./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 857285933727e0d6539ccc24abeb7a5fe95b45c6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:42:32,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:42:32,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:42:32,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:42:32,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:42:32,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:42:32,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:42:32,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:42:32,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:42:32,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:42:32,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:42:32,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:42:32,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:42:32,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:42:32,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:42:32,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:42:32,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:42:32,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:42:32,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:42:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:42:32,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:42:32,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:42:32,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:42:32,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:42:32,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:42:32,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:42:32,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:42:32,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:42:32,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:42:32,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:42:32,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:42:32,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:42:32,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:42:32,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:42:32,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:42:32,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:42:32,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:42:32,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:42:32,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:42:32,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:42:32,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:42:32,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-30 00:42:32,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:42:32,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:42:32,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:42:32,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:42:32,619 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:42:32,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:42:32,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:42:32,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:42:32,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:42:32,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:42:32,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:42:32,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:42:32,623 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:42:32,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:42:32,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:42:32,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:42:32,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:42:32,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:42:32,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:42:32,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:42:32,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:42:32,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:32,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:42:32,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:42:32,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:42:32,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:42:32,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:42:32,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 857285933727e0d6539ccc24abeb7a5fe95b45c6 [2020-11-30 00:42:33,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:42:33,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:42:33,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:42:33,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:42:33,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:42:33,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-2.i [2020-11-30 00:42:33,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/data/06569b10a/ebb8a3fd31c44175a8beae46acef7336/FLAG317e2d878 [2020-11-30 00:42:33,771 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:42:33,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/sv-benchmarks/c/list-properties/list-2.i [2020-11-30 00:42:33,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/data/06569b10a/ebb8a3fd31c44175a8beae46acef7336/FLAG317e2d878 [2020-11-30 00:42:34,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/data/06569b10a/ebb8a3fd31c44175a8beae46acef7336 [2020-11-30 00:42:34,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:42:34,081 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:42:34,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:34,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:42:34,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:42:34,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369d5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34, skipping insertion in model container [2020-11-30 00:42:34,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:42:34,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:42:34,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:34,712 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:42:34,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:34,888 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:42:34,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34 WrapperNode [2020-11-30 00:42:34,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:34,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:42:34,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:42:34,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:42:34,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... [2020-11-30 00:42:34,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:42:34,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:42:34,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:42:34,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:42:35,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:42:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:42:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 00:42:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-30 00:42:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-30 00:42:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-30 00:42:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-30 00:42:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-30 00:42:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-30 00:42:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:42:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:42:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 00:42:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 00:42:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 00:42:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 00:42:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:42:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:42:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 00:42:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 00:42:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 00:42:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 00:42:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 00:42:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 00:42:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-30 00:42:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 00:42:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 00:42:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 00:42:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 00:42:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 00:42:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 00:42:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 00:42:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 00:42:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 00:42:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 00:42:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 00:42:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 00:42:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 00:42:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 00:42:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 00:42:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 00:42:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 00:42:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 00:42:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 00:42:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 00:42:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 00:42:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 00:42:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 00:42:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 00:42:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 00:42:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 00:42:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 00:42:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 00:42:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 00:42:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 00:42:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 00:42:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 00:42:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 00:42:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 00:42:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 00:42:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 00:42:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 00:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 00:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 00:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 00:42:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 00:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 00:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 00:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 00:42:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 00:42:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 00:42:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 00:42:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 00:42:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 00:42:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 00:42:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 00:42:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 00:42:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 00:42:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 00:42:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 00:42:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 00:42:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 00:42:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 00:42:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 00:42:35,110 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 00:42:35,110 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 00:42:35,110 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 00:42:35,110 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 00:42:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 00:42:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 00:42:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 00:42:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 00:42:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 00:42:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 00:42:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 00:42:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 00:42:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 00:42:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 00:42:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 00:42:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-30 