-11 00:22:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:56,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625999588] [2021-10-11 00:22:56,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:56,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:56,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583612949] [2021-10-11 00:22:56,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:56,417 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 5 states. [2021-10-11 00:22:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:56,682 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2021-10-11 00:22:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:22:56,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:22:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:56,684 INFO L225 Difference]: With dead ends: 105 [2021-10-11 00:22:56,684 INFO L226 Difference]: Without dead ends: 105 [2021-10-11 00:22:56,684 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 [2021-10-11 00:22:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-11 00:22:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2021-10-11 00:22:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-10-11 00:22:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2021-10-11 00:22:56,692 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 12 [2021-10-11 00:22:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:56,693 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2021-10-11 00:22:56,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2021-10-11 00:22:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:22:56,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:56,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:56,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:22:56,695 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash -375208434, now seen corresponding path program 1 times [2021-10-11 00:22:56,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:56,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308305957] [2021-10-11 00:22:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:56,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308305957] [2021-10-11 00:22:56,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:56,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:56,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402592761] [2021-10-11 00:22:56,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:22:56,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:56,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:22:56,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:22:56,793 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 5 states. [2021-10-11 00:22:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:57,108 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-11 00:22:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:22:57,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:22:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:57,110 INFO L225 Difference]: With dead ends: 133 [2021-10-11 00:22:57,110 INFO L226 Difference]: Without dead ends: 133 [2021-10-11 00:22:57,111 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 [2021-10-11 00:22:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-11 00:22:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2021-10-11 00:22:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-10-11 00:22:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2021-10-11 00:22:57,118 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 12 [2021-10-11 00:22:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:57,119 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2021-10-11 00:22:57,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2021-10-11 00:22:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:22:57,120 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:57,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:57,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:22:57,120 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1965384500, now seen corresponding path program 1 times [2021-10-11 00:22:57,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:57,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044514340] [2021-10-11 00:22:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:57,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044514340] [2021-10-11 00:22:57,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:57,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:22:57,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368872016] [2021-10-11 00:22:57,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:22:57,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:57,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:22:57,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:57,220 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 7 states. [2021-10-11 00:22:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:57,720 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2021-10-11 00:22:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:22:57,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-10-11 00:22:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:57,723 INFO L225 Difference]: With dead ends: 188 [2021-10-11 00:22:57,724 INFO L226 Difference]: Without dead ends: 188 [2021-10-11 00:22:57,725 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 [2021-10-11 00:22:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-11 00:22:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2021-10-11 00:22:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-10-11 00:22:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-10-11 00:22:57,745 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 15 [2021-10-11 00:22:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-10-11 00:22:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:22:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-10-11 00:22:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:22:57,746 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:57,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:57,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:22:57,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1965384501, now seen corresponding path program 1 times [2021-10-11 00:22:57,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:57,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674515923] [2021-10-11 00:22:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:57,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674515923] [2021-10-11 00:22:57,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:57,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:22:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867903089] [2021-10-11 00:22:57,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:22:57,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:22:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:57,916 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 7 states. [2021-10-11 00:22:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:58,526 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2021-10-11 00:22:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:22:58,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-10-11 00:22:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:58,528 INFO L225 Difference]: With dead ends: 197 [2021-10-11 00:22:58,528 INFO L226 Difference]: Without dead ends: 197 [2021-10-11 00:22:58,529 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 [2021-10-11 00:22:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-11 00:22:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 103. [2021-10-11 00:22:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-10-11 00:22:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-10-11 00:22:58,534 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 15 [2021-10-11 00:22:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:58,534 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-10-11 00:22:58,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:22:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-10-11 00:22:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:22:58,536 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:58,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:58,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:22:58,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:58,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2137652846, now seen corresponding path program 1 times [2021-10-11 00:22:58,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:58,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063233691] [2021-10-11 00:22:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:58,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063233691] [2021-10-11 00:22:58,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:58,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:22:58,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194832100] [2021-10-11 00:22:58,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:22:58,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:58,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:22:58,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:58,623 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand 6 states. [2021-10-11 00:22:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:58,855 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-10-11 