./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer --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 9181148b15e14afa3f85d7f56edfe966974a0845 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 04:35:56,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:35:56,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:35:56,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:35:56,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:35:56,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:35:56,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:35:56,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:35:56,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:35:56,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:35:56,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:35:56,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:35:56,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:35:56,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:35:56,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:35:56,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:35:56,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:35:56,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:35:56,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:35:56,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:35:56,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:35:56,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:35:56,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:35:56,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:35:56,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:35:56,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:35:56,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:35:56,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:35:56,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:35:56,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:35:56,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:35:56,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:35:56,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:35:56,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:35:56,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:35:56,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:35:56,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:35:56,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:35:56,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:35:56,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:35:56,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:35:56,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 04:35:56,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:35:56,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:35:56,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:35:56,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:35:56,322 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:35:56,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:35:56,322 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:35:56,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:35:56,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:35:56,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:35:56,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:35:56,324 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 04:35:56,324 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 04:35:56,324 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 04:35:56,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:35:56,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:35:56,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:35:56,325 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:35:56,325 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:35:56,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:35:56,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:35:56,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:35:56,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:35:56,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:35:56,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:35:56,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:35:56,326 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:35:56,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:35:56,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:35:56,327 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-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 -> 9181148b15e14afa3f85d7f56edfe966974a0845 [2019-11-20 04:35:56,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:35:56,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:35:56,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:35:56,474 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:35:56,474 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:35:56,475 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2019-11-20 04:35:56,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/data/7437eaafa/3230f4439f99490ba44645707176a0d6/FLAG247df6962 [2019-11-20 04:35:57,006 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:35:57,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2019-11-20 04:35:57,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/data/7437eaafa/3230f4439f99490ba44645707176a0d6/FLAG247df6962 [2019-11-20 04:35:57,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/data/7437eaafa/3230f4439f99490ba44645707176a0d6 [2019-11-20 04:35:57,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:35:57,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 04:35:57,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:35:57,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:35:57,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:35:57,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:35:57" (1/1) ... [2019-11-20 04:35:57,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae4949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:57, skipping insertion in model container [2019-11-20 04:35:57,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:35:57" (1/1) ... [2019-11-20 04:35:57,510 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:35:57,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:35:58,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:35:58,144 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:35:58,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:35:58,319 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:35:58,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58 WrapperNode [2019-11-20 04:35:58,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:35:58,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:35:58,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:35:58,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:35:58,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... [2019-11-20 04:35:58,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:35:58,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:35:58,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:35:58,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:35:58,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:35:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 04:35:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:35:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 04:35:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 04:35:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 04:35:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 04:35:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 04:35:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 04:35:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2019-11-20 04:35:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2019-11-20 04:35:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-20 04:35:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-20 04:35:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-20 04:35:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-20 04:35:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-20 04:35:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-20 04:35:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-20 04:35:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-20 04:35:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2019-11-20 04:35:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2019-11-20 04:35:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2019-11-20 04:35:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2019-11-20 04:35:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2019-11-20 04:35:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2019-11-20 04:35:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2019-11-20 04:35:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2019-11-20 04:35:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-20 04:35:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-20 04:35:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 04:35:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 04:35:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 04:35:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 04:35:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 04:35:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 04:35:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 04:35:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 04:35:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 04:35:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 04:35:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 04:35:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 04:35:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 04:35:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 04:35:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 04:35:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 04:35:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 04:35:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 04:35:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 04:35:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 04:35:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 04:35:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 04:35:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 04:35:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 04:35:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 04:35:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 04:35:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 04:35:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 04:35:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 04:35:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 04:35:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 04:35:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 04:35:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 04:35:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 04:35:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 04:35:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 04:35:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 04:35:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 04:35:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 04:35:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 04:35:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 04:35:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 04:35:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 04:35:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-20 04:35:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-20 04:35:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-20 04:35:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2019-11-20 