./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:17,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:17,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:17,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:17,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:17,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:17,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:17,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:17,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:17,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:17,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:17,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:17,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:17,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:17,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:17,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:17,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:17,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:17,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:17,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:17,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:17,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:17,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:17,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:17,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:17,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:17,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:17,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:17,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:17,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:17,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:17,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:17,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:17,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:17,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:17,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:17,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:17,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:17,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:17,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:17,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:17,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:51:17,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:17,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:17,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:17,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:17,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:17,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:17,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:17,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:17,512 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:17,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:17,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:17,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:51:17,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:17,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:17,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:17,514 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:51:17,514 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:51:17,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:51:17,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:17,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:51:17,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:17,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:17,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:17,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:17,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:17,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:17,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:17,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:17,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:51:17,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:51:17,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:17,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-11-13 17:51:17,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:17,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:17,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:17,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:17,915 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:17,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-13 17:51:18,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/abb438d77/8093c879b83d43a194ee6af7adde1a10/FLAG1a0945748 [2021-11-13 17:51:18,785 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:18,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-13 17:51:18,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/abb438d77/8093c879b83d43a194ee6af7adde1a10/FLAG1a0945748 [2021-11-13 17:51:19,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/abb438d77/8093c879b83d43a194ee6af7adde1a10 [2021-11-13 17:51:19,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:19,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:51:19,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:19,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:19,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:19,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566b31bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19, skipping insertion in model container [2021-11-13 17:51:19,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:19,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:19,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-13 17:51:19,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:19,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:51:19,732 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-13 17:51:19,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:19,783 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:51:19,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19 WrapperNode [2021-11-13 17:51:19,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:19,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:51:19,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:51:19,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:51:19,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:51:19,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:51:19,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:51:19,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:51:19,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:19,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:51:19,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:51:20,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:51:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:51:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:51:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:51:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:51:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:51:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:51:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:51:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-13 17:51:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:51:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:51:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:51:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:51:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:51:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:51:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:51:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-13 17:51:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:51:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:51:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:51:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:51:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:51:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:51:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:51:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:51:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:51:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:51:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:51:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:51:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:51:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:51:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:51:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:51:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:51:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:51:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:51:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:51:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:51:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:51:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:51:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:51:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:51:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:51:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:51:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:51:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:51:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:51:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:51:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:51:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:51:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:51:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:51:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:51:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:51:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:51:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:51:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:51:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:51:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:51:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:51:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:51:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:51:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:51:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:51:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:51:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:51:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:51:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:51:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:51:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:51:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:51:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:51:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:51:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:51:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:51:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:51:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:51:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:51:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:51:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:51:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:51:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:51:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:51:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:51:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:51:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:51:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:51:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:51:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:51:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:51:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:51:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:51:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:51:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:51:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:51:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:51:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:51:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:51:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:51:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:51:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:51:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:51:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:51:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:51:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:51:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:51:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:51:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:51:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:51:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:51:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:51:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:51:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:51:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:51:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:51:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:51:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:51:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:51:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:51:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:51:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:51:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:51:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:51:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-13 