00:42:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:42:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:42:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:42:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 00:42:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 00:42:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:42:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:42:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:42:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:42:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:42:35,590 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-30 00:42:36,036 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:42:36,036 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-30 00:42:36,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:36 BoogieIcfgContainer [2020-11-30 00:42:36,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:42:36,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:42:36,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:42:36,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:42:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:42:34" (1/3) ... [2020-11-30 00:42:36,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c304b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:36, skipping insertion in model container [2020-11-30 00:42:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:34" (2/3) ... [2020-11-30 00:42:36,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c304b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:36, skipping insertion in model container [2020-11-30 00:42:36,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:36" (3/3) ... [2020-11-30 00:42:36,067 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-11-30 00:42:36,081 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:42:36,088 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-30 00:42:36,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-30 00:42:36,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:42:36,129 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:42:36,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:42:36,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:42:36,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:42:36,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:42:36,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:42:36,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:42:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-11-30 00:42:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:42:36,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:36,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:36,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-11-30 00:42:36,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:36,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561309454] [2020-11-30 00:42:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:36,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:36,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561309454] [2020-11-30 00:42:36,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:36,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:42:36,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044526654] [2020-11-30 00:42:36,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:42:36,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:36,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:42:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:42:36,656 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-11-30 00:42:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:37,085 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-11-30 00:42:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:42:37,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 00:42:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:37,096 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:42:37,097 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:42:37,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:42:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:42:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-30 00:42:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-30 00:42:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-11-30 00:42:37,175 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-11-30 00:42:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:37,176 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-11-30 00:42:37,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:42:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-11-30 00:42:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:42:37,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:37,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:37,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:42:37,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-11-30 00:42:37,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:37,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832454992] [2020-11-30 00:42:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832454992] [2020-11-30 00:42:37,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:37,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:42:37,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461756519] [2020-11-30 00:42:37,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:42:37,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:42:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:42:37,390 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-11-30 00:42:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:37,715 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-11-30 00:42:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:42:37,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 00:42:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:37,720 INFO L225 Difference]: With dead ends: 93 [2020-11-30 00:42:37,720 INFO L226 Difference]: Without dead ends: 93 [2020-11-30 00:42:37,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:42:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-30 00:42:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-11-30 00:42:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 00:42:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-11-30 00:42:37,734 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-11-30 00:42:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:37,735 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-11-30 00:42:37,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:42:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-11-30 00:42:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:42:37,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:37,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:37,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:42:37,737 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:37,738 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-11-30 00:42:37,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:37,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142804111] [2020-11-30 00:42:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:37,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142804111] [2020-11-30 00:42:37,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:37,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:42:37,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798423625] [2020-11-30 00:42:37,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:37,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:37,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:37,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:37,976 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-11-30 00:42:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:38,432 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-11-30 00:42:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:42:38,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 00:42:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:38,435 INFO L225 Difference]: With dead ends: 119 [2020-11-30 00:42:38,435 INFO L226 Difference]: Without dead ends: 119 [2020-11-30 00:42:38,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:42:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-30 00:42:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-11-30 00:42:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-30 00:42:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-30 00:42:38,459 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-11-30 00:42:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:38,460 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-30 00:42:38,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-30 00:42:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:42:38,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:38,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:38,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:42:38,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-11-30 00:42:38,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:38,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504409316] [2020-11-30 00:42:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:38,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504409316] [2020-11-30 00:42:38,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:38,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:42:38,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16067221] [2020-11-30 00:42:38,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:38,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:38,700 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-30 00:42:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:39,240 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-11-30 00:42:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:42:39,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 00:42:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:39,242 INFO L225 Difference]: With dead ends: 110 [2020-11-30 00:42:39,243 INFO L226 Difference]: Without dead ends: 110 [2020-11-30 00:42:39,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:42:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-30 00:42:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-11-30 00:42:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 00:42:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-11-30 00:42:39,259 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-11-30 00:42:39,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:39,260 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-11-30 00:42:39,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-11-30 00:42:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:42:39,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:39,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:39,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:42:39,265 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:39,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-11-30 00:42:39,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:39,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063707336] [2020-11-30 00:42:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:39,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063707336] [2020-11-30 00:42:39,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:42:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545154374] [2020-11-30 00:42:39,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:39,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:39,461 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-11-30 00:42:40,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:40,003 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-11-30 00:42:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:42:40,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 00:42:40,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:40,005 INFO L225 Difference]: With dead ends: 111 [2020-11-30 00:42:40,005 INFO L226 Difference]: Without dead ends: 111 [2020-11-30 00:42:40,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:42:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-30 00:42:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-11-30 00:42:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-30 00:42:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-30 00:42:40,015 