00:22:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:22:58,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 00:22:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:58,857 INFO L225 Difference]: With dead ends: 114 [2021-10-11 00:22:58,857 INFO L226 Difference]: Without dead ends: 114 [2021-10-11 00:22:58,858 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 [2021-10-11 00:22:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-11 00:22:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2021-10-11 00:22:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 00:22:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2021-10-11 00:22:58,864 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 19 [2021-10-11 00:22:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:58,864 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2021-10-11 00:22:58,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:22:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2021-10-11 00:22:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:22:58,865 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:58,865 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] [2021-10-11 00:22:58,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:22:58,865 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1892292425, now seen corresponding path program 1 times [2021-10-11 00:22:58,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:58,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153556942] [2021-10-11 00:22:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:58,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153556942] [2021-10-11 00:22:58,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:58,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:22:58,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243597658] [2021-10-11 00:22:58,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:22:58,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:58,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:22:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:58,940 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 6 states. [2021-10-11 00:22:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:59,249 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2021-10-11 00:22:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:22:59,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-10-11 00:22:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:59,250 INFO L225 Difference]: With dead ends: 144 [2021-10-11 00:22:59,250 INFO L226 Difference]: Without dead ends: 144 [2021-10-11 00:22:59,251 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 [2021-10-11 00:22:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-11 00:22:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2021-10-11 00:22:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-10-11 00:22:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2021-10-11 00:22:59,255 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 20 [2021-10-11 00:22:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:59,256 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2021-10-11 00:22:59,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:22:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2021-10-11 00:22:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:22:59,257 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:59,257 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] [2021-10-11 00:22:59,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:22:59,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1892292424, now seen corresponding path program 1 times [2021-10-11 00:22:59,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:59,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407539924] [2021-10-11 00:22:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:59,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407539924] [2021-10-11 00:22:59,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:59,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:22:59,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376897186] [2021-10-11 00:22:59,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:22:59,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:59,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:22:59,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:59,340 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 6 states. [2021-10-11 00:22:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:59,687 INFO L93 Difference]: Finished difference Result 153 states and 171 transitions. [2021-10-11 00:22:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:22:59,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-10-11 00:22:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:59,689 INFO L225 Difference]: With dead ends: 153 [2021-10-11 00:22:59,689 INFO L226 Difference]: Without dead ends: 153 [2021-10-11 00:22:59,690 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 [2021-10-11 00:22:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-11 00:22:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 107. [2021-10-11 00:22:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 00:22:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-11 00:22:59,694 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 20 [2021-10-11 00:22:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:59,695 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-11 00:22:59,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:22:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-11 00:22:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:22:59,696 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:59,696 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] [2021-10-11 00:22:59,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:22:59,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:22:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash -225249250, now seen corresponding path program 1 times [2021-10-11 00:22:59,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:59,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563754938] [2021-10-11 00:22:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:22:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:59,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563754938] [2021-10-11 00:22:59,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418404842] [2021-10-11 00:22:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:22:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:00,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 00:23:00,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:00,114 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 [2021-10-11 00:23:00,115 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:00,118 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 00:23:00,159 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:00,160 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 [2021-10-11 00:23:00,163 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,195 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-10-11 00:23:00,196 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2021-10-11 00:23:00,227 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 [2021-10-11 00:23:00,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:00,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-10-11 00:23:00,342 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 17 treesize of output 9 [2021-10-11 00:23:00,343 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:00,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:00,352 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. [2021-10-11 00:23:00,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2021-10-11 00:23:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:00,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:23:00,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-10-11 00:23:00,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241887561] [2021-10-11 00:23:00,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:23:00,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:23:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:23:00,379 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand 12 states. [2021-10-11 00:23:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:00,996 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2021-10-11 00:23:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:23:00,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2021-10-11 00:23:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:00,998 INFO L225 Difference]: With dead ends: 149 [2021-10-11 00:23:00,998 INFO L226 Difference]: Without dead ends: 149 [2021-10-11 00:23:00,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:23:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-11 00:23:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 110. [2021-10-11 00:23:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-10-11 00:23:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-10-11 00:23:01,004 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 22 [2021-10-11 00:23:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:01,004 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-10-11 00:23:01,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:23:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-10-11 00:23:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:23:01,005 