17:51:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:51:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:51:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:51:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:51:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:51:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:51:20,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:51:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:51:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:51:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:51:20,411 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-13 17:51:20,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:51:20,796 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 17:51:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:20 BoogieIcfgContainer [2021-11-13 17:51:20,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:51:20,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:51:20,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:51:20,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:51:20,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:51:19" (1/3) ... [2021-11-13 17:51:20,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b24ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:20, skipping insertion in model container [2021-11-13 17:51:20,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19" (2/3) ... [2021-11-13 17:51:20,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b24ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:20, skipping insertion in model container [2021-11-13 17:51:20,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:20" (3/3) ... [2021-11-13 17:51:20,810 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-11-13 17:51:20,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:51:20,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-13 17:51:20,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:51:20,882 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:51:20,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-13 17:51:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 17:51:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 17:51:20,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:20,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:20,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-11-13 17:51:20,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:20,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052802191] [2021-11-13 17:51:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:20,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:21,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:21,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052802191] [2021-11-13 17:51:21,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052802191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:21,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:21,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:51:21,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89145584] [2021-11-13 17:51:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:21,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:21,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:21,297 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:21,607 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-11-13 17:51:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-13 17:51:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:21,621 INFO L225 Difference]: With dead ends: 98 [2021-11-13 17:51:21,621 INFO L226 Difference]: Without dead ends: 90 [2021-11-13 17:51:21,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:21,632 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:21,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 109 Invalid, 102 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 240.81ms Time] [2021-11-13 17:51:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-13 17:51:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-13 17:51:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-11-13 17:51:21,683 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-11-13 17:51:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:21,684 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-11-13 17:51:21,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-11-13 17:51:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:51:21,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:21,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:21,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:51:21,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:21,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-11-13 17:51:21,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:21,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645261474] [2021-11-13 17:51:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:21,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:21,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:21,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645261474] [2021-11-13 17:51:21,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645261474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:21,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:21,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:21,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124891583] [2021-11-13 17:51:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:21,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:21,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:21,816 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:22,140 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-11-13 17:51:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:51:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:22,149 INFO L225 Difference]: With dead ends: 111 [2021-11-13 17:51:22,150 INFO L226 Difference]: Without dead ends: 111 [2021-11-13 17:51:22,156 INFO L932 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 [2021-11-13 17:51:22,159 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 160 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.11ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:22,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 64 Invalid, 198 Unknown, 0 Unchecked, 8.11ms Time], IncrementalHoareTripleChecker [34 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 265.90ms Time] [2021-11-13 17:51:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-13 17:51:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-11-13 17:51:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-11-13 17:51:22,211 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-11-13 17:51:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:22,212 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-11-13 17:51:22,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-11-13 17:51:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:51:22,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:22,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:22,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:51:22,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-11-13 17:51:22,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:22,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869103037] [2021-11-13 17:51:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:22,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:22,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:22,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869103037] [2021-11-13 17:51:22,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869103037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:22,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:22,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:22,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675831708] [2021-11-13 17:51:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:22,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:22,400 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:22,701 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-11-13 17:51:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:51:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:22,704 INFO L225 Difference]: With dead ends: 128 [2021-11-13 17:51:22,704 INFO L226 Difference]: Without dead ends: 128 [2021-11-13 17:51:22,705 INFO L932 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 [2021-11-13 17:51:22,706 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 167 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:22,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 72 Invalid, 213 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [30 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 264.81ms Time] [2021-11-13 17:51:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-13 17:51:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-11-13 17:51:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-11-13 17:51:22,741 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-11-13 17:51:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:22,741 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-11-13 17:51:22,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-11-13 17:51:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 17:51:22,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:22,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:22,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:51:22,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-11-13 17:51:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:22,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64091497] [2021-11-13 17:51:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:22,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:22,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:22,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64091497] [2021-11-13 17:51:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64091497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:22,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:22,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:22,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087524013] [2021-11-13 17:51:22,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:22,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:22,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:22,993 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:23,533 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-11-13 17:51:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-13 17:51:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:23,536 INFO L225 Difference]: With dead ends: 156 [2021-11-13 17:51:23,536 INFO L226 Difference]: Without dead ends: 156 [2021-11-13 17:51:23,537 INFO L932 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 [2021-11-13 17:51:23,538 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 115 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 446.46ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:23,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 260 Invalid, 434 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [14 