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-11-30 00:42:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:40,015 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-30 00:42:40,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-30 00:42:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:42:40,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:40,017 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] [2020-11-30 00:42:40,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:42:40,017 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-11-30 00:42:40,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:40,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380897901] [2020-11-30 00:42:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:40,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380897901] [2020-11-30 00:42:40,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:40,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:42:40,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173766952] [2020-11-30 00:42:40,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:40,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:40,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:40,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:40,222 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-30 00:42:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:40,491 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-11-30 00:42:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:42:40,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 00:42:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:40,493 INFO L225 Difference]: With dead ends: 107 [2020-11-30 00:42:40,493 INFO L226 Difference]: Without dead ends: 107 [2020-11-30 00:42:40,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:42:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-30 00:42:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-11-30 00:42:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-30 00:42:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-11-30 00:42:40,501 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-11-30 00:42:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:40,502 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-11-30 00:42:40,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-11-30 00:42:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:42:40,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:40,503 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:40,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:42:40,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-11-30 00:42:40,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:40,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645742926] [2020-11-30 00:42:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:40,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645742926] [2020-11-30 00:42:40,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:40,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:42:40,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308719929] [2020-11-30 00:42:40,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:40,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:40,650 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-11-30 00:42:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:41,058 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-11-30 00:42:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:42:41,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 00:42:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:41,060 INFO L225 Difference]: With dead ends: 91 [2020-11-30 00:42:41,060 INFO L226 Difference]: Without dead ends: 91 [2020-11-30 00:42:41,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:42:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-30 00:42:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-11-30 00:42:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-30 00:42:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-30 00:42:41,069 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-11-30 00:42:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:41,070 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-30 00:42:41,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-30 00:42:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:42:41,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:41,071 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:41,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:42:41,072 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:41,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-11-30 00:42:41,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:41,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841662470] [2020-11-30 00:42:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:41,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841662470] [2020-11-30 00:42:41,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:41,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:42:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822676309] [2020-11-30 00:42:41,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:41,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:41,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:41,246 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-30 00:42:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:41,747 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-11-30 00:42:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:42:41,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 00:42:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:41,749 INFO L225 Difference]: With dead ends: 88 [2020-11-30 00:42:41,749 INFO L226 Difference]: Without dead ends: 88 [2020-11-30 00:42:41,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:42:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-30 00:42:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-11-30 00:42:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 00:42:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-11-30 00:42:41,757 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-11-30 00:42:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:41,757 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-11-30 00:42:41,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-11-30 00:42:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:42:41,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:41,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:41,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:42:41,770 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-11-30 00:42:41,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:41,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342914543] [2020-11-30 00:42:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:42:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:41,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342914543] [2020-11-30 00:42:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:42:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376038746] [2020-11-30 00:42:41,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:42:41,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:42:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:42:41,965 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-11-30 00:42:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:42,309 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-30 00:42:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:42:42,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-30 00:42:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:42,311 INFO L225 Difference]: With dead ends: 92 [2020-11-30 00:42:42,311 INFO L226 Difference]: Without dead ends: 92 [2020-11-30 00:42:42,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:42:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-30 00:42:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-11-30 00:42:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 00:42:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-30 00:42:42,318 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-11-30 00:42:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:42,318 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-30 00:42:42,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:42:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-30 00:42:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:42:42,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:42,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:42,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:42:42,333 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 00:42:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-11-30 00:42:42,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:42,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313256834] [2020-11-30 00:42:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:42,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:42,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:42,417 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:42,417 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:42:42,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:42:42,446 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-30 00:42:42,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:42:42 BoogieIcfgContainer [2020-11-30 00:42:42,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:42:42,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:42,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:42,478 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:42,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:36" (3/4) ... [2020-11-30 00:42:42,481 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:42:42,487 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-30 00:42:42,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40627135-be2e-4d89-ab22-d3c6bcaf634f/bin/uautomizer/witness.graphml [2020-11-30 00:42:42,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:42,565 INFO L168 Benchmark]: Toolchain (without parser) took 8483.59 ms. Allocated memory was 88.1 MB in the beginning and 148.9 MB in the end (delta: 60.8 MB). Free memory was 59.0 MB in the beginning and 57.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,566 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:42,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.82 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 58.7 MB in the beginning and 84.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,567 INFO L168 Benchmark]: Boogie Preprocessor took 103.97 ms. Allocated memory is still 119.5 MB. Free memory was 84.4 MB in the beginning and 81.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,568 INFO L168 Benchmark]: RCFGBuilder took 1042.17 ms. Allocated memory is still 119.5 MB. Free memory was 81.7 MB in the beginning and 82.3 MB in the end (delta: -636.4 kB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,568 INFO L168 Benchmark]: TraceAbstraction took 6433.36 ms. Allocated memory was 119.5 MB in the beginning and 148.9 MB in the end (delta: 29.4 MB). Free memory was 82.3 MB in the beginning and 59.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,569 INFO L168 Benchmark]: Witness Printer took 86.30 ms. Allocated memory is still 148.9 MB. Free memory was 59.1 MB in the beginning and 57.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:42,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 809.82 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 58.7 MB in the beginning and 84.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.97 ms. Allocated memory is still 119.5 MB. Free memory was 84.4 MB in the beginning and 81.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1042.17 ms. Allocated memory is still 119.5 MB. Free memory was 81.7 MB in the beginning and 82.3 MB in the end (delta: -636.4 kB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6433.36 ms. Allocated memory was 119.5 MB in the beginning and 148.9 MB in the end (delta: 29.4 MB). Free memory was 82.3 MB in the beginning and 59.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. * Witness Printer took 86.30 ms. Allocated memory is still 148.9 MB. Free memory was 59.1 MB in the beginning and 57.0 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, 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, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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...