04:35:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2019-11-20 04:35:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2019-11-20 04:35:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:35:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 04:35:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:35:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-20 04:35:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-20 04:35:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2019-11-20 04:35:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2019-11-20 04:35:59,053 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 04:35:59,434 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 04:35:59,776 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:35:59,776 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 04:35:59,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:35:59 BoogieIcfgContainer [2019-11-20 04:35:59,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:35:59,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:35:59,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:35:59,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:35:59,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:35:57" (1/3) ... [2019-11-20 04:35:59,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524dc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:35:59, skipping insertion in model container [2019-11-20 04:35:59,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:35:58" (2/3) ... [2019-11-20 04:35:59,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524dc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:35:59, skipping insertion in model container [2019-11-20 04:35:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:35:59" (3/3) ... [2019-11-20 04:35:59,793 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-1.i [2019-11-20 04:35:59,804 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:35:59,813 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-20 04:35:59,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-20 04:35:59,840 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:35:59,841 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 04:35:59,841 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:35:59,841 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:35:59,841 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:35:59,841 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:35:59,841 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:35:59,841 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:35:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2019-11-20 04:35:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 04:35:59,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:35:59,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:35:59,878 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:35:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:35:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash 437307378, now seen corresponding path program 1 times [2019-11-20 04:35:59,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:35:59,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [976021562] [2019-11-20 04:35:59,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:00,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:36:00,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:00,284 INFO L377 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 [2019-11-20 04:36:00,284 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:00,291 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:00,291 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:00,292 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:00,325 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:00,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976021562] [2019-11-20 04:36:00,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:00,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 04:36:00,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215511416] [2019-11-20 04:36:00,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:00,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:00,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:00,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:00,410 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 5 states. [2019-11-20 04:36:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:00,770 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2019-11-20 04:36:00,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:00,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 04:36:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:00,787 INFO L225 Difference]: With dead ends: 156 [2019-11-20 04:36:00,788 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 04:36:00,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 04:36:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2019-11-20 04:36:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-20 04:36:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2019-11-20 04:36:00,879 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 17 [2019-11-20 04:36:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:00,880 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2019-11-20 04:36:00,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2019-11-20 04:36:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 04:36:00,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:00,881 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:01,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:01,085 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:01,085 INFO L82 PathProgramCache]: Analyzing trace with hash 437307379, now seen corresponding path program 1 times [2019-11-20 04:36:01,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:01,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [882737275] [2019-11-20 04:36:01,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:01,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 04:36:01,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:01,386 INFO L377 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 [2019-11-20 04:36:01,386 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:01,393 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:01,394 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:01,394 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:01,451 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:01,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882737275] [2019-11-20 04:36:01,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:01,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-20 04:36:01,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419375577] [2019-11-20 04:36:01,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 04:36:01,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:01,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 04:36:01,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 04:36:01,852 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 10 states. [2019-11-20 04:36:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:02,506 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2019-11-20 04:36:02,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:36:02,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-20 04:36:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:02,510 INFO L225 Difference]: With dead ends: 152 [2019-11-20 04:36:02,510 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 04:36:02,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:36:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 04:36:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2019-11-20 04:36:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-20 04:36:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2019-11-20 04:36:02,523 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 17 [2019-11-20 04:36:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:02,523 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2019-11-20 04:36:02,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 04:36:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2019-11-20 04:36:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 04:36:02,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:02,524 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:02,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:02,728 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash 465936529, now seen corresponding path program 1 times [2019-11-20 04:36:02,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:02,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [677581603] [2019-11-20 04:36:02,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:02,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:36:02,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:03,023 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:03,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [677581603] [2019-11-20 04:36:03,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:03,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 04:36:03,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990776877] [2019-11-20 04:36:03,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:03,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:03,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:03,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:03,061 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 5 states. [2019-11-20 04:36:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:03,092 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2019-11-20 04:36:03,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:03,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-20 04:36:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:03,094 INFO L225 Difference]: With dead ends: 146 [2019-11-20 04:36:03,095 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 04:36:03,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 04:36:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2019-11-20 04:36:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 04:36:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-11-20 04:36:03,104 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 17 [2019-11-20 04:36:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:03,104 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2019-11-20 04:36:03,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2019-11-20 04:36:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 04:36:03,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:03,105 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:03,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:03,306 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:03,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1350751080, now seen corresponding path program 1 times [2019-11-20 04:36:03,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:03,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [134899646] [2019-11-20 04:36:03,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:03,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:36:03,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:03,570 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:03,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134899646] [2019-11-20 04:36:03,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:03,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 04:36:03,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342501107] [2019-11-20 04:36:03,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:03,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:03,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:03,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:03,674 