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 446.46ms Time] [2021-11-13 17:51:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-13 17:51:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-11-13 17:51:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-11-13 17:51:23,560 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-11-13 17:51:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:23,561 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-11-13 17:51:23,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-11-13 17:51:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 17:51:23,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:23,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:23,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:51:23,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-11-13 17:51:23,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:23,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285121782] [2021-11-13 17:51:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:23,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:23,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:23,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285121782] [2021-11-13 17:51:23,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285121782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:23,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:23,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:23,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211167066] [2021-11-13 17:51:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:23,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:23,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:23,858 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:24,418 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-11-13 17:51:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:51:24,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-13 17:51:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:24,421 INFO L225 Difference]: With dead ends: 159 [2021-11-13 17:51:24,421 INFO L226 Difference]: Without dead ends: 159 [2021-11-13 17:51:24,422 INFO L932 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 [2021-11-13 17:51:24,423 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 79 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 425.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:24,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 327 Invalid, 454 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [13 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 425.14ms Time] [2021-11-13 17:51:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-13 17:51:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-11-13 17:51:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-11-13 17:51:24,447 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-11-13 17:51:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:24,449 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-11-13 17:51:24,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-11-13 17:51:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:51:24,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:24,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:24,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:51:24,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-11-13 17:51:24,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:24,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516098821] [2021-11-13 17:51:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:24,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:24,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:24,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516098821] [2021-11-13 17:51:24,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516098821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:24,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:24,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:51:24,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331821878] [2021-11-13 17:51:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:24,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:51:24,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:51:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:24,686 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:24,965 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-11-13 17:51:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-13 17:51:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:24,967 INFO L225 Difference]: With dead ends: 191 [2021-11-13 17:51:24,967 INFO L226 Difference]: Without dead ends: 191 [2021-11-13 17:51:24,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:24,969 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 163 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.71ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:24,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 224 Invalid, 301 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [26 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 248.71ms Time] [2021-11-13 17:51:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-13 17:51:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-11-13 17:51:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-11-13 17:51:24,981 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-11-13 17:51:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:24,982 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-11-13 17:51:24,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-11-13 17:51:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:51:24,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:24,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:24,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:51:24,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-11-13 17:51:24,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:24,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500198820] [2021-11-13 17:51:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:25,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:25,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500198820] [2021-11-13 17:51:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500198820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:25,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:25,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:25,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985789862] [2021-11-13 17:51:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:25,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:25,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:25,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:25,095 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:25,417 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-11-13 17:51:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:25,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 17:51:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:25,419 INFO L225 Difference]: With dead ends: 138 [2021-11-13 17:51:25,420 INFO L226 Difference]: Without dead ends: 138 [2021-11-13 17:51:25,420 INFO L932 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 [2021-11-13 17:51:25,421 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 108 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.88ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:25,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 235 Invalid, 366 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [13 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 270.88ms Time] [2021-11-13 17:51:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-13 17:51:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-11-13 17:51:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-11-13 17:51:25,445 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-11-13 17:51:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:25,446 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-11-13 17:51:25,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-11-13 17:51:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:51:25,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:25,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:25,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:51:25,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-11-13 17:51:25,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:25,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146986838] [2021-11-13 17:51:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:25,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:51:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:25,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:25,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146986838] [2021-11-13 17:51:25,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146986838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:25,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:25,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:51:25,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588650672] [2021-11-13 17:51:25,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:25,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:25,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:25,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:25,643 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:26,046 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-11-13 17:51:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:51:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 17:51:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:26,048 INFO L225 Difference]: With dead ends: 136 [2021-11-13 17:51:26,048 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 17:51:26,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:51:26,050 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 71 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 305.08ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:26,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 295 Invalid, 363 Unknown, 0 Unchecked, 4.68ms Time], IncrementalHoareTripleChecker [9 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 305.08ms Time] [2021-11-13 17:51:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 17:51:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-11-13 17:51:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-11-13 17:51:26,057 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-11-13 17:51:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:26,058 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-11-13 17:51:26,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-11-13 17:51:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:51:26,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:26,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:26,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:51:26,061 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-11-13 17:51:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:26,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826018306] [2021-11-13 17:51:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:26,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:26,081 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:51:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:26,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:51:26,155 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:51:26,157 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-11-13 17:51:26,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-11-13 17:51:26,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-11-13 17:51:26,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-11-13 17:51:26,160 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-11-13 17:51:26,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-11-13 17:51:26,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-11-13 17:51:26,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-11-13 17:51:26,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-11-13 17:51:26,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-11-13 17:51:26,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-11-13 17:51:26,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-11-13 17:51:26,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-11-13 17:51:26,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-11-13 