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:01,005 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] [2021-10-11 00:23:01,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 00:23:01,231 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:01,231 INFO L82 PathProgramCache]: Analyzing trace with hash -225249249, now seen corresponding path program 1 times [2021-10-11 00:23:01,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:01,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849805634] [2021-10-11 00:23:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:23:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:01,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849805634] [2021-10-11 00:23:01,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858473441] [2021-10-11 00:23:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:01,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-11 00:23:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:01,616 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 [2021-10-11 00:23:01,617 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,619 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,620 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 00:23:01,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 00:23:01,716 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 [2021-10-11 00:23:01,718 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,727 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,737 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,737 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 [2021-10-11 00:23:01,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:01,756 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,765 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,765 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2021-10-11 00:23:01,816 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 [2021-10-11 00:23:01,817 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,829 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,834 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 [2021-10-11 00:23:01,835 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,849 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,850 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:36 [2021-10-11 00:23:01,944 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 [2021-10-11 00:23:01,946 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,960 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 [2021-10-11 00:23:01,962 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 00:23:01,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:23:01,972 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. [2021-10-11 00:23:01,973 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:20 [2021-10-11 00:23:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:02,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:23:02,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-11 00:23:02,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291435756] [2021-10-11 00:23:02,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:23:02,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:02,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:23:02,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:23:02,076 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 16 states. [2021-10-11 00:23:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:03,489 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2021-10-11 00:23:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:23:03,489 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2021-10-11 00:23:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:03,492 INFO L225 Difference]: With dead ends: 179 [2021-10-11 00:23:03,492 INFO L226 Difference]: Without dead ends: 179 [2021-10-11 00:23:03,493 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 [2021-10-11 00:23:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-11 00:23:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 109. [2021-10-11 00:23:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 00:23:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2021-10-11 00:23:03,500 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 22 [2021-10-11 00:23:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:03,501 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2021-10-11 00:23:03,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:23:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2021-10-11 00:23:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:23:03,502 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:03,502 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] [2021-10-11 00:23:03,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:03,730 INFO L429 AbstractCegarLoop]: === Iteration 12 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1837810581, now seen corresponding path program 1 times [2021-10-11 00:23:03,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:03,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519690288] [2021-10-11 00:23:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:23:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519690288] [2021-10-11 00:23:03,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:23:03,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699285598] [2021-10-11 00:23:03,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:23:03,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:03,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:23:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:23:03,872 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 10 states. [2021-10-11 00:23:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:04,306 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2021-10-11 00:23:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:23:04,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2021-10-11 00:23:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:04,308 INFO L225 Difference]: With dead ends: 115 [2021-10-11 00:23:04,308 INFO L226 Difference]: Without dead ends: 115 [2021-10-11 00:23:04,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:23:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-11 00:23:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2021-10-11 00:23:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-10-11 00:23:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2021-10-11 00:23:04,312 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 23 [2021-10-11 00:23:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:04,313 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2021-10-11 00:23:04,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:23:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2021-10-11 00:23:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:23:04,314 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:04,314 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] [2021-10-11 00:23:04,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 00:23:04,314 INFO L429 AbstractCegarLoop]: === Iteration 13 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:04,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1837810580, now seen corresponding path program 1 times [2021-10-11 00:23:04,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:04,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662721756] [2021-10-11 00:23:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:23:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:04,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662721756] [2021-10-11 00:23:04,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:04,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:23:04,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694248591] [2021-10-11 00:23:04,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:23:04,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:23:04,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:23:04,455 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 10 states. [2021-10-11 00:23:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:04,937 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-10-11 00:23:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:23:04,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2021-10-11 00:23:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:04,938 INFO L225 Difference]: With dead ends: 114 [2021-10-11 00:23:04,938 INFO L226 Difference]: Without dead ends: 114 [2021-10-11 00:23:04,939 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 [2021-10-11 00:23:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-11 00:23:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2021-10-11 00:23:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 00:23:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-11 00:23:04,943 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 23 [2021-10-11 00:23:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:04,943 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-11 00:23:04,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:23:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-11 00:23:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:23:04,944 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:04,944 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] [2021-10-11 00:23:04,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 00:23:04,945 INFO L429 AbstractCegarLoop]: === Iteration 