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 5 states. [2019-11-20 04:36:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:03,700 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2019-11-20 04:36:03,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:03,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-20 04:36:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:03,705 INFO L225 Difference]: With dead ends: 146 [2019-11-20 04:36:03,705 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 04:36:03,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 04:36:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2019-11-20 04:36:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 04:36:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2019-11-20 04:36:03,721 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 27 [2019-11-20 04:36:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:03,722 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2019-11-20 04:36:03,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2019-11-20 04:36:03,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 04:36:03,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:03,724 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:03,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:03,927 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:03,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1861285257, now seen corresponding path program 1 times [2019-11-20 04:36:03,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:03,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1220111354] [2019-11-20 04:36:03,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:04,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 04:36:04,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:04,273 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:04,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1220111354] [2019-11-20 04:36:04,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:04,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 04:36:04,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708271027] [2019-11-20 04:36:04,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 04:36:04,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:04,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:36:04,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:04,330 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 7 states. [2019-11-20 04:36:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:04,422 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2019-11-20 04:36:04,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 04:36:04,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 04:36:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:04,425 INFO L225 Difference]: With dead ends: 160 [2019-11-20 04:36:04,426 INFO L226 Difference]: Without dead ends: 160 [2019-11-20 04:36:04,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:36:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-20 04:36:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 153. [2019-11-20 04:36:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 04:36:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2019-11-20 04:36:04,448 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 27 [2019-11-20 04:36:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:04,449 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2019-11-20 04:36:04,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 04:36:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2019-11-20 04:36:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 04:36:04,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:04,451 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:04,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:04,654 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash -371919445, now seen corresponding path program 1 times [2019-11-20 04:36:04,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:04,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [498412790] [2019-11-20 04:36:04,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:04,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:04,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:04,879 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:04,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [498412790] [2019-11-20 04:36:04,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:04,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 04:36:04,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384348987] [2019-11-20 04:36:04,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:36:04,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:36:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:36:04,933 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand 6 states. [2019-11-20 04:36:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:04,975 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2019-11-20 04:36:04,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:36:04,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-20 04:36:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:04,983 INFO L225 Difference]: With dead ends: 159 [2019-11-20 04:36:04,983 INFO L226 Difference]: Without dead ends: 155 [2019-11-20 04:36:04,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-20 04:36:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-11-20 04:36:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-11-20 04:36:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2019-11-20 04:36:04,990 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 32 [2019-11-20 04:36:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:04,991 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2019-11-20 04:36:04,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:36:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2019-11-20 04:36:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 04:36:04,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:04,992 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:05,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:05,202 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:05,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2114850165, now seen corresponding path program 1 times [2019-11-20 04:36:05,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:05,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [300756493] [2019-11-20 04:36:05,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:05,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:36:05,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:05,478 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:05,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [300756493] [2019-11-20 04:36:05,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:36:05,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 04:36:05,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92470841] [2019-11-20 04:36:05,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 04:36:05,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 04:36:05,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-20 04:36:05,593 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand 10 states. [2019-11-20 04:36:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:05,804 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2019-11-20 04:36:05,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:36:05,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-11-20 04:36:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:05,807 INFO L225 Difference]: With dead ends: 163 [2019-11-20 04:36:05,807 INFO L226 Difference]: Without dead ends: 159 [2019-11-20 04:36:05,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-20 04:36:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-11-20 04:36:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-20 04:36:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2019-11-20 04:36:05,829 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 34 [2019-11-20 04:36:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:05,830 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2019-11-20 04:36:05,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 04:36:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2019-11-20 04:36:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 04:36:05,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:05,831 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:06,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:06,045 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash 349418536, now seen corresponding path program 1 times [2019-11-20 04:36:06,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:06,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1958623881] [2019-11-20 04:36:06,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:06,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 04:36:06,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:06,363 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:06,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958623881] [2019-11-20 04:36:06,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:06,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 04:36:06,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802918483] [2019-11-20 04:36:06,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 04:36:06,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:06,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:36:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:06,441 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand 7 states. [2019-11-20 04:36:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:06,507 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2019-11-20 04:36:06,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 04:36:06,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-20 04:36:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:06,510 INFO L225 Difference]: With dead ends: 169 [2019-11-20 04:36:06,510 INFO L226 Difference]: Without dead ends: 169 [2019-11-20 04:36:06,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:36:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-20 04:36:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2019-11-20 04:36:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-11-20 04:36:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 172 transitions. [2019-11-20 04:36:06,523 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 172 transitions. Word has length 36 [2019-11-20 04:36:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:06,524 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 172 transitions. [2019-11-20 04:36:06,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 04:36:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 172 transitions. [2019-11-20 04:36:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 04:36:06,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:06,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:06,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:06,736 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1191975232, now seen corresponding path program 1 times [2019-11-20 04:36:06,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:06,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1007857803] [2019-11-20 04:36:06,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:06,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:36:06,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:06,941 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:07,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1007857803] [2019-11-20 