17:51:26,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-11-13 17:51:26,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-11-13 17:51:26,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-11-13 17:51:26,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-11-13 17:51:26,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-11-13 17:51:26,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-11-13 17:51:26,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-11-13 17:51:26,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-11-13 17:51:26,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-11-13 17:51:26,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-11-13 17:51:26,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-11-13 17:51:26,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-11-13 17:51:26,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-11-13 17:51:26,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-11-13 17:51:26,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-11-13 17:51:26,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-11-13 17:51:26,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-11-13 17:51:26,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-11-13 17:51:26,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-11-13 17:51:26,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-11-13 17:51:26,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-11-13 17:51:26,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-11-13 17:51:26,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-11-13 17:51:26,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-11-13 17:51:26,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:51:26,177 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:26,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:51:26,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:51:26 BoogieIcfgContainer [2021-11-13 17:51:26,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:51:26,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:51:26,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:51:26,242 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:51:26,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:20" (3/4) ... [2021-11-13 17:51:26,251 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 17:51:26,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:51:26,252 INFO L158 Benchmark]: Toolchain (without parser) took 7236.22ms. Allocated memory was 94.4MB in the beginning and 159.4MB in the end (delta: 65.0MB). Free memory was 62.5MB in the beginning and 110.5MB in the end (delta: -48.0MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-11-13 17:51:26,252 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 94.4MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:26,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.53ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.2MB in the beginning and 95.2MB in the end (delta: -33.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 17:51:26,256 INFO L158 Benchmark]: Boogie Preprocessor took 130.49ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 92.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:51:26,257 INFO L158 Benchmark]: RCFGBuilder took 880.63ms. Allocated memory is still 127.9MB. Free memory was 92.4MB in the beginning and 67.7MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-13 17:51:26,257 INFO L158 Benchmark]: TraceAbstraction took 5439.78ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 67.3MB in the beginning and 110.5MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:26,258 INFO L158 Benchmark]: Witness Printer took 9.54ms. Allocated memory is still 159.4MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:26,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 94.4MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.53ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.2MB in the beginning and 95.2MB in the end (delta: -33.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 130.49ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 92.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 880.63ms. Allocated memory is still 127.9MB. Free memory was 92.4MB in the beginning and 67.7MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5439.78ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 67.3MB in the beginning and 110.5MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 9.54ms. Allocated memory is still 159.4MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 865 SdHoareTripleChecker+Valid, 2467.78ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 865 mSDsluCounter, 1586 SdHoareTripleChecker+Invalid, 2021.78ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1008 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2288 IncrementalHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 578 mSDtfsCounter, 2288 mSolverCounterSat, 61.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 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 could not prove your program: unable to determine feasibility of some traces [2021-11-13 17:51:26,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:29,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:29,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:29,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:29,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:29,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:29,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:29,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:29,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:29,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:29,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:29,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:29,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:29,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:29,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:29,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:29,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:29,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:29,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:29,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:29,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:29,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:29,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:29,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:29,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:29,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:29,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:29,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:29,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:29,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:29,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:29,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:29,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:29,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:29,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:29,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:29,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:29,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:29,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:29,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:29,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:29,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:51:29,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:29,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:29,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:29,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:29,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:29,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:29,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:29,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:29,426 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:29,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:29,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:29,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:51:29,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:29,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:29,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:29,429 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:51:29,429 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:51:29,430 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:51:29,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:29,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:51:29,430 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:51:29,431 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:51:29,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:29,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:29,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:29,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:29,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:29,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:29,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:29,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:29,433 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:51:29,433 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:51:29,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:29,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:51:29,434 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-11-13 17:51:29,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:30,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:30,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:30,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:30,006 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:30,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-13 17:51:30,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/2bda8fcd8/2a29ff9058de4a01a1b8bec241cda952/FLAGbd3998a21 [2021-11-13 17:51:30,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:30,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-11-13 17:51:30,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/2bda8fcd8/2a29ff9058de4a01a1b8bec241cda952/FLAGbd3998a21 [2021-11-13 17:51:31,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/data/2bda8fcd8/2a29ff9058de4a01a1b8bec241cda952 [2021-11-13 17:51:31,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:31,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:51:31,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:31,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:31,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:31,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f4c21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31, skipping insertion in model container [2021-11-13 17:51:31,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:31,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:31,693 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-13 17:51:31,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:31,716 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:51:31,798 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-11-13 17:51:31,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:31,849 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:51:31,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31 WrapperNode [2021-11-13 17:51:31,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:31,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:51:31,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:51:31,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:51:31,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:51:31,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:51:31,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:51:31,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:51:31,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (1/1) ... [2021-11-13 17:51:31,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:31,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:32,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:51:32,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:51:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:51:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:51:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:51:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:51:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:51:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:51:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:51:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:51:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:51:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-13 