14 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1605577006, now seen corresponding path program 1 times [2021-10-11 00:23:04,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:04,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320963174] [2021-10-11 00:23:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:23:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:05,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320963174] [2021-10-11 00:23:05,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:05,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:23:05,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876741369] [2021-10-11 00:23:05,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:23:05,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:05,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:23:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:23:05,059 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand 9 states. [2021-10-11 00:23:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:05,466 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-10-11 00:23:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:23:05,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-10-11 00:23:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:05,468 INFO L225 Difference]: With dead ends: 151 [2021-10-11 00:23:05,468 INFO L226 Difference]: Without dead ends: 151 [2021-10-11 00:23:05,469 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 [2021-10-11 00:23:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-11 00:23:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 111. [2021-10-11 00:23:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-10-11 00:23:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2021-10-11 00:23:05,475 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 23 [2021-10-11 00:23:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:05,476 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2021-10-11 00:23:05,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:23:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2021-10-11 00:23:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:23:05,481 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:05,481 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] [2021-10-11 00:23:05,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 00:23:05,482 INFO L429 AbstractCegarLoop]: === Iteration 15 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1605577007, now seen corresponding path program 1 times [2021-10-11 00:23:05,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:05,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135337815] [2021-10-11 00:23:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:23:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:05,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135337815] [2021-10-11 00:23:05,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:05,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:23:05,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209809797] [2021-10-11 00:23:05,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:23:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:23:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:23:05,609 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 8 states. [2021-10-11 00:23:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:06,069 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2021-10-11 00:23:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:23:06,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2021-10-11 00:23:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:06,071 INFO L225 Difference]: With dead ends: 175 [2021-10-11 00:23:06,071 INFO L226 Difference]: Without dead ends: 175 [2021-10-11 00:23:06,072 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 [2021-10-11 00:23:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-11 00:23:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 113. [2021-10-11 00:23:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 00:23:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2021-10-11 00:23:06,076 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 23 [2021-10-11 00:23:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:06,076 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2021-10-11 00:23:06,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:23:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2021-10-11 00:23:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:23:06,077 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:06,078 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] [2021-10-11 00:23:06,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 00:23:06,078 INFO L429 AbstractCegarLoop]: === Iteration 16 === [mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr48ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr47ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2021-10-11 00:23:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1066247027, now seen corresponding path program 1 times [2021-10-11 00:23:06,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:06,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327304089] [2021-10-11 00:23:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,131 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:06,131 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:23:06,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 00:23:06,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:06 BoogieIcfgContainer [2021-10-11 00:23:06,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:06,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:06,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:06,162 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:06,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:54" (3/4) ... [2021-10-11 00:23:06,164 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:23:06,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45879372-313a-47fe-9012-989e48ddce57/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:06,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:06,215 INFO L168 Benchmark]: Toolchain (without parser) took 12773.87 ms. Allocated memory was 90.2 MB in the beginning and 205.5 MB in the end (delta: 115.3 MB). Free memory was 53.7 MB in the beginning and 145.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,216 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:06,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.30 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 53.6 MB in the beginning and 76.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,219 INFO L168 Benchmark]: Boogie Preprocessor took 68.77 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 74.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,219 INFO L168 Benchmark]: RCFGBuilder took 853.25 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 66.7 MB in the end (delta: 7.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,220 INFO L168 Benchmark]: TraceAbstraction took 11229.67 ms. Allocated memory was 113.2 MB in the beginning and 205.5 MB in the end (delta: 92.3 MB). Free memory was 66.1 MB in the beginning and 147.4 MB in the end (delta: -81.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,220 INFO L168 Benchmark]: Witness Printer took 52.87 ms. Allocated memory is still 205.5 MB. Free memory was 147.4 MB in the beginning and 145.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:06,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 563.30 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 53.6 MB in the beginning and 76.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.77 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 74.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 853.25 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 66.7 MB in the end (delta: 7.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11229.67 ms. Allocated memory was 113.2 MB in the beginning and 205.5 MB in the end (delta: 92.3 MB). Free memory was 66.1 MB in the beginning and 147.4 MB in the end (delta: -81.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.87 ms. Allocated memory is still 205.5 MB. Free memory was 147.4 MB in the beginning and 145.3 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: 1053]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1001] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1003] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1019] x->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1020] head = x VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1040] x = head VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] [L1043] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=1] [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->next={-1:0}] [L1049] x = x->next [L1050] COND TRUE \read(*x) VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1052] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=0] [L1052] COND TRUE x->data != 1 [L1053] reach_error() VAL [head={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 113 locations, 49 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 2270 SDslu, 1932 SDs, 0 SdLazy, 5641 SolverSat, 380 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 570 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 290 ConstructedInterpolants, 2 QuantifiedInterpolants, 42387 SizeOfPredicates, 24 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 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...