04:36:07,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:07,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 04:36:07,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921128162] [2019-11-20 04:36:07,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:36:07,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:07,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:36:07,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:07,051 INFO L87 Difference]: Start difference. First operand 165 states and 172 transitions. Second operand 3 states. [2019-11-20 04:36:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:07,209 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2019-11-20 04:36:07,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:36:07,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-20 04:36:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:07,212 INFO L225 Difference]: With dead ends: 176 [2019-11-20 04:36:07,212 INFO L226 Difference]: Without dead ends: 154 [2019-11-20 04:36:07,212 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-20 04:36:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2019-11-20 04:36:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 04:36:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2019-11-20 04:36:07,216 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 34 [2019-11-20 04:36:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:07,216 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2019-11-20 04:36:07,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:36:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2019-11-20 04:36:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 04:36:07,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:07,217 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:07,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:07,418 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1672035253, now seen corresponding path program 2 times [2019-11-20 04:36:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:07,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [19799695] [2019-11-20 04:36:07,419 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:07,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 04:36:07,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:07,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:36:07,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:07,638 INFO L377 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 [2019-11-20 04:36:07,638 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:07,640 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:07,641 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:07,641 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 04:36:07,786 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 04:36:07,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [19799695] [2019-11-20 04:36:07,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:07,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-20 04:36:07,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033275661] [2019-11-20 04:36:07,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 04:36:07,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:07,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 04:36:07,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:07,865 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand 13 states. [2019-11-20 04:36:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:08,961 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2019-11-20 04:36:08,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:36:08,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-11-20 04:36:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:08,963 INFO L225 Difference]: With dead ends: 157 [2019-11-20 04:36:08,963 INFO L226 Difference]: Without dead ends: 157 [2019-11-20 04:36:08,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-20 04:36:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-20 04:36:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2019-11-20 04:36:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 04:36:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2019-11-20 04:36:08,969 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 38 [2019-11-20 04:36:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:08,969 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2019-11-20 04:36:08,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 04:36:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2019-11-20 04:36:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 04:36:08,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:08,970 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:09,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:09,176 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:09,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1672035252, now seen corresponding path program 1 times [2019-11-20 04:36:09,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:09,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [233496592] [2019-11-20 04:36:09,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:09,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:36:09,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:09,487 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:09,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [233496592] [2019-11-20 04:36:09,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:36:09,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-20 04:36:09,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165718973] [2019-11-20 04:36:09,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 04:36:09,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 04:36:09,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-11-20 04:36:09,886 INFO L87 Difference]: Start difference. First operand 145 states and 151 transitions. Second operand 18 states. [2019-11-20 04:36:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:10,741 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2019-11-20 04:36:10,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 04:36:10,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-11-20 04:36:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:10,746 INFO L225 Difference]: With dead ends: 157 [2019-11-20 04:36:10,748 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 04:36:10,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-11-20 04:36:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 04:36:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-20 04:36:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 04:36:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2019-11-20 04:36:10,756 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 38 [2019-11-20 04:36:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:10,757 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2019-11-20 04:36:10,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 04:36:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2019-11-20 04:36:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 04:36:10,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:10,760 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:10,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:10,963 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash -120338484, now seen corresponding path program 2 times [2019-11-20 04:36:10,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:10,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [122128329] [2019-11-20 04:36:10,964 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:11,201 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 04:36:11,201 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:11,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 04:36:11,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:11,224 INFO L377 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 [2019-11-20 04:36:11,224 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:11,232 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:11,232 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:11,233 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-20 04:36:11,520 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-20 04:36:12,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [122128329] [2019-11-20 04:36:12,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:12,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-20 04:36:12,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514914421] [2019-11-20 04:36:12,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 04:36:12,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:12,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 04:36:12,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-20 04:36:12,338 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand 23 states. [2019-11-20 04:36:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:14,746 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2019-11-20 04:36:14,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:36:14,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2019-11-20 04:36:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:14,748 INFO L225 Difference]: With dead ends: 152 [2019-11-20 04:36:14,748 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 04:36:14,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-20 04:36:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 04:36:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-11-20 04:36:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-20 04:36:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2019-11-20 04:36:14,754 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 46 [2019-11-20 04:36:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:14,754 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2019-11-20 04:36:14,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 04:36:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2019-11-20 04:36:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-20 04:36:14,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:14,760 INFO L410 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:14,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:14,964 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:14,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:14,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2099111874, now seen corresponding path program 1 times [2019-11-20 04:36:14,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:14,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [545705186] [2019-11-20 04:36:14,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:15,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 04:36:15,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:15,436 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:16,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545705186] [2019-11-20 04:36:16,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:36:16,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-11-20 04:36:16,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884076569] [2019-11-20 04:36:16,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 04:36:16,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 04:36:16,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 04:36:16,297 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand 34 states. [2019-11-20 04:36:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:17,389 INFO L93 Difference]: Finished difference Result 158 states and 164 transitions. [2019-11-20 04:36:17,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 04:36:17,397 