17:51:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:51:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:51:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:51:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:51:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:51:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:51:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:51:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-13 17:51:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:51:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:51:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:51:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:51:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:51:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:51:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:51:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:51:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:51:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:51:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:51:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:51:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:51:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:51:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:51:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:51:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:51:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:51:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:51:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:51:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:51:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:51:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:51:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:51:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:51:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:51:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:51:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:51:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:51:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:51:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:51:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:51:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:51:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:51:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:51:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:51:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:51:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:51:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:51:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:51:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:51:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:51:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:51:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:51:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:51:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:51:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:51:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:51:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:51:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:51:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:51:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:51:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:51:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:51:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:51:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:51:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:51:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:51:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:51:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:51:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:51:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:51:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:51:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:51:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:51:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:51:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:51:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:51:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:51:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:51:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:51:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:51:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:51:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:51:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:51:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:51:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-13 17:51:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:51:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:51:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:51:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:51:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:51:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:51:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:51:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:51:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:51:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:51:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:51:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:51:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:51:32,472 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-13 17:51:33,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:51:33,037 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 17:51:33,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:33 BoogieIcfgContainer [2021-11-13 17:51:33,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:51:33,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:51:33,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:51:33,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:51:33,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:51:31" (1/3) ... [2021-11-13 17:51:33,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646ec757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:33, skipping insertion in model container [2021-11-13 17:51:33,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:31" (2/3) ... [2021-11-13 17:51:33,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646ec757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:33, skipping insertion in model container [2021-11-13 17:51:33,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:33" (3/3) ... [2021-11-13 17:51:33,050 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-11-13 17:51:33,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:51:33,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-13 17:51:33,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:51:33,122 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:51:33,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-13 17:51:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 17:51:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:51:33,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:33,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:33,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-11-13 17:51:33,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:33,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45654923] [2021-11-13 17:51:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:33,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:33,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:51:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:33,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:33,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:33,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:33,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:33,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:33,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45654923] [2021-11-13 17:51:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45654923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:33,694 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:33,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:51:33,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985065423] [2021-11-13 17:51:33,697 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:33,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:33,748 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:34,221 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-11-13 17:51:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:34,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-13 17:51:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:34,242 INFO L225 Difference]: With dead ends: 111 [2021-11-13 17:51:34,242 INFO L226 Difference]: Without dead ends: 103 [2021-11-13 17:51:34,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:34,251 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 149 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.95ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 398.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:34,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 70 Invalid, 124 Unknown, 0 Unchecked, 9.95ms Time], IncrementalHoareTripleChecker [33 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 398.98ms Time] [2021-11-13 17:51:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-13 17:51:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-11-13 17:51:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-11-13 17:51:34,323 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-11-13 17:51:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:34,324 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-11-13 17:51:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-11-13 17:51:34,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:51:34,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:34,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:34,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:34,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:34,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-11-13 17:51:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:34,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617778608] [2021-11-13 17:51:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:34,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:34,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:34,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:51:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:34,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:51:34,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:34,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:34,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:35,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:35,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617778608] [2021-11-13 17:51:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617778608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:35,038 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:35,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:51:35,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425499461] [2021-11-13 17:51:35,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:35,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:35,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:35,044 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:35,982 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-11-13 17:51:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-13 17:51:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:35,986 INFO L225 Difference]: With dead ends: 119 [2021-11-13 17:51:35,986 INFO L226 Difference]: Without dead ends: 119 [2021-11-13 17:51:35,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:51:35,988 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 275 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 682.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.65ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 815.