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 51 [2019-11-20 04:36:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:17,398 INFO L225 Difference]: With dead ends: 158 [2019-11-20 04:36:17,399 INFO L226 Difference]: Without dead ends: 154 [2019-11-20 04:36:17,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 04:36:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-20 04:36:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-11-20 04:36:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-20 04:36:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2019-11-20 04:36:17,413 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 51 [2019-11-20 04:36:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:17,414 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2019-11-20 04:36:17,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 04:36:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2019-11-20 04:36:17,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 04:36:17,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:17,415 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:17,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:17,619 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1508323166, now seen corresponding path program 2 times [2019-11-20 04:36:17,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:17,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1039299922] [2019-11-20 04:36:17,620 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:17,856 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 04:36:17,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:17,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:36:17,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:17,867 INFO L377 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 [2019-11-20 04:36:17,867 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:17,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:17,870 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:17,870 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:18,090 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:18,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1039299922] [2019-11-20 04:36:18,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:18,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 12 [2019-11-20 04:36:18,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264087382] [2019-11-20 04:36:18,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 04:36:18,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 04:36:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:18,171 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand 13 states. [2019-11-20 04:36:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:18,975 INFO L93 Difference]: Finished difference Result 164 states and 169 transitions. [2019-11-20 04:36:18,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:36:18,975 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-20 04:36:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:18,976 INFO L225 Difference]: With dead ends: 164 [2019-11-20 04:36:18,976 INFO L226 Difference]: Without dead ends: 164 [2019-11-20 04:36:18,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-20 04:36:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-20 04:36:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2019-11-20 04:36:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-20 04:36:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2019-11-20 04:36:18,982 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 53 [2019-11-20 04:36:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:18,982 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2019-11-20 04:36:18,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 04:36:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2019-11-20 04:36:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 04:36:18,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:18,983 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:19,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:19,187 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:19,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1508323167, now seen corresponding path program 1 times [2019-11-20 04:36:19,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:19,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1855660017] [2019-11-20 04:36:19,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:19,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 04:36:19,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:19,557 INFO L377 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 [2019-11-20 04:36:19,558 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:19,563 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:19,563 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:19,563 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:19,755 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:20,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1855660017] [2019-11-20 04:36:20,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:20,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2019-11-20 04:36:20,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134612859] [2019-11-20 04:36:20,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 04:36:20,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:20,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 04:36:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2019-11-20 04:36:20,537 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand 23 states. [2019-11-20 04:36:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:22,698 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2019-11-20 04:36:22,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:36:22,698 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2019-11-20 04:36:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:22,699 INFO L225 Difference]: With dead ends: 150 [2019-11-20 04:36:22,700 INFO L226 Difference]: Without dead ends: 150 [2019-11-20 04:36:22,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2019-11-20 04:36:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-20 04:36:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-20 04:36:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-20 04:36:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2019-11-20 04:36:22,706 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 53 [2019-11-20 04:36:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:22,707 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2019-11-20 04:36:22,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 04:36:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2019-11-20 04:36:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-20 04:36:22,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:22,713 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:22,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:22,917 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:22,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1829486613, now seen corresponding path program 1 times [2019-11-20 04:36:22,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:22,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1753308871] [2019-11-20 04:36:22,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:23,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:36:23,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:23,161 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:23,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753308871] [2019-11-20 04:36:23,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:23,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-20 04:36:23,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75027356] [2019-11-20 04:36:23,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 04:36:23,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:23,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:36:23,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:36:23,282 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand 8 states. [2019-11-20 04:36:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:23,320 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2019-11-20 04:36:23,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:36:23,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2019-11-20 04:36:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:23,323 INFO L225 Difference]: With dead ends: 152 [2019-11-20 04:36:23,323 INFO L226 Difference]: Without dead ends: 150 [2019-11-20 04:36:23,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:36:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-20 04:36:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-20 04:36:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-20 04:36:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 155 transitions. [2019-11-20 04:36:23,328 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 155 transitions. Word has length 56 [2019-11-20 04:36:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:23,328 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 155 transitions. [2019-11-20 04:36:23,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 04:36:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 155 transitions. [2019-11-20 04:36:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-20 04:36:23,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:23,329 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:23,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:23,535 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:23,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1246372516, now seen corresponding path program 1 times [2019-11-20 04:36:23,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:23,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [519963753] [2019-11-20 04:36:23,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:23,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:36:23,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:23,800 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:23,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:36:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:23,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [519963753] [2019-11-20 04:36:23,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:23,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2019-11-20 04:36:23,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801975866] [2019-11-20 04:36:23,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 04:36:23,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:23,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:36:23,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:36:23,998 INFO L87 Difference]: Start difference. First operand 150 states and 155 transitions. Second operand 11 states. [2019-11-20 04:36:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:24,067 INFO L93 Difference]: Finished difference Result 154 states and 158 transitions. [2019-11-20 04:36:24,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 04:36:24,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2019-11-20 04:36:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:24,068 INFO L225 Difference]: With dead ends: 154 [2019-11-20 04:36:24,068 INFO L226 Difference]: Without dead ends: 150 [2019-11-20 04:36:24,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-20 04:36:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-11-20 04:36:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-20 04:36:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2019-11-20 04:36:24,072 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 61 [2019-11-20 04:36:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:24,073 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2019-11-20 04:36:24,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 04:36:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2019-11-20 04:36:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-20 04:36:24,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:24,074 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:24,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:24,277 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash 822295473, now seen corresponding path program 1 times [2019-11-20 04:36:24,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:24,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [392682300] [2019-11-20 04:36:24,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:24,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 04:36:24,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:24,636 INFO L377 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 [2019-11-20 04:36:24,636 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:24,638 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:24,638 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:24,639 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:25,006 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:25,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [392682300] [2019-11-20 04:36:25,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:25,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 12] imperfect sequences [] total 17 [2019-11-20 04:36:25,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039184100] [2019-11-20 04:36:25,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 04:36:25,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 04:36:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2019-11-20 04:36:25,380 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 18 states. [2019-11-20 04:36:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:26,669 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2019-11-20 04:36:26,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 04:36:26,669 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 72 [2019-11-20 04:36:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:26,670 INFO L225 Difference]: With dead ends: 160 [2019-11-20 04:36:26,670 INFO L226 Difference]: Without dead ends: 160 [2019-11-20 04:36:26,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-20 04:36:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-20 04:36:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2019-11-20 04:36:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-20 04:36:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2019-11-20 04:36:26,675 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 72 [2019-11-20 04:36:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:26,675 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2019-11-20 04:36:26,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 04:36:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2019-11-20 04:36:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-20 04:36:26,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:26,677 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:26,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:26,877 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 822295474, now seen corresponding path program 1 times [2019-11-20 04:36:26,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:26,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1186704116] [2019-11-20 04:36:26,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:27,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-20 04:36:27,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:27,281 INFO L377 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 [2019-11-20 04:36:27,282 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:27,286 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:27,286 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:27,286 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:27,788 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:29,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186704116] [2019-11-20 04:36:29,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:29,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 14] imperfect sequences [] total 30 [2019-11-20 04:36:29,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698304757] [2019-11-20 04:36:29,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-20 04:36:29,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:29,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-20 04:36:29,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2019-11-20 04:36:29,268 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand 31 states. [2019-11-20 04:36:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:32,536 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2019-11-20 04:36:32,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 04:36:32,537 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2019-11-20 04:36:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:32,537 INFO L225 Difference]: With dead ends: 146 [2019-11-20 04:36:32,537 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 04:36:32,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 04:36:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 04:36:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-20 04:36:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 04:36:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-11-20 04:36:32,542 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 72 [2019-11-20 04:36:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:32,543 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2019-11-20 04:36:32,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-20 04:36:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2019-11-20 04:36:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-20 04:36:32,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:32,544 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:32,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:32,749 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:32,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1901444050, now seen corresponding path program 1 times [2019-11-20 04:36:32,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:32,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1796992920] [2019-11-20 04:36:32,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:32,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:36:32,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:33,052 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:33,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1796992920] [2019-11-20 04:36:33,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:33,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-20 04:36:33,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279344169] [2019-11-20 04:36:33,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 04:36:33,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:33,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:36:33,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:36:33,180 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-11-20 04:36:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:33,263 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2019-11-20 04:36:33,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:36:33,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2019-11-20 04:36:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:33,264 INFO L225 Difference]: With dead ends: 149 [2019-11-20 04:36:33,265 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 04:36:33,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 04:36:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-20 04:36:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 04:36:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2019-11-20 04:36:33,269 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 81 [2019-11-20 04:36:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:33,269 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2019-11-20 04:36:33,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 04:36:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2019-11-20 04:36:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-20 04:36:33,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:33,271 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:33,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:33,474 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -740529639, now seen corresponding path program 1 times [2019-11-20 04:36:33,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:33,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1707512595] [2019-11-20 04:36:33,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:33,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-20 04:36:33,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:33,962 INFO L377 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 [2019-11-20 04:36:33,962 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:33,969 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:33,970 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:33,970 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:34,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:34,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1707512595] [2019-11-20 04:36:34,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:34,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 14] imperfect sequences [] total 19 [2019-11-20 04:36:34,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093317230] [2019-11-20 04:36:34,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 04:36:34,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 04:36:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-11-20 04:36:34,696 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 20 states. [2019-11-20 04:36:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:36,092 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2019-11-20 04:36:36,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 04:36:36,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2019-11-20 04:36:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:36,094 INFO L225 Difference]: With dead ends: 160 [2019-11-20 04:36:36,094 INFO L226 Difference]: Without dead ends: 160 [2019-11-20 04:36:36,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 163 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2019-11-20 04:36:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-20 04:36:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2019-11-20 04:36:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 04:36:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2019-11-20 04:36:36,099 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 94 [2019-11-20 04:36:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:36,099 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2019-11-20 04:36:36,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 04:36:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2019-11-20 04:36:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-20 04:36:36,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:36,101 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:36,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:36,301 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash -740529638, now seen corresponding path program 1 times [2019-11-20 04:36:36,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:36,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1639675575] [2019-11-20 04:36:36,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:36,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-20 04:36:36,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:36,776 INFO L377 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 [2019-11-20 04:36:36,776 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:36,781 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:36,781 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:36,781 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:37,465 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:39,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1639675575] [2019-11-20 04:36:39,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:39,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 16] imperfect sequences [] total 34 [2019-11-20 04:36:39,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101353399] [2019-11-20 04:36:39,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-20 04:36:39,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-20 04:36:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 04:36:39,357 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 35 states. [2019-11-20 04:36:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:42,940 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2019-11-20 04:36:42,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 04:36:42,942 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 94 [2019-11-20 04:36:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:42,943 INFO L225 Difference]: With dead ends: 142 [2019-11-20 04:36:42,943 INFO L226 Difference]: Without dead ends: 142 [2019-11-20 04:36:42,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 04:36:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-20 04:36:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-11-20 04:36:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-20 04:36:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2019-11-20 04:36:42,947 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 94 [2019-11-20 04:36:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:42,948 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2019-11-20 04:36:42,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-20 04:36:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2019-11-20 04:36:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-20 04:36:42,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:42,949 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:43,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:43,155 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:43,155 INFO L82 PathProgramCache]: Analyzing trace with hash -169646863, now seen corresponding path program 1 times [2019-11-20 04:36:43,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:43,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [807954757] [2019-11-20 04:36:43,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:43,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:36:43,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:43,450 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:43,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807954757] [2019-11-20 04:36:43,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:43,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2019-11-20 04:36:43,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901362549] [2019-11-20 04:36:43,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 04:36:43,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:36:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:36:43,658 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 11 states. [2019-11-20 04:36:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:43,720 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2019-11-20 04:36:43,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:36:43,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2019-11-20 04:36:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:43,721 INFO L225 Difference]: With dead ends: 144 [2019-11-20 04:36:43,721 INFO L226 Difference]: Without dead ends: 142 [2019-11-20 04:36:43,722 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:36:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-20 04:36:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-11-20 04:36:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-20 04:36:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2019-11-20 04:36:43,725 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 92 [2019-11-20 04:36:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:43,726 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2019-11-20 04:36:43,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 04:36:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2019-11-20 04:36:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-20 04:36:43,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:43,727 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:43,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:43,928 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1265531061, now seen corresponding path program 1 times [2019-11-20 04:36:43,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:43,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [20398165] [2019-11-20 04:36:43,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:44,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-20 04:36:44,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:44,461 INFO L377 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 [2019-11-20 04:36:44,461 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:44,463 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:44,463 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:44,463 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:36:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:44,963 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:45,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [20398165] [2019-11-20 04:36:45,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:45,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 18] imperfect sequences [] total 23 [2019-11-20 04:36:45,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970385014] [2019-11-20 04:36:45,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 04:36:45,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:45,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 04:36:45,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2019-11-20 04:36:45,354 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 24 states. [2019-11-20 04:36:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:47,178 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2019-11-20 04:36:47,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-20 04:36:47,178 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 107 [2019-11-20 04:36:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:47,179 INFO L225 Difference]: With dead ends: 152 [2019-11-20 04:36:47,180 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 04:36:47,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 181 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-20 04:36:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 04:36:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2019-11-20 04:36:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-20 04:36:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2019-11-20 04:36:47,187 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 107 [2019-11-20 04:36:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:47,187 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2019-11-20 04:36:47,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 04:36:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2019-11-20 04:36:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-20 04:36:47,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:47,188 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:47,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:47,393 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:47,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1265531062, now seen corresponding path program 1 times [2019-11-20 04:36:47,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:47,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1582190956] [2019-11-20 04:36:47,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:47,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-20 04:36:47,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:47,928 INFO L377 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 [2019-11-20 04:36:47,928 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:36:47,935 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:36:47,935 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:36:47,935 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:36:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:48,957 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:51,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582190956] [2019-11-20 04:36:51,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:51,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 20] imperfect sequences [] total 42 [2019-11-20 04:36:51,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716658843] [2019-11-20 04:36:51,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-20 04:36:51,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-20 04:36:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2019-11-20 04:36:51,523 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 43 states. [2019-11-20 04:36:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:56,518 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2019-11-20 04:36:56,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 04:36:56,519 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 107 [2019-11-20 04:36:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:56,520 INFO L225 Difference]: With dead ends: 138 [2019-11-20 04:36:56,520 INFO L226 Difference]: Without dead ends: 138 [2019-11-20 04:36:56,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2019-11-20 04:36:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-20 04:36:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-11-20 04:36:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-20 04:36:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2019-11-20 04:36:56,524 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 107 [2019-11-20 04:36:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:56,524 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2019-11-20 04:36:56,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-20 04:36:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2019-11-20 04:36:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-20 04:36:56,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:56,525 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:56,725 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:56,725 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:36:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash 213159298, now seen corresponding path program 1 times [2019-11-20 04:36:56,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:36:56,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1728938667] [2019-11-20 04:36:56,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:36:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:57,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 04:36:57,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:57,851 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:36:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-20 04:36:58,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728938667] [2019-11-20 04:36:58,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:58,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 38 [2019-11-20 04:36:58,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302691487] [2019-11-20 04:36:58,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-20 04:36:58,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:36:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-20 04:36:58,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 04:36:58,552 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 39 states. [2019-11-20 04:37:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:37:00,353 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2019-11-20 04:37:00,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 04:37:00,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2019-11-20 04:37:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:37:00,354 INFO L225 Difference]: With dead ends: 137 [2019-11-20 04:37:00,354 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 04:37:00,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 04:37:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 04:37:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-11-20 04:37:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-20 04:37:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2019-11-20 04:37:00,359 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 110 [2019-11-20 04:37:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:37:00,359 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2019-11-20 04:37:00,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-20 04:37:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2019-11-20 04:37:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-20 04:37:00,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:37:00,360 INFO L410 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:37:00,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:37:00,561 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ldv_list_addErr0REQUIRES_VIOLATION, ldv_kobject_createErr1REQUIRES_VIOLATION, ldv_kobject_createErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr4REQUIRES_VIOLATION, ldv_destroy_msgsErr3REQUIRES_VIOLATION, ldv_destroy_msgsErr2REQUIRES_VIOLATION, ldv_destroy_msgsErr1REQUIRES_VIOLATION, ldv_destroy_msgsErr0REQUIRES_VIOLATION, ldv_destroy_msgsErr5REQUIRES_VIOLATION, ldv_msg_fillErr1REQUIRES_VIOLATION, ldv_msg_fillErr5REQUIRES_VIOLATION, ldv_msg_fillErr0REQUIRES_VIOLATION, ldv_msg_fillErr4REQUIRES_VIOLATION, ldv_msg_fillErr2REQUIRES_VIOLATION, ldv_msg_fillErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr1REQUIRES_VIOLATION, ldv_atomic_add_returnErr0REQUIRES_VIOLATION, ldv_atomic_add_returnErr3REQUIRES_VIOLATION, ldv_atomic_add_returnErr2REQUIRES_VIOLATION, __ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_delErr1REQUIRES_VIOLATION, __ldv_list_delErr2REQUIRES_VIOLATION, __ldv_list_delErr3REQUIRES_VIOLATION, ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr1REQUIRES_VIOLATION, ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_kobject_cleanupErr0REQUIRES_VIOLATION, ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr1REQUIRES_VIOLATION, ldv_msg_freeErr0REQUIRES_VIOLATION, ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE, ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION, ldv_list_delErr2REQUIRES_VIOLATION, ldv_list_delErr1REQUIRES_VIOLATION, ldv_list_delErr3REQUIRES_VIOLATION, ldv_list_delErr0REQUIRES_VIOLATION, __ldv_list_addErr5REQUIRES_VIOLATION, __ldv_list_addErr0REQUIRES_VIOLATION, __ldv_list_addErr1REQUIRES_VIOLATION, __ldv_list_addErr6REQUIRES_VIOLATION, __ldv_list_addErr7REQUIRES_VIOLATION, __ldv_list_addErr2REQUIRES_VIOLATION, __ldv_list_addErr3REQUIRES_VIOLATION, __ldv_list_addErr4REQUIRES_VIOLATION, ldv_dev_set_drvdataErr0REQUIRES_VIOLATION, ldv_dev_set_drvdataErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr1REQUIRES_VIOLATION, ldv_atomic_sub_returnErr0REQUIRES_VIOLATION, ldv_atomic_sub_returnErr3REQUIRES_VIOLATION, ldv_atomic_sub_returnErr2REQUIRES_VIOLATION, ldv_list_add_tailErr0REQUIRES_VIOLATION, ldv_list_add_tailErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr1REQUIRES_VIOLATION, ldv_dev_get_drvdataErr0REQUIRES_VIOLATION, ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION]=== [2019-11-20 04:37:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:37:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2027673159, now seen corresponding path program 1 times [2019-11-20 04:37:00,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:37:00,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [702795415] [2019-11-20 04:37:00,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e3c4925-3fbb-4c3c-b070-d619d3981213/bin/uautomizer/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:37:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:37:01,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 132 conjunts are in the unsatisfiable core [2019-11-20 04:37:01,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:37:01,281 INFO L377 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 16 treesize of output 12 [2019-11-20 04:37:01,281 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,289 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:37:01,289 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,289 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-11-20 04:37:01,334 INFO L343 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2019-11-20 04:37:01,334 INFO L377 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 29 treesize of output 28 [2019-11-20 04:37:01,334 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,346 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:37:01,347 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,347 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-20 04:37:01,412 INFO L343 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2019-11-20 04:37:01,412 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2019-11-20 04:37:01,413 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,426 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:37:01,426 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,426 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-11-20 04:37:01,579 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-11-20 04:37:01,579 INFO L343 Elim1Store]: treesize reduction 32, result has 77.5 percent of original size [2019-11-20 04:37:01,580 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 137 [2019-11-20 04:37:01,580 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,644 INFO L567 ElimStorePlain]: treesize reduction 84, result has 35.9 percent of original size [2019-11-20 04:37:01,645 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:01,645 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2019-11-20 04:37:38,261 WARN L191 SmtUtils]: Spent 36.56 s on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-11-20 04:37:38,261 INFO L343 Elim1Store]: treesize reduction 65, result has 70.7 percent of original size [2019-11-20 04:37:38,262 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 189 [2019-11-20 04:37:38,262 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:40,384 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2019-11-20 04:37:40,385 INFO L567 ElimStorePlain]: treesize reduction 148, result has 28.5 percent of original size [2019-11-20 04:37:40,385 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:40,385 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-11-20 04:37:40,553 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 28 [2019-11-20 04:37:40,553 INFO L343 Elim1Store]: treesize reduction 246, result has 15.2 percent of original size [2019-11-20 04:37:40,553 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 80 [2019-11-20 04:37:40,554 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:40,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:37:40,582 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:40,582 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2019-11-20 04:37:41,302 WARN L191 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2019-11-20 04:37:41,303 INFO L343 Elim1Store]: treesize reduction 170, result has 57.2 percent of original size [2019-11-20 04:37:41,303 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 269 [2019-11-20 04:37:41,304 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:37:43,495 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-11-20 04:37:43,495 INFO L567 ElimStorePlain]: treesize reduction 174, result has 32.0 percent of original size [2019-11-20 04:37:43,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:37:43,496 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2019-11-20 04:38:57,439 WARN L191 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 163 DAG size of output: 98 [2019-11-20 04:38:57,440 INFO L343 Elim1Store]: treesize reduction 203, result has 60.7 percent of original size [2019-11-20 04:38:57,440 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 360 [2019-11-20 04:38:57,441 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:38:59,674 WARN L191 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2019-11-20 04:38:59,675 INFO L567 ElimStorePlain]: treesize reduction 304, result has 23.2 percent of original size [2019-11-20 04:38:59,675 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:38:59,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:92 [2019-11-20 04:41:27,044 WARN L191 SmtUtils]: Spent 2.45 m on a formula simplification. DAG size of input: 201 DAG size of output: 127 [2019-11-20 04:41:27,044 INFO L343 Elim1Store]: treesize reduction 250, result has 61.5 percent of original size [2019-11-20 04:41:27,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 451 [2019-11-20 04:41:27,046 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:41:27,272 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2019-11-20 04:41:27,272 INFO L567 ElimStorePlain]: treesize reduction 304, result has 25.5 percent of original size [2019-11-20 04:41:27,273 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:41:27,273 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:108, output treesize:104 [2019-11-20 04:44:33,080 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 04:44:33,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:44:33,281 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:182) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 55 more [2019-11-20 04:44:33,285 INFO L168 Benchmark]: Toolchain (without parser) took 515788.49 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 472.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 311.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:44:33,285 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:44:33,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -133.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:44:33,286 INFO L168 Benchmark]: Boogie Preprocessor took 84.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:44:33,286 INFO L168 Benchmark]: RCFGBuilder took 1381.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 962.4 MB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:44:33,286 INFO L168 Benchmark]: TraceAbstraction took 513496.43 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 354.9 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -137.4 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:44:33,288 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 822.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -133.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1381.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 962.4 MB in the end (delta: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 513496.43 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 354.9 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -137.4 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...