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:35,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 74 Invalid, 187 Unknown, 0 Unchecked, 7.65ms Time], IncrementalHoareTripleChecker [47 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 815.31ms Time] [2021-11-13 17:51:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-13 17:51:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-11-13 17:51:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-11-13 17:51:36,002 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-11-13 17:51:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:36,003 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-11-13 17:51:36,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-11-13 17:51:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:51:36,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:36,005 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:36,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:36,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:36,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-11-13 17:51:36,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:36,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636319233] [2021-11-13 17:51:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:36,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:36,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:36,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:36,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:51:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:51:36,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:36,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:36,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 17:51:36,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 17:51:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:36,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:36,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:36,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636319233] [2021-11-13 17:51:36,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636319233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:36,671 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:36,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:51:36,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078990264] [2021-11-13 17:51:36,672 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:36,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:36,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:36,676 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:37,497 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-11-13 17:51:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:51:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:37,501 INFO L225 Difference]: With dead ends: 140 [2021-11-13 17:51:37,501 INFO L226 Difference]: Without dead ends: 140 [2021-11-13 17:51:37,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:37,503 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 102 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 604.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 727.82ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:37,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 200 Invalid, 278 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [13 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 727.82ms Time] [2021-11-13 17:51:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-13 17:51:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-11-13 17:51:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-11-13 17:51:37,525 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-11-13 17:51:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:37,526 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-11-13 17:51:37,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-11-13 17:51:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:51:37,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:37,532 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:37,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 17:51:37,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:37,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-11-13 17:51:37,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:37,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492921924] [2021-11-13 17:51:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:37,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:37,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:37,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:37,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:51:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:37,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:51:37,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:37,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:38,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:51:38,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 17:51:38,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 17:51:38,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:51:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:38,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:38,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:38,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492921924] [2021-11-13 17:51:38,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492921924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:38,538 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:38,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-13 17:51:38,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229609284] [2021-11-13 17:51:38,538 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:38,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:51:38,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:51:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:51:38,550 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:40,543 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-13 17:51:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:51:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:51:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:40,546 INFO L225 Difference]: With dead ends: 145 [2021-11-13 17:51:40,546 INFO L226 Difference]: Without dead ends: 145 [2021-11-13 17:51:40,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:51:40,548 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 149 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1520.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1708.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:40,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 327 Invalid, 377 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [22 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1708.90ms Time] [2021-11-13 17:51:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-13 17:51:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-11-13 17:51:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-11-13 17:51:40,559 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-11-13 17:51:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:40,560 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-11-13 17:51:40,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-11-13 17:51:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:51:40,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:40,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:40,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:40,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:40,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-11-13 17:51:40,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:40,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123441815] [2021-11-13 17:51:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:40,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:40,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:40,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:51:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:40,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:51:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:41,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 17:51:41,119 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-13 17:51:41,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-13 17:51:41,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-13 17:51:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:41,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 140 [2021-11-13 17:51:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:41,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123441815] [2021-11-13 17:51:41,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123441815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:41,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:41,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-13 17:51:41,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241285409] [2021-11-13 17:51:41,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:41,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:51:41,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:51:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:51:41,500 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:42,280 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-11-13 17:51:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:51:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-13 17:51:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:42,284 INFO L225 Difference]: With dead ends: 192 [2021-11-13 17:51:42,284 INFO L226 Difference]: Without dead ends: 192 [2021-11-13 17:51:42,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:51:42,286 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 212 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 559.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.88ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 654.27ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:42,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 252 Invalid, 313 Unknown, 0 Unchecked, 6.88ms Time], IncrementalHoareTripleChecker [42 Valid, 234 Invalid, 0 Unknown, 37 Unchecked, 654.27ms Time] [2021-11-13 17:51:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-13 17:51:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-11-13 17:51:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-11-13 17:51:42,307 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-11-13 17:51:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:42,307 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-11-13 17:51:42,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-11-13 17:51:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:51:42,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:42,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:42,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:42,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:42,510 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-11-13 17:51:42,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:42,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036107495] [2021-11-13 17:51:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:42,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:42,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:42,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:51:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:42,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:51:42,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:42,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:42,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 17:51:42,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:51:42,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 17:51:42,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:51:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:42,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:43,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:43,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036107495] [2021-11-13 17:51:43,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036107495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:43,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:43,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-13 17:51:43,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350954097] [2021-11-13 17:51:43,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:43,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:51:43,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:51:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:51:43,249 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:45,002 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-11-13 17:51:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:51:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-13 17:51:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:45,004 INFO L225 Difference]: With dead ends: 124 [2021-11-13 17:51:45,004 INFO L226 Difference]: Without dead ends: 124 [2021-11-13 17:51:45,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:51:45,005 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1358.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.76ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1522.11ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:45,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 360 Invalid, 389 Unknown, 0 Unchecked, 5.76ms Time], IncrementalHoareTripleChecker [14 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1522.11ms Time] [2021-11-13 17:51:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-13 17:51:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-11-13 17:51:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-11-13 17:51:45,015 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-11-13 17:51:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:45,018 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-11-13 17:51:45,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-11-13 17:51:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:51:45,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:45,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:45,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:45,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:45,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-11-13 17:51:45,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:45,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129113871] [2021-11-13 17:51:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:45,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:45,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:45,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:45,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:51:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:45,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:51:45,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:45,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:51:45,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 17:51:45,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 17:51:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:45,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:45,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:45,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129113871] [2021-11-13 17:51:45,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129113871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:45,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:45,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:51:45,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232584945] [2021-11-13 17:51:45,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:45,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:45,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:45,609 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:46,184 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-11-13 17:51:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:46,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-13 17:51:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:46,186 INFO L225 Difference]: With dead ends: 113 [2021-11-13 17:51:46,187 INFO L226 Difference]: Without dead ends: 113 [2021-11-13 17:51:46,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:46,188 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 441.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:46,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 181 Invalid, 221 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 512.10ms Time] [2021-11-13 17:51:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-13 17:51:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-11-13 17:51:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-11-13 17:51:46,196 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-11-13 17:51:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:46,197 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-11-13 17:51:46,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-11-13 17:51:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 17:51:46,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:46,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:46,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:46,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:46,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-11-13 17:51:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-11-13 17:51:46,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:46,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336833684] [2021-11-13 17:51:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:46,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:46,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:46,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:51:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:46,574 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:51:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:46,654 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:51:46,654 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:51:46,655 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-11-13 17:51:46,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-11-13 17:51:46,658 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-11-13 17:51:46,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-11-13 17:51:46,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-11-13 17:51:46,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-11-13 17:51:46,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-11-13 17:51:46,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-11-13 17:51:46,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-11-13 17:51:46,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-11-13 17:51:46,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-11-13 17:51:46,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-11-13 17:51:46,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-11-13 17:51:46,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-11-13 17:51:46,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-11-13 17:51:46,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-11-13 17:51:46,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-11-13 17:51:46,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-11-13 17:51:46,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-11-13 17:51:46,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-11-13 17:51:46,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-11-13 17:51:46,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-11-13 17:51:46,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-11-13 17:51:46,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-11-13 17:51:46,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-11-13 17:51:46,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-11-13 17:51:46,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-11-13 17:51:46,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-11-13 17:51:46,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-11-13 17:51:46,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-11-13 17:51:46,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-11-13 17:51:46,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-11-13 17:51:46,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-11-13 17:51:46,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-11-13 17:51:46,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-11-13 17:51:46,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-11-13 17:51:46,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-11-13 17:51:46,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-11-13 17:51:46,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:46,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:46,882 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:46,885 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:51:46,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:51:46 BoogieIcfgContainer [2021-11-13 17:51:46,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:51:46,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:51:46,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:51:46,935 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:51:46,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:33" (3/4) ... [2021-11-13 17:51:46,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 17:51:46,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:51:46,940 INFO L158 Benchmark]: Toolchain (without parser) took 15779.13ms. Allocated memory was 52.4MB in the beginning and 92.3MB in the end (delta: 39.8MB). Free memory was 27.8MB in the beginning and 56.9MB in the end (delta: -29.1MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:46,941 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory is still 33.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:46,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.21ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 37.6MB in the end (delta: -10.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-13 17:51:46,942 INFO L158 Benchmark]: Boogie Preprocessor took 115.77ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 34.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:51:46,942 INFO L158 Benchmark]: RCFGBuilder took 1072.25ms. Allocated memory is still 62.9MB. Free memory was 34.4MB in the beginning and 32.1MB in the end (delta: 2.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-11-13 17:51:46,943 INFO L158 Benchmark]: TraceAbstraction took 13891.24ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 31.7MB in the beginning and 57.5MB in the end (delta: -25.9MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-13 17:51:46,943 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 92.3MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:46,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory is still 33.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.21ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 37.6MB in the end (delta: -10.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.77ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 34.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1072.25ms. Allocated memory is still 62.9MB. Free memory was 34.4MB in the beginning and 32.1MB in the end (delta: 2.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13891.24ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 31.7MB in the beginning and 57.5MB in the end (delta: -25.9MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. * Witness Printer took 5.36ms. Allocated memory is still 92.3MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L555] p->n = 0 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L559] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 13.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 6339.49ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 1464 SdHoareTripleChecker+Invalid, 5483.05ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37 IncrementalHoareTripleChecker+Unchecked, 1058 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1669 IncrementalHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 406 mSDtfsCounter, 1669 mSolverCounterSat, 45.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, 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, 7 MinimizatonAttempts, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 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 could not prove your program: unable to determine feasibility of some traces [2021-11-13 17:51:47,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc416974-7131-4495-9